CN104635828B - Chargeable portable numerical control experimental power supply - Google Patents
Chargeable portable numerical control experimental power supply Download PDFInfo
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- CN104635828B CN104635828B CN201410818620.6A CN201410818620A CN104635828B CN 104635828 B CN104635828 B CN 104635828B CN 201410818620 A CN201410818620 A CN 201410818620A CN 104635828 B CN104635828 B CN 104635828B
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Abstract
Chargeable portable numerical control experimental power supply, this power supply uses single lithium battery to power, with MCU as control core, selection key can be arranged by voltage x current to select output voltage or output current limiting are configured, by output voltage values and output current limiting value adjusting knob, it is achieved to output voltage and the setting of output current limiting.Single lithium battery output through battery management part and power supply and is controlled part by the present invention so that output reaches set voltage and cut-off current.Wherein each unit module of process is respectively as follows: charge management circuit module, power path management circuit module, control unit, input block, boosting unit, filter unit and pressure unit.Wherein control unit and input block and LCD display part split-phase are even so that LCD display interface shows and each arranges value and detected value.This power supply also has overcurrent protection function, and when load current exceedes the electric current of setting, buzzer warning is pointed out.
Description
Technical field
The present invention relates to numerical control experimental power supply field, particularly relate to chargeable portable numerical control experimental power supply.
Background technology
Requisite instrument when regulated power supply is debugging circuit.At present, laboratory commonly uses desk-top linearly may be used
Adjusting regulated power supply, output is up to hundreds of watts, and function admirable.But the greatest problem of this type of desk-top power supply
Being sufficiently bulky, placement takes up room；Weight is the biggest, is not easy to mobile；Price is high, adds consumption
The use cost of person.Use very inconvenient in the case of the most mobile use of limited space or needs.
To this end, the present invention completes a kind of chargeable portable numerical control experimental power supply.
Summary of the invention
The invention aims to overcome existing experiment DCPS digitally controlled power source volume big, weight is big, and price is high and makes
The use inconvenience become, completes a kind of chargeable portable numerical control experimental power supply for this present invention.Size of power is only
Suitable for credit card-sized, weight and mobile phone, output voltage 1.5V-24V is adjustable, output current limiting 10mA-1A
Adjustable, peak power output is up to 5W.
The present invention can be achieved through the following technical solutions:
Equipment includes shell body, on and off switch, UART interface, charging inlet, output switch key, voltage
Electric current arranges selection key, output voltage values and output current limiting value adjusting knob, output port, grounding ports.
Three pieces of circuit boards are fixed in shell body.Above equipment each several part all fixedly mounts on circuit boards.Feature exists
In, shell body is a rule cuboid；The front space of a whole page of shell body is LCD display；The left space of a whole page of shell body
It is provided with on and off switch, output port, grounding ports, charging inlet；The right space of a whole page of shell body is provided with URAT
Interface；The upper space of a whole page of shell body is provided with output switch key, voltage x current arrange selection key, output voltage values and
Output current limiting value adjusting knob.
A kind of DCPS digitally controlled power source, including three parts, respectively: LCD display part, battery management part with
And power supply and control part.Wherein LCD display part is made up of TFT LCD and LCD backlight drive circuit.
Battery management part is made up of battery, charge management circuit and power path management circuit.Power supply and control portion
Divide and be made up of five unit, include input block, boosting unit, filter unit, pressure unit and control respectively
Unit processed.
The present invention uses single lithium battery to power, and with MCU as control core, can arrange choosing by voltage x current
Select key to select output voltage or defeated threshold currents are configured, regulated by output voltage values and output current limiting value
Knob, it is achieved to output voltage and the setting of output current limiting.Single lithium battery is exported through cell tube by the present invention
Reason part and power supply and control part so that output reaches set voltage and cut-off current.Wherein process
Each unit module be respectively as follows: charge management circuit module, power path management circuit module, control unit,
Input block, boosting unit, filter unit and pressure unit.Wherein control unit and input block and LCD
Display part split-phase is even so that LCD display interface shows: open output (Enable) instruction, overcurrent protection
(OCP) instruction, battery dump energy percentage ratio, actual output voltage value, actual output current value, set
Put output voltage values, output current limiting value, lithium battery output voltage values, lithium battery output current value, liter are set
Volt circuit output voltage values.This power supply also has overcurrent protection function, when load current exceedes the electric current of setting,
Buzzer warning is pointed out.
Below each several part modular unit is specifically described.
LCD display part 17 includes TFT LCD and LCD backlight drive circuit.
Battery management part 18 includes battery, charge management circuit and power path management circuit.
Basic circuit includes input block 12, boosting unit 13, filter unit 14, pressure unit 15, controls
Unit 16, LCD show part 17；
Input block 12 includes total power switch circuit, input electric cur-rent measure circuit, input voltage detection circuit.
Boosting unit 13 includes that DC-DC booster circuit, boost output voltage arrange circuit, boost output voltage
Testing circuit.
Filter unit 14 includes LC filter circuit.
Pressure unit 15 includes LDO reduction voltage circuit, and LDO output voltage is arranged, and LDO output current limiting is arranged,
LDO output electric current measure, LDO output voltage detects.
