CN207184436U - Kiloampere heavy current pulse signal generation device and DIDT test equipments - Google Patents
Kiloampere heavy current pulse signal generation device and DIDT test equipments Download PDFInfo
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- CN207184436U CN207184436U CN201720485167.0U CN201720485167U CN207184436U CN 207184436 U CN207184436 U CN 207184436U CN 201720485167 U CN201720485167 U CN 201720485167U CN 207184436 U CN207184436 U CN 207184436U
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Abstract
The utility model discloses a kind of kiloampere heavy current pulse signal generation device and DIDT test equipments, kiloampere heavy current pulse signal generation device includes high voltage power supply, high-voltage capacitance group module, square-wave signal and module, drive module and IGBT occurs, the input of high voltage power supply is used for incoming transport power supply, the cathode power supply end of high voltage power supply is connected with the electrode input end of high-voltage capacitance group module, the negative electricity source of high voltage power supply is connected with the negative input of high-voltage capacitance group module, and the cathode output end of high-voltage capacitance group module and IGBT colelctor electrode connect；The cathode output end of high-voltage capacitance group module and IGBT emitter stage connect；The input of module occurs for square-wave signal output end and drive module connects；The output end of drive module and IGBT gate pole connect.The utility model realizes the standard block output of pulse signal of highest kilo-ampere level, to match the rated current of test product, truly reflects test product dynamic response data.
Description
Technical field
Test equipment technical field is the utility model is related to, more particularly to a kind of kiloampere heavy current pulse signal produces dress
Put and DIDT test equipments.
Background technology
From hundred peaces to the high current fast dynamic response test device of kilo-ampere level, current or blank, particularly in Hall
Sensor field, substantially without the application of this respect.
Such as：The di/di tests of Hall current sensor are an important technical indicators in Hall current sensor, often
The rated current for advising Hall current sensor is mostly 50A to 2000A, existing pulsed power signal power generator
Only 1A or so, the method for measuring its response time is usually the method in its measurement end winding multiturn, to test suddenly
The di/dt characteristics of your current sensor.
But the pulse current amplitude that this test mode is provided is small, p-wire is long, and accumulation inductance is larger, it is impossible to
Truly, the raising and lowering waveform of sensor is accurately reflected, measured waveform and data error are larger.The reality of product can not be met
Border needs.Greatly influence test product performance.
Utility model content
Main purpose of the present utility model is to propose a kind of kiloampere heavy current pulse signal generation device and DIDT test
Equipment, it is intended to hundred peace levels are realized to the high current standard block output of pulse signal of kilo-ampere level, to match the specified of test product
Electric current, truly reflect test product dynamic response data.
To achieve the above object, the utility model proposes a kind of kiloampere heavy current pulse signal generation device, application
In the test of product dynamic and DIDT tests, the kiloampere heavy current pulse signal generation device includes high voltage power supply, high pressure
Module, drive module and IGBT occur for capacitance group module, square-wave signal, and the input of the high voltage power supply is used for incoming transport electricity
Source, the cathode power supply end of the high voltage power supply are connected with the electrode input end of the high-voltage capacitance group module, the high voltage power supply
Negative electricity source be connected with the negative input of the high-voltage capacitance group module, the output of the positive pole of the high-voltage capacitance group module
End is connected with the colelctor electrode of the IGBT；The cathode output end of the high-voltage capacitance group module connects with the emitter stage of the IGBT
Connect；The output end that module occurs for the square-wave signal is connected with the input of the drive module；The output of the drive module
End is connected with the gate pole of the IGBT；Wherein,
The high-voltage capacitance group module, for saving the electric energy of the high voltage power supply offer and exporting high-power constant electricity
Stream；
Module occurs for the square-wave signal, for producing square-wave signal；
The drive module, for when receiving the square-wave signal, producing drive signal；
The IGBT, for carrying out high power switch driving according to the drive signal, by the high-voltage capacitance group mould
High-power electricity energy storage is converted to quickly high-power constant current output in block.
Preferably, the kiloampere heavy current pulse signal generation device also includes capacitive load resistive module, the appearance
Property load resistance block coupled in series is connected between the high-voltage capacitance group module and the colelctor electrode of the IGBT.
Preferably, the kiloampere heavy current pulse signal generation device also includes test fixture, the test fixture string
Connection is arranged between the capacitive load resistive module and the colelctor electrode of the IGBT.
Preferably, the kiloampere heavy current pulse signal generation device also includes being used to control the square-wave signal to occur
The control module of module work, the controlled end that module occurs with the square-wave signal for the output end of the control module are connected.
Preferably, the square-wave signal occur module include the first triode, first switch, first resistor, second resistance,
3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the tenth
One resistance, the 12nd resistance, the first trigger, the second trigger, the 3rd trigger, the 4th trigger, the 5th trigger, the 6th
Trigger, the first electric capacity, the second electric capacity, the first diode, the second diode, the 3rd diode, the first potentiometer, the second current potential
Device, the 3rd potentiometer and optical-electrical converter, the optical-electrical converter include transmitting element and receiving unit；The first switch
First end is connected with the first end of the first resistor, the first end of the second end of the first switch and first electric capacity,
The anode interconnection of first stationary contact of first potentiometer, movable contact and the first diode, and be grounded；The first resistor
Second end and the second end of the first end of the second resistance, the input of first trigger and first electric capacity are mutual
Even；Second end of the second resistance is connected with the first DC power supply terminal；The output end of first trigger is through described second
Electric capacity and first end, the second stationary contact of first potentiometer and the input of second trigger of the 3rd resistor
Interconnection, the second end of the 3rd resistor is connected with the negative electrode of first diode；The output end warp of second trigger
4th resistance interconnects with the base stage of first triode and the first end of the 5th resistance；The of 5th resistance
Two ends are grounded, the input of the colelctor electrode of first triode through the 6th resistance and the 3rd trigger, described the
The first end of seven resistance and the interconnection of the first end of the 8th resistance, the grounded emitter of first triode；Described 3rd
The output end of trigger and the 4th trigger, the 5th trigger, the input of the 6th trigger, the anode of the second diode
And the 3rd diode negative electrode interconnection；Second end of the 7th resistance is connected with the first stationary contact of second potentiometer；
Second end of the 8th resistance is connected with the first stationary contact of the 3rd potentiometer；Second stationary contact of second potentiometer
Point interconnects with the negative electrode of movable contact and second diode；Second stationary contact of the 3rd potentiometer and movable contact and described
The anode interconnection of 3rd diode；The output end of 4th trigger, the 5th trigger and the 6th trigger is respectively through described
9th resistance, the tenth resistance and the 11st resistance are connected with the anode of the transmitting element；The minus earth of the transmitting element,
The output end of module occurs for the extremely described square-wave signal of the current collection of the receiving unit, and connects with first DC power supply terminal
Connect, the grounded emitter of the receiving unit.
Preferably, the drive module include IGBT driving optocoupler, the second triode, the 3rd triode, the 12nd resistance,
13rd resistance, the 14th resistance, the 15th resistance, the 16th resistance, the 17th resistance, the 18th resistance, the 4th diode,
5th diode, the 3rd electric capacity and the 4th electric capacity, the IGBT drivings optocoupler include inversion signal triggering pin, public pin, driving
Signal output pin, the output end that module occurs through the 12nd resistance with the square-wave signal for the signal triggering pin are connected,
The first end of the drive signal output pin and the 13rd resistance and the first end of the 14th resistance interconnect, and described the
Second end of 13 resistance and the base stage of the first end of the 3rd electric capacity, the base stage of second triode and the 3rd triode
Interconnection；Second end of the 14th resistance is connected with the second end of the 3rd electric capacity with the second DC power supply terminal；It is described
The colelctor electrode of second triode is connected with the 3rd DC power supply terminal, the emitter stage of second triode and the 3rd triode
The emitter stage gate pole through the 15th resistance and the 16th resistance and the IGBT, the of the 4th electric capacity respectively
The first end of one end and the 17th resistance interconnects, and colelctor electrode and second DC power supply terminal of the 3rd triode connect
Connect；The emitter stage of second end of the 4th electric capacity and the second end of the 17th resistance respectively with the IGBT is connected；The public affairs
End is connected with the anode of the 4th diode altogether, and the negative electrode of the 4th diode is through the 18th resistance and the described 5th
The anode connection of diode；The negative electrode of 5th diode is connected with the anode of the 6th diode, the six or two pole
The negative electrode of pipe is connected with the emitter stage of the IGBT.
Preferably, the kiloampere heavy current pulse signal generation device also includes IGBT protection modules, and the IGBT drives
Dynamic optocoupler also includes voltage detecting pin, fault-signal output pin, and the IGBT protection modules include optocoupler, the 4th triode, the
Five triodes, relay, double diode, the 19th resistance, the 20th resistance, the 21st resistance, the 22nd resistance, second
13 resistance, the 24th resistance, the 5th electric capacity and the 6th electric capacity, the voltage detecting pin are connected with the 18th resistance,
First end of the fault-signal output pin through the 19th resistance and the 20th resistance, the first of the 5th electric capacity
End, the base stage interconnection of the 4th triode；It is second end of the 20th resistance and the second end of the 5th electric capacity, described
The emitter stage of 4th triode and first DC power supply terminal interconnection；The colelctor electrode and the described 20th of 4th triode
The first end of one resistance and the interconnection of the first end of the 22nd resistance；Second end of the 21st resistance and the hair
The anode of unit is sent to connect；Second end of the 22nd resistance and the anode of the optocoupler, the 23rd resistance
First end and the interconnection of the first end of the 6th electric capacity, the negative electrode of the optocoupler, the second end of the 23rd resistance and institute
The second end for stating the 6th electric capacity is grounded；Anode, the relay coil of the colelctor electrode of the optocoupler and the double diode
First end, the 5th triode colelctor electrode and second DC power supply terminal interconnection, the emitter stage of the optocoupler and institute
State the first end of the 24th resistance and the emitter stage of the 5th triode；The negative electrode of the double diode and the relay
Second end of coil is connected with the 3rd DC power supply terminal respectively.
Preferably, the kiloampere heavy current pulse signal generation device also includes DC power supplier, the signal hair
Raw module, which includes the DC power supplier, includes the first dc source modular converter and the second dc source modular converter, described
The input of first dc source modular converter and the second dc source modular converter is used for incoming transport power supply, and described first is straight
The power supply of module occurs with the square-wave signal respectively for stream power transfer module and the output end of the second dc source modular converter
End connection.
Preferably, the first dc source modular converter includes power input, commutation diode, filtration module, the
One decompression chip, the first filter capacitor and the second filter capacitor, the power input is used to be connected with power supply, described whole
The anode of stream diode is is connected with the power input, the input of the negative electrode of the commutation diode and the filtration module
End connection；First output end of the filtration module is connected with the electrode input end of the described first decompression chip, the filtering mould
Second output end of block is connected with the negative input of the described first decompression chip；The cathode output end of the first decompression chip
For first DC power supply terminal, and it is connected with the first end of first filter capacitor and the second filter capacitor, described first
The second end for being depressured the cathode output end and first filter capacitor and the second filter capacitor of chip is grounded.
Preferably, the second dc source modular converter includes the second decompression chip, the 3rd filter capacitor, the 4th filtering
Electric capacity, the 5th filter capacitor, the 25th resistance and voltage-regulator diode, it is described second decompression chip electrode input end with it is described
The first output end connection of filtration module, the negative input of the second decompression chip and the second output of the filtration module
End connection；It is described second decompression chip cathode output end be the 3rd DC power supply terminal, and with the 3rd filter capacitor,
The first end of 4th filter capacitor and the 25th resistance connects, and the cathode output end of the second decompression chip is described
Second DC power supply terminal, and with the 3rd filter capacitor, the second end of the 3rd filter capacitor, the 5th filter capacitor
The anode of one end and the voltage-regulator diode interconnects；Second end of the negative electrode of the voltage-regulator diode and the 5th filter capacitor
Second end of extremely described 25th resistance is grounded.
The utility model also proposes a kind of DIDT test equipments, and the DIDT test equipments include kiloampere as described above
Heavy current pulse signal generation device；The kiloampere heavy current pulse signal generation device includes high voltage power supply, high-voltage capacitance
Module, drive module and IGBT, cathode power supply end and the high-voltage capacitance of the high voltage power supply occur for group module, square-wave signal
The electrode input end connection of group module, the negative pole of the negative electricity source of the high voltage power supply and the high-voltage capacitance group module input
End connection, the cathode output end of the high-voltage capacitance group module are connected with the colelctor electrode of the IGBT；The high-voltage capacitance module
Cathode output end be connected with the emitter stage of the IGBT；The output end of module and the drive module occur for the square-wave signal
Input connection；The output end of the drive module is connected with the gate pole of the IGBT；Wherein, the high-voltage capacitance group mould
Block, for receiving the high voltage power supply and energy storage；Module occurs for the square-wave signal, for producing square-wave signal；The driving
Module, for when receiving the square-wave signal, producing drive signal；The IGBT, for being entered according to the drive signal
Row ON/OFF, the energy storage signal of the high-voltage capacitance group module is converted into output of pulse signal.
The utility model kiloampere heavy current pulse signal generation device is by setting square-wave signal that module occurs to produce
Square-wave signal, and the square-wave signal is exported to drive module, so that drive module driving IGBT works, and according to the drive signal
Switch drive is carried out, and when IGBT is opened, by the energy storage signal output of high-voltage capacitance group module to current loop, and in IGBT
During closure, stop the superposed signal output of the power supply signal of high voltage power supply output and the energy storage signal of the high-voltage capacitance group module
To current loop, so as to which high-power electricity energy storage in the high-voltage capacitance group module is converted into quick high-power constant current
Output, to realize hundred peace levels to the high current standard block output of pulse signal of kilo-ampere level.Kiloampere provided by the utility model
Heavy current pulse signal generation device solves in existing pulse signal generator that pulse current amplitude is small, and p-wire is long,
It is larger to accumulate inductance, it is impossible to raising and lowering waveform that is true, accurately reflecting sensor, measured waveform and data error compared with
Greatly, being actually needed for product can not be met, greatly influence test product performance the problem of.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.
Fig. 1 is that the utility model kiloampere heavy current pulse signal generation device is real applied in DIDT test equipments first
Apply the high-level schematic functional block diagram of example；
Fig. 2 is that the electrical block diagram that module occurs for square-wave signal in module occurs for the square-wave signal shown in Fig. 1；
The electrical block diagram of square-wave signal amplification module in module occurs for the square-wave signal shown in Fig. 1 for Fig. 3；
The electrical block diagram of IGBT protection modules in module occurs for the square-wave signal shown in Fig. 1 for Fig. 4；
The electrical block diagram of reset circuit in module occurs for the square-wave signal shown in Fig. 1 for Fig. 5；
Fig. 6 is first and power-switching circuit and second straight in kiloampere heavy current pulse signal generation device shown in Fig. 1
Flow the structural representation of power transfer module.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction be only used for explain it is relative between each part under a certain particular pose (as shown in drawings)
Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.
If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment
Two " etc. description is only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating meaning
The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one
Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical scheme is conflicting or can not realize
The combination of case is not present, also not within the protection domain of the requires of the utility model.
The utility model proposes a kind of kiloampere heavy current pulse signal generation device, applied in DIDT test equipments.
Reference picture 1, in the embodiment of the utility model one, the kiloampere heavy current pulse signal generation device includes high pressure
Module 30 and drive module 40 occur for power supply 10, high-voltage capacitance group module 20, IGBT, square-wave signal, the high voltage power supply it is defeated
Enter end and be used for incoming transport power supply AC, the cathode power supply end of the high voltage power supply 10 and the positive pole of the high-voltage capacitance group module 20
Input is connected, and the negative electricity source of the high voltage power supply 10 is connected with the negative input of the high-voltage capacitance group module 20,
The cathode output end of the high-voltage capacitance group module 20 is connected with the colelctor electrode of the IGBT；The high-voltage capacitance group module 20
Cathode output end be connected with the emitter stage of the IGBT；The output end of module 30 and the driving mould occur for the square-wave signal
The input connection of block 40；The output end of the drive module 40 is connected with the gate pole of the IGBT；Wherein,
The high-voltage capacitance group module 20, for saving the electric energy of the offer of high voltage power supply 10 and providing high-power constant
Electric current；
Module 30 occurs for the square-wave signal, for producing square-wave signal；
The drive module 40, for when receiving the square-wave signal, producing drive signal；
The IGBT, for carrying out high power switch driving according to the drive signal, by the high-voltage capacitance group mould
The inner high-power electricity energy storage of block 20 is converted to quickly high-power constant current output.
Wherein, high voltage power supply 10 is high-voltage DC power supply, and adjustable between 0-500V, for by the AC power of input
AC is exported after being converted to high-voltage DC power supply.High-voltage capacitance group module 20 carries out electric energy storage in the high-voltage DC power supply to input
It is standby, and constant current is discharged when IGBT is opened, to produce heavy current pulse signal, wherein, high-voltage capacitance group module 20 is by big
The electric capacity composition of the high pressure such as capacity electrolytic electric capacity and the nonpolarity noninductive electric capacity of Large Copacity, Large Copacity, high-voltage capacitance group module 20 are used
In storing electrical energy, ensure there is lasting constant current output in during IGBT is opened.Module 30 occurs for the square-wave signal, for producing
Raw square-wave signal, and the square-wave signal is exported to IGBT, to control IGBT to turn on.IGBT is by upper bridge arm IGBT and lower bridge
Two IGBT compositions of arm IGBT, the quick pass of lower bridge arm IGBT pipes is realized by upper bridge arm IGBT fast reaction diode
Disconnected, lower bridge arm IGBT is used to carry out switch drive according to the square-wave signal, by the 20 inner big work(of high-voltage capacitance group module
Rate electricity energy storage is converted to quickly high-power constant current output, specifically, when IGBT is opened, described in current loop output
The energy storage signal of high-voltage capacitance group module 20, it is now high level equivalent to output, high current constant current signal, and is closed in IGBT
During conjunction, current loop is turned off, and is now low level signal equivalent to output, so, module is occurred by square-wave signal
Square-wave signal caused by 30 is exported to drive module 40, so that under the driving of drive module 40, control IGBT is turned on/off, from
And making IGBT when touching logical by moment, current loop obtains the square-wave pulse signal of a high-power constant current.
The utility model kiloampere heavy current pulse signal generation device is by setting square-wave signal that module 30 occurs to produce
Raw square-wave signal, and export to drive module 40, so that drive module 40 drives IGBT progress high-power according to the square-wave signal
Switch drive.Specifically, when IGBT is opened, by the energy storage signal output of the high-voltage capacitance group module 20 to current loop,
To provide sufficiently large constant current, IGBT is set to establish grid-control electric field rapidly and turn on；When IGBT is closed, stop high pressure
Power supply 10 exports the energy storage signal output of the high-voltage capacitance group module 20 to current loop, so as to by the high-voltage capacitance group mould
High-power electricity energy storage is converted to quickly high-power constant current output in block, to realize hundred peace levels to the high current of kilo-ampere level
Standard block output of pulse signal, so as to match the rated current of test product, truly reflect test product dynamic response
Data.Kiloampere heavy current pulse signal generation device provided by the utility model is solved in existing pulse signal generator
Pulse current amplitude is small, and p-wire is long, and accumulation inductance is larger, it is impossible to raising and lowering that is true, accurately reflecting sensor
Waveform, measured waveform and data error are larger, can not meet being actually needed for product, greatly influence asking for test product performance
Topic.
Reference picture 1, in a preferred embodiment, the kiloampere heavy current pulse signal generation device are also born including capacitive
Resistive module 50 is carried, the capacitive load resistive module 50 is connected in series in the collection of the high-voltage capacitance group module and the IGBT
Between electrode.
In the present embodiment, capacitive load resistive module 50 is used for the voltage swing for adjusting high voltage power supply output, with realization pair
The size of current of current loop is controlled, and then obtains a pulse side matched with tested Hall sensor nominal current magnitude
Ripple.The current amplitude that the utility model realizes pulse signal is adjustable.
Reference picture 1, in a preferred embodiment, the heavy current pulse generation circuit also include test fixture 60, described
Test fixture is arranged in series the input in the cathode power supply end of the high voltage power supply 10 and the IGBT.
In the present embodiment, test fixture 60 detachably electrically connects with Switching Power Supply 10 and IGBT, can be the metal materials such as copper
Metal column made of material, test fixture 60 equivalent to a testboard, such as：In the dynamic response time of test Hall sensor
When, the home position by single turn conducting 50 through tested Hall sensor through hole, and by the output of pulse signal of high current extremely
The one-shot measurement end of tested Hall sensor, so as to improve the measuring accuracy of dynamic response time.Additionally, due to the present embodiment
Hall sensor is measured using the mode of test fixture, due to without artificial coiling, being tested so as to reduce
Workload, improve testing efficiency.
Referring to figs. 1 to Fig. 6, in a preferred embodiment, the square-wave signal occurs square-wave signal described in module 30 and occurred
Module 30 includes the first triode Q1, first switch S1, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance
R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st
Resistance R11, the 12nd resistance R12, the first trigger U1A, the second trigger U1B, the 3rd trigger U1C, the 4th trigger
U1D, the 5th trigger U1E, the 6th trigger U1F, the first electric capacity C1, the second electric capacity C2, the first diode D1, the second diode
D2, the 3rd diode D3, the first potentiometer W1, the second potentiometer W2, the 3rd potentiometer W3 and optical-electrical converter 411, the light
Electric transducer 411 includes transmitting element T2521Z and receiving unit R2521Z；The first end of the first switch S1 and described the
One resistance R1 first end connection, the second end of the first switch S1 and the first electric capacity C1 first end, described first
The anode interconnection of potentiometer W1 the first stationary contact, movable contact and the first diode D1, and be grounded；The of the first resistor R1
Two ends and the second of the first end of the second resistance R2, the input of the first trigger U1A and the first electric capacity C1
End interconnection；The second end of the second resistance R2 is connected with the second DC power supply terminal VCC2；The output of the first trigger U1A
Hold the first end through the second electric capacity C2 and 3rd resistor R3, the second stationary contact of the first potentiometer W1 and described
Second trigger U1B input interconnection, the second end of the 3rd resistor R3 is connected with the negative electrode of the first diode D1；
Base stage and fiveth electricity of the output end of the second trigger U1B through the 4th resistance R4 and the first triode Q1
Hinder R5 first end interconnection；The second end ground connection of the 5th resistance R5, the colelctor electrode of the first triode Q1 is through described the
Six resistance R6 and the 3rd trigger U1C input, the first end of the 7th resistance R7 and the 8th resistance R8
First end interconnects, the grounded emitter of the first triode Q1；The output end of 3rd trigger and the described 4th triggering
Device U1D, the 5th trigger U1E, the 6th trigger U1F input, the second diode D2 anode and the 3rd diode D3
Negative electrode interconnects；The second end of the 7th resistance R7 is connected with the first stationary contact of the second potentiometer W2；8th electricity
Resistance R8 the second end is connected with the first stationary contact of the 3rd potentiometer W3；The second stationary contact of the second potentiometer W2 with
Movable contact and the second diode D2 negative electrode interconnect；The second stationary contact of the 3rd potentiometer W3 and movable contact and described
3rd diode D3 anode interconnection；4th trigger U1D, the 5th trigger U1E and the 6th trigger U1F output end are distinguished
It is connected through the 9th resistance R9, the tenth resistance R10 and the 11st resistance R11 with the anode of the transmitting element T2521Z；Institute
Transmitting element T2521Z minus earth is stated, module 30 occurs for the extremely described square-wave signal of current collection of the receiving unit R2521Z
Output end, and be connected with the second DC power supply terminal VCC2, the grounded emitter of the receiving unit R2521Z.
In the present embodiment, the first electric capacity C1 is used to filter out the clutter in power supply, and the second electric capacity C2 is used to touch first
Square-wave signal caused by hair device U1A is coupled to the second trigger U1B.Trigger U1A, U1B, U1C, U1D, U1E, U1F be used for into
Row low and high level is changed, and to produce square-wave signal, and improves the driving force to IGBT, trigger U1A, U1B, U1C, U1D,
U1E, U1F are integrated in same integrated chip, and such as 74HC14 type Schmidt triggers, module PCB occurs to reduce square-wave signal
The volume of plate and the power consumption and production cost for reducing circuit itself.First potentiometer W1 is used to correct square-wave signal, the 4th electricity
Hinder R4 and the 5th resistance R5 and connect partial pressure to adjust the first triode Q1 conducting degree, so as to adjust the amplitude of square-wave signal,
Second potentiometer W2 and the 3rd potentiometer W3 is used for the dutycycle for adjusting square-wave signal.When first switch S1 is closed, trigger
U1A, U1B, U1C, U1D, U1E, U1F can produce the square-wave signal of moment low-voltage so that the transmission in optical-electrical converter 411
Unit T2521Z is turned on, and the receiving unit R2521Z conductings in optical-electrical converter 411 are triggered by opto-electronic conversion effect, so as to
Export square-wave signal.
Further, module 30, which occurs, for square-wave signal also includes toggle switch J3, electric capacity C41, and toggle switch J3 is in parallel
The 5th resistance R5 both ends are arranged at, for controlling the square-wave signal of output continuous impulse/pulse, electric capacity C41 is arranged in series
Between 3rd trigger U1C input and ground, for filtering out the clutter in square-wave signal.
Referring to figs. 1 to Fig. 6, in a preferred embodiment, the drive module 40 includes IGBT driving optocouplers IC1, second
Triode Q2, the 3rd triode Q3, the 12nd resistance R12A, the 13rd resistance R13, the 14th resistance R14, the 15th resistance
R15, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, the 4th diode D4, the 5th diode D5, the 3rd
Electric capacity C3 and the 4th electric capacity C4, the IGBT driving optocouplers IC1 include inversion signal triggering pin, public pin, drive signal output
Pin, the output end that module 30 occurs through the 12nd resistance R12A with the square-wave signal for the signal triggering pin are connected, institute
State the first end of drive signal output pin and the 13rd resistance R13 and the first end interconnection of the 14th resistance R14, institute
State the 13rd resistance R13 the second end and the 3rd electric capacity C3 first end, the base stage and the described 3rd of the second triode Q2
Triode Q3 base stage interconnection；The second end of the 14th resistance R14 and the second end of the 3rd electric capacity C3 are with second
DC power supply terminal VCC2 connections；The colelctor electrode of the second triode Q2 is connected with the 3rd DC power supply terminal VCC3, and described second
Triode Q2 emitter stage and the 3rd triode Q3 emitter stage are respectively through the 15th resistance R15 and the described 16th
The first end of resistance R16 and IGBT gate pole, the first end of the 4th electric capacity C4 and the 17th resistance R17 is mutual
Even, the colelctor electrode of the 3rd triode Q3 is connected with the second DC power supply terminal VCC2；The second of the 4th electric capacity C4
The emitter stage of end and the 17th resistance R17 the second end respectively with the IGBT is connected；The common port and the four or two pole
Pipe D4 anode connection, the negative electrode of the 4th diode D4 is through the 18th resistance R18's and the 5th diode D5
Anode connects；The negative electrode of the 5th diode D5 is connected with the anode of the 6th diode D6, the 6th diode D6
Negative electrode be connected with the colelctor electrode of the IGBT.
In the present embodiment, diode D4, D5 and D6 are used for the reverse pressure voltage for improving IGBT driving optocouplers IC1.IGBT drives
Dynamic optocoupler IC1 preferably uses A316J type optocouplers, and IGBT driving optocouplers IC1 also includes triggering pin without phase signals, and no phase signals are touched
Hair pin is connected through resistance R12C with the first DC power supply terminal VCC1, to pull up the voltage that pin is triggered without phase signals, is so as to input
High level.Square-wave signal amplification module 42 also includes resistance 12B, resistance 12B be arranged in series in the first DC power supply terminal VCC1 with
Between inversion signal triggering pin, when receiving unit R2521Z is turned on, and exports low level square-wave signal, square-wave signal is through electricity
Output to inversion signal triggers pin after hindering R12A, R12B series connection partial pressure, and then by defeated through drive signal after optocoupler signal isolation
Go out pin and export base stage to the second triode Q2 and the 3rd triode Q3, so as to drive the second triode Q2 and the 3rd triode Q3
Turn in turn, when square-wave signal is high level, the second triode Q2 conductings, the 3rd triode Q3 is in cut-off state, and then
IGBT conductings are driven, the heavy current pulse square wave for high level of now IGBT outputs.When square-wave signal is low level, the
Three triode Q3 are turned on, and the second triode Q2 be in cut-off state, and then drive IGBT cut-offs, now IGBT export for low electricity
Flat heavy current pulse square wave, and then export the heavy current pulse square wave of high/low level translation.
Referring to figs. 1 to Fig. 6, further, in above-described embodiment, the kiloampere heavy current pulse signal generation device is also
Including IGBT protection modules 41, the IGBT driving optocouplers IC1 also includes voltage detecting pin, fault-signal output pin, described
IGBT protection modules 41 include optocoupler U1, the 4th triode Q4, the 5th triode Q5, relay JZ, double diode the 431, the tenth
Nine resistance R19, the 20th resistance R20, the 21st resistance R21, the 22nd resistance R22, the 23rd resistance R23, second
14 resistance R24, the 5th electric capacity C5 and the 6th electric capacity C6, the voltage detecting pin is connected with the 18th resistance R18, described
First end of the fault-signal output pin through the 19th resistance R19 and the 20th resistance R20, the 5th electric capacity C5
First end, the base stage of the 4th triode Q4 interconnection；The second end of the 20th resistance R20 and the 5th electric capacity C5
The second end, the 4th triode Q4 emitter stage and the first DC power supply terminal VCC1 interconnection；4th triode
Q4 colelctor electrode interconnects with the first end of the 21st resistance R21 and the first end of the 22nd resistance R22；It is described
21st resistance R21 the second end is connected with the anode of the transmitting element T2521Z；The of the 22nd resistance R22
Two ends and the first end of the anode of the optocoupler U1, the first end of the 23rd resistance R23 and the 6th electric capacity C6 are mutual
Even, the second end of the negative electrode of the optocoupler U1, the second end of the 23rd resistance R23 and the 6th electric capacity C6 connects
Ground；The anode of the colelctor electrode of the optocoupler U1 and the double diode 431, the first end of the relay JZ coils, described the
Five triode Q5 colelctor electrode and the second DC power supply terminal VCC2 interconnection, the emitter stage of the optocoupler U1 and the described 20th
The emitter stage of four resistance R24 first end and the 5th triode Q5；The negative electrode of the double diode 431 and the relay
Second end of JZ coils is connected with the 3rd DC power supply terminal VCC3 respectively.
Voltage detecting pin DESAT is when detecting that the voltage between IGBT colelctor electrodes and emitter stage is more than preset value, typically
The preset value is 7V, then the signal of fault-signal output pin output is redirected as low level by high level so that the 19th resistance R19
The 4th triode Q4 conductings are triggered with after the 20th resistance R20 series connection partial pressures, to trigger optocoupler U1 conductings, and then trigger the 5th
Triode Q5 is turned on, after the 5th triode Q5 conductings so that electric adhesive on relay JZ, and realize the second DC power supply terminal
After VCC2 and the 3rd DC power supply terminal VCC3 short circuits, the second triode Q2 and the 3rd triode Q3 cut-offs are triggered, and then control
IGBT is stopped, to avoid IGBT from damaging.Simultaneously after the 4th triode Q4 conductings, the rear transmission triggered in optical-electrical converter
Unit T2521Z ends, so as to stop exporting square-wave signal IGBT driving optocoupler IC1, so as to which IGBT can also be controlled to stop work
Make, to avoid IGBT from damaging.
In the present embodiment, drive module 40 also includes reset circuit 42, and reset circuit 42 includes reset switch S2, resistance
R41, R42 and diode D41, electric capacity C41, C42, IGBT drivings optocoupler IC1 also include resetting pin, and the first of reset switch S2
End drives optocoupler IC1 resetting pin be connected through resistance R41 and IGBT, and the second end of reset switch is grounded, resistance R42 one end and
Second DC power supply terminal VCC2 connections, one end are connected with IGBT driving optocouplers IC1 resetting pin, C42 points of electric capacity C41 and electric capacity
It is not arranged in series between resetting pin and ground, when reset switch closes, resistance R41, R42 series connection partial pressure, letter is resetted with output
Number to resetting pin, to realize IGBT driving optocouplers IC1 chip reset.
Referring to figs. 1 to Fig. 6, based on above-described embodiment, kiloampere heavy current pulse signal generation device still further comprises
DC power supplier 70, the signal generating module, which includes the DC power supplier 70, includes the first dc source modular converter
71 and the second dc source modular converter 72, the first dc source modular converter 71 and the second dc source modular converter 72
Input be used for incoming transport power supply, the first dc source modular converter 71 and the second dc source modular converter 72
The power end that module 30 occurs with the square-wave signal respectively for output end is connected.
In the present embodiment, DC power supplier 70 is used to the AC power of input being converted into defeated after suitable dc source
Go out to square-wave signal and module 30 occurs, worked so that module 30 occurs for square-wave signal.
Wherein, the first dc source modular converter 71 includes power input Vin, commutation diode D61, filtering
Module 61, first is depressured chip U61, the first filter capacitor C61 and the second filter capacitor C62, the power input be used for
Power supply connects, and the anode of the commutation diode D61 is is connected with the power input Vin, the commutation diode
D61 negative electrode is connected with the input of the filtration module 61；First output end of the filtration module 711 and the described first drop
Chip U61 electrode input end connection is pressed, the second output end of the filtration module 711 is with the described first decompression chip U61's
Negative input connects；The cathode output end of the first decompression chip U61 is second dc source
VCC2 is held, and is connected with the first filter capacitor C61 and the second filter capacitor C62 first end, described first
Second end of decompression chip U61 cathode output end and the first filter capacitor C61 and the second filter capacitor C62 is grounded.
In the present embodiment, power supply preferably uses 24V dc source, and filtration module 61 is used to filter out in dc source
Clutter, to improve the electromagnetism antijamming capability of kiloampere heavy current pulse signal generation device itself, and avoid kiloampere
Heavy current pulse signal generation device pair or Hall sensor produce interference.The supply voltage rectified two of power supply output
Supply voltage is converted to conjunction by output to the first decompression chip U61 after pole pipe D61, the first filter capacitor C61 rectifications and filtering
The first suitable dc source, such as exported after 24V is converted into 5V to the second DC power supply terminal VCC2, and through the second dc source
Hold VCC2 outputs.
Referring to figs. 1 to Fig. 6, further, the kiloampere heavy current pulse signal generation device also includes the second direct current
Power transfer module 72, the second dc source modular converter 72 include the second decompression chip U71, the 3rd filter capacitor
C63, the 4th filter capacitor C64, the 5th filter capacitor C65, the 25th resistance R25 and voltage-regulator diode Z1, second drop
Pressure chip U71 electrode input end is connected with the first output end of the filtration module 61, and the second decompression chip U71's is negative
Pole input is connected with the second output end of the filtration module 61；The cathode output end of the second decompression chip U71 is institute
State the 3rd DC power supply terminal VCC3, and with the 3rd filter capacitor C63, the 4th filter capacitor C64 and the 25th electricity
R25 first end connection is hindered, the cathode output end of the second decompression chip U71 is the second DC power supply terminal VCC2, and
With the 3rd filter capacitor C63, the 3rd filter capacitor C63 the second end, the first end of the 5th filter capacitor C65 and institute
State voltage-regulator diode Z1 anode interconnection；Second end of the negative electrode of the voltage-regulator diode Z1 and the 5th filter capacitor C65
Extremely described 25th resistance R25 the second end is grounded.
In the present embodiment, the rectified diode D61 of supply voltage of power supply output, the first filter capacitor C61 rectifications
And supply voltage to the second decompression chip U71, is converted to suitable second dc source and the 3rd direct current by output after filtering
Power supply, such as 24V is converted into+15V and -9V, after export respectively to the 3rd DC power supply terminal VCC3 and the second DC power supply terminal
VCC2, and through the 3rd DC power supply terminal VCC3 and the second DC power supply terminal VCC2.
Referring to figs. 1 to Fig. 6, in a preferred embodiment, the kiloampere heavy current pulse signal generation device also includes
For controlling the square-wave signal that the control module 80 that module 30 works, output end and the side of the control module 80 occurs
The controlled end connection of ripple signal generating module 30.
In the present embodiment, control module 80 is used for output control signal, to control square wave signal generating module 30 to work,
In the present embodiment, control module 80 can be controlling switch or main control chip, not be limited herein.
The utility model also proposes a kind of DIDT test equipments, and the DIDT test equipments include kiloampere as described above
Heavy current pulse signal generation device.The detailed construction of the kiloampere heavy current pulse signal generation device can refer to above-mentioned implementation
Example, here is omitted；It is understood that due to having used above-mentioned kiloampere big in the utility model DIDT test equipments
Current pulse signal generation device, therefore, the embodiment of the utility model DIDT test equipments include above-mentioned kiloampere high current
Whole technical schemes of pulse signal generation device whole embodiments, and the technique effect reached is also identical, herein not
Repeat again.
Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model,
Every equivalent structure under utility model of the present utility model design, made using the utility model specification and accompanying drawing content
Conversion, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of kiloampere heavy current pulse signal generation device, applied in DIDT test equipments, it is characterised in that described thousand
Ampere heavy current pulse signal generation device includes high voltage power supply, high-voltage capacitance group module, square-wave signal and module, driving mould occurs
Block and IGBT, the input of the high voltage power supply are used for incoming transport power supply, the cathode power supply end of the high voltage power supply with it is described
The electrode input end connection of high-voltage capacitance group module, the negative electricity source of the high voltage power supply and the high-voltage capacitance group module
Negative input is connected, and the cathode output end of the high-voltage capacitance group module is connected with the colelctor electrode of the IGBT；The high pressure
The cathode output end of capacitance group module is connected with the emitter stage of the IGBT；Output end and the institute of module occur for the square-wave signal
State the input connection of drive module；The output end of the drive module is connected with the gate pole of the IGBT；Wherein,
The high-voltage capacitance group module, for saving the electric energy of the high voltage power supply offer and providing high-power constant current；
Module occurs for the square-wave signal, for producing square-wave signal；
The drive module, for when receiving the square-wave signal, producing drive signal；
The IGBT, for carrying out high power switch driving according to the drive signal, by the high-voltage capacitance group module
High-power electricity energy storage is converted to quickly high-power constant current output.
2. kiloampere heavy current pulse signal generation device as claimed in claim 1, it is characterised in that the big electricity of kiloampere
Signal pulse stream generation device also includes capacitive load resistive module, and the capacitive load resistive module is connected in series in the height
Between voltage capacitance group module and the IGBT colelctor electrode.
3. kiloampere heavy current pulse signal generation device as claimed in claim 1, it is characterised in that the big electricity of kiloampere
Signal pulse stream generation device also includes being used for the control module for controlling the square-wave signal that module work occurs, the control mould
The controlled end that module occurs with the square-wave signal for the output end of block is connected.
4. kiloampere heavy current pulse signal generation device as claimed in claim 1, it is characterised in that the square-wave signal hair
Raw module includes the first triode, first switch, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the
Six resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the first trigger,
Second trigger, the 3rd trigger, the 4th trigger, the 5th trigger, the 6th trigger, the first electric capacity, the second electric capacity, first
Diode, the second diode, the 3rd diode, the first potentiometer, the second potentiometer, the 3rd potentiometer and optical-electrical converter, institute
Stating optical-electrical converter includes transmitting element and receiving unit；The first end of the first end of the first switch and the first resistor
The first end of connection, the second end of the first switch and first electric capacity, the first stationary contact of first potentiometer, move
The anode of contact and the first diode interconnects, and is grounded；Second end of the first resistor and the first end of the second resistance,
Second end of the input of first trigger and first electric capacity interconnects；Second end of the second resistance and first straight
Flow power end connection；It is first end of the output end of first trigger through second electric capacity and the 3rd resistor, described
The input of second stationary contact of the first potentiometer and second trigger interconnect, the second end of the 3rd resistor with it is described
The negative electrode connection of first diode；Base of the output end of second trigger through the 4th resistance Yu first triode
The first end of pole and the 5th resistance interconnects；The second end ground connection of 5th resistance, the colelctor electrode of first triode
The of the first end of input, the 7th resistance through the 6th resistance and the 3rd trigger and the 8th resistance
One end interconnects, the grounded emitter of first triode；The output end of 3rd trigger and the 4th trigger, the
The negative electrode interconnection of five triggers, the input of the 6th trigger, the anode of the second diode and the 3rd diode；7th electricity
Second end of resistance is connected with the first stationary contact of second potentiometer；Second end of the 8th resistance and the 3rd current potential
The first stationary contact connection of device；The negative electrode of second stationary contact of second potentiometer and movable contact and second diode is mutual
Even；Second stationary contact of the 3rd potentiometer interconnects with the anode of movable contact and the 3rd diode；4th triggering
The output end of device, the 5th trigger and the 6th trigger is respectively through the 9th resistance, the tenth resistance and the 11st resistance and institute
State the anode connection of transmitting element；The minus earth of the transmitting element, the extremely described square wave letter of current collection of the receiving unit
The output end of module number occurs, and is connected with first DC power supply terminal, the grounded emitter of the receiving unit.
5. kiloampere heavy current pulse signal generation device as claimed in claim 4, it is characterised in that the drive module bag
Include IGBT drivings optocoupler, the second triode, the 3rd triode, the 12nd resistance, the 13rd resistance, the 14th resistance, the 15th
Resistance, the 16th resistance, the 17th resistance, the 18th resistance, the 4th diode, the 5th diode, the 3rd electric capacity and the 4th electricity
Hold, the IGBT drivings optocoupler includes inversion signal triggering pin, public pin, drive signal output pin, the signal triggering pin warp
The output end that module occurs with the square-wave signal for the 12nd resistance is connected, the drive signal output pin and the described tenth
The first end of three resistance and the interconnection of the first end of the 14th resistance, the second end and the 3rd electric capacity of the 13rd resistance
The base stage interconnection of first end, the base stage of second triode and the 3rd triode；Second end of the 14th resistance
It is connected with the second end of the 3rd electric capacity with the second DC power supply terminal；The colelctor electrode and the 3rd direct current of second triode
Power end connects, and the emitter stage of the emitter stage of second triode and the 3rd triode is respectively through the 15th resistance
With gate pole, the first end of the 4th electric capacity and the first end of the 17th resistance of the 16th resistance and the IGBT
Interconnection, the colelctor electrode of the 3rd triode are connected with second DC power supply terminal；Second end of the 4th electric capacity and
Emitter stage of second end of 17 resistance respectively with the IGBT is connected；The anode of the public pin and the 4th diode connects
Connect, the negative electrode of the 4th diode is connected through the 18th resistance with the anode of the 5th diode；Described 5th 2
The negative electrode of pole pipe is connected with the anode of the 6th diode, and the negative electrode of the 6th diode is connected with the emitter stage of the IGBT.
6. kiloampere heavy current pulse signal generation device as claimed in claim 5, it is characterised in that the big electricity of kiloampere
Signal pulse stream generation device also includes IGBT protection modules, and the IGBT drivings optocoupler also includes voltage detecting pin, failure is believed
Number output pin, the IGBT protection modules include optocoupler, the 4th triode, the 5th triode, relay, double diode, the tenth
Nine resistance, the 20th resistance, the 21st resistance, the 22nd resistance, the 23rd resistance, the 24th resistance, the 5th electricity
Hold and the 6th electric capacity, the voltage detecting pin are connected with the 18th resistance, the fault-signal output pin is through the described tenth
The first end, the first end of the 5th electric capacity, the base stage of the 4th triode of nine resistance and the 20th resistance interconnect；
Second end of the 20th resistance and the second end of the 5th electric capacity, the emitter stage and described first of the 4th triode
DC power supply terminal interconnects；The colelctor electrode of 4th triode and the first end and the described 22nd of the 21st resistance
The first end interconnection of resistance；Second end of the 21st resistance is connected with the anode of the transmitting element；Described 20th
Second end of two resistance and the first end of the anode of the optocoupler, the first end of the 23rd resistance and the 6th electric capacity
Interconnection, the second end of the negative electrode of the optocoupler, the second end of the 23rd resistance and the 6th electric capacity is grounded；It is described
The colelctor electrode of optocoupler and the anode of the double diode, the first end of the relay coil, the current collection of the 5th triode
Pole and second DC power supply terminal interconnection, the first end of the emitter stage of the optocoupler and the 24th resistance and described the
The emitter stage of five triodes；Second end of the negative electrode of the double diode and the relay coil respectively with the 3rd direct current
Power end connects.
7. kiloampere heavy current pulse signal generation device as claimed in claim 6, it is characterised in that the big electricity of kiloampere
Signal pulse stream generation device also includes DC power supplier, and the signal generating module, which includes the DC power supplier, to be included
First dc source modular converter and the second dc source modular converter, the first dc source modular converter and the second direct current
The input of power transfer module is used for incoming transport power supply, and the first dc source modular converter and the second dc source turn
Power end of the output end of block respectively with square-wave signal generation module is changed the mold to be connected.
8. kiloampere heavy current pulse signal generation device as claimed in claim 7, it is characterised in that first direct current
Source modular converter includes power input, commutation diode, filtration module, the first decompression chip, the first filter capacitor and second
Filter capacitor, the power input are used to be connected with power supply, and the anode of the commutation diode is defeated with the power supply
Enter end connection, the negative electrode of the commutation diode is connected with the input of the filtration module；The first of the filtration module is defeated
The electrode input end for going out end with the described first decompression chip is connected, the second output end of the filtration module and the described first decompression
The negative input connection of chip；It is described first decompression chip cathode output end be first DC power supply terminal, and with institute
State the first end connection of the first filter capacitor and the second filter capacitor, the cathode output end of the first decompression chip and described the
Second end of one filter capacitor and the second filter capacitor is grounded.
9. kiloampere heavy current pulse signal generation device as claimed in claim 8, it is characterised in that the second dc source turns
Change the mold block include second decompression chip, the 3rd filter capacitor, the 4th filter capacitor, the 5th filter capacitor, the 25th resistance and
Voltage-regulator diode, the electrode input end of the second decompression chip are connected with the first output end of the filtration module, and described the
The negative input of two decompression chips is connected with the second output end of the filtration module；The positive pole of the second decompression chip is defeated
Go out end be the 3rd DC power supply terminal, and with the 3rd filter capacitor, the 4th filter capacitor and the 25th resistance
First end connection, it is described second decompression chip cathode output end be second DC power supply terminal, and with the described 3rd filter
Ripple electric capacity, the second end of the 3rd filter capacitor, the anode of the first end of the 5th filter capacitor and the voltage-regulator diode are mutual
Even；Second end of the negative electrode of the voltage-regulator diode and extremely described 25th resistance in the second end of the 5th filter capacitor is equal
Ground connection.
10. a kind of DIDT test equipments, it is characterised in that the DIDT test equipments include such as claim 1 to 9 any one
Described kiloampere heavy current pulse signal generation device.
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| CN201720485167.0U CN207184436U (en) | 2017-05-03 | 2017-05-03 | Kiloampere heavy current pulse signal generation device and DIDT test equipments |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040245A (en) * | 2017-05-03 | 2017-08-11 | 深圳市硕亚科技有限公司 | Kiloampere heavy current pulse signal generation device and DIDT test equipments |
| CN108809071A (en) * | 2018-08-28 | 2018-11-13 | 上海艾为电子技术股份有限公司 | A kind of SS (soft start) control circuit and Switching Power Supply of Switching Power Supply |
| CN112649753A (en) * | 2020-12-16 | 2021-04-13 | 儒竞艾默生环境优化技术（上海）有限公司 | Power module fault monitoring system and method and frequency converter |
-
2017
- 2017-05-03 CN CN201720485167.0U patent/CN207184436U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040245A (en) * | 2017-05-03 | 2017-08-11 | 深圳市硕亚科技有限公司 | Kiloampere heavy current pulse signal generation device and DIDT test equipments |
| CN107040245B (en) * | 2017-05-03 | 2023-08-22 | 深圳市硕亚科技有限公司 | Kiloamp high-current pulse signal generating device and DIDT test equipment |
| CN108809071A (en) * | 2018-08-28 | 2018-11-13 | 上海艾为电子技术股份有限公司 | A kind of SS (soft start) control circuit and Switching Power Supply of Switching Power Supply |
| CN108809071B (en) * | 2018-08-28 | 2024-05-03 | 上海艾为电子技术股份有限公司 | Soft start control circuit of switching power supply and switching power supply |
| CN112649753A (en) * | 2020-12-16 | 2021-04-13 | 儒竞艾默生环境优化技术（上海）有限公司 | Power module fault monitoring system and method and frequency converter |
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