Control unit 16 include input power-down protection circuit, STM32F103VCT6 governor circuit, button,
Switch, encoder, buzzer and LCD interface.
This chargeable portable numerical control experimental power supply external structure includes: LCD display 1, on and off switch 2,
Output port 3, grounding ports 4, battery charging inlet 5, UART interface 6, output switch key 7, electricity
Current voltage arranges selection key 8, output voltage values and output current limiting value adjusting knob 9, thermovent 10, shell
Body 11.
Input block 12 is connected with control unit 16, thus shows cell output voltage and current value.Input
The output of unit 12 is connected with the input of boosting unit 13.Boosting unit 13 is connected with control unit 16,
Thus control boost output voltage value and display boost output voltage value.Output and the filtering of boosting unit 13 are single
The input of unit 14 is connected.The output of filter unit 14 is connected with the input of pressure unit 15.Pressure unit
15 are connected with control unit 16, thus control reduced output voltage voltage and cut-off current and show its reduced output voltage electricity
Pressure and current value.Pressure unit 16 is output as the final output of this power supply.LCD display part 17 and control
Unit 16 processed is connected, thus shows every value.Power management section 18 is connected with battery, thus realizes
The rechargeable function of power supply of the present invention.
In control unit 16, control chip STM32F103VCT6 is connected with LCD display 1, controls LCD
Display.
On and off switch 2 is connected with resistance R1 in input block 12 and metal-oxide-semiconductor Q2 and constitutes total power switch electricity
Road.
Output port 3 is connected with the output of pressure unit 15.
Grounding ports 4 is connected with systematically GND.
Outside 5V DC source is inputted by USB interface 5, resistance R7, R8, R9, R10, diode
D2, D3 and metal-oxide-semiconductor Q2, Q3 constitute protection circuit against input over-voltage.Power supply one tunnel through overvoltage protection
Being connected to IC1LTC4001 lithium cell charging managing chip to be charged lithium battery, a road is connected to by electricity
Resistance R5, R6, the power path management circuit that diode D1 and metal-oxide-semiconductor Q1 is constituted is input-cell circuitry
Power supply.
UART interface 6 is connected with control chip STM32F103VCT6 in control unit, is used for and outside
Communicate.
Output switch key 7 is connected with control chip STM32F103VCT6 in control unit, thus controls defeated
Go out opens and shuts off.
Voltage x current arranges selection key 8 and is connected with control chip STM32F103VCT6 in control unit, from
And control selection and carry out voltage or electric current setting.
Output voltage values and output current limiting value adjusting knob 9 are rotary encoders, thus are used for regulating set
Magnitude of voltage or cut-off current.Rotary encoder is connected with control chip STM32F103VCT6 in control unit.
Thermovent 10 is placed in around circuit board, thus to dispel the heat to whole power-supply system.
LCD display 1, on and off switch 2, output port 3, grounding ports 4, battery charging inlet 5,
UART interface 6, output switch key 7, voltage x current arrange selection key 8, output voltage values and output current limiting
Value adjusting knob 9, thermovent 10 are arranged on shell body 11, thus fixing whole system.
Compared with prior art the present invention can obtain following beneficial effect.
The present invention can be compared with current all kinds of power supplys, chargeable and utilize built-in power to power, it is not necessary to
External power supply.The present invention is capable of digital control output, can open output (Enable) by liquid crystal display screen display
Instruction, overcurrent protection (OCP) instruction, battery dump energy percentage ratio, actual output voltage value, reality
Output current value, output voltage values is set, output current limiting value, lithium battery output voltage values, lithium battery are set
Output current value, booster circuit output voltage values.This power supply also has overcurrent protection function, when load current surpasses
When crossing the electric current set, buzzer warning is pointed out.Can be widely used as student power source, scientific experiments power supply uses.
It is little that the present invention has more volume, lightweight, the feature being convenient for carrying.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is each several part basic circuit connection figure of the present invention；
Fig. 3 is the flow chart of the present invention；
Fig. 4 is the battery management partial circuit schematic diagram of the present invention；
Fig. 5 is the input-cell circuitry schematic diagram of the present invention；
Fig. 6 is the boosting unit circuit theory diagrams of the present invention；
Fig. 7 is the filter unit circuit theory diagrams of the present invention；
Fig. 8 is the pressure unit circuit theory diagrams of the present invention；
Fig. 9 is the control unit circuit theory diagrams of the present invention；
Figure 10 is the LCD display part parallel circuit schematic diagram of the present invention；
In figure: 1 is LCD display, 2 is on and off switch, and 3 is output port, and 4 is grounding ports, 5
For battery charging inlet, 6 is UART interface, and 7 is output switch key, and 8 arrange selection key for voltage x current,
9 is output voltage values and output current limiting value adjusting knob, and 10 is thermovent, and 11 is shell body, and 12 is input
Unit, 13 is boosting unit, and 14 is filter unit, and 15 is pressure unit, and 16 is control unit, and 17 are
LCD shows part, and 18 is battery management part.
Detailed description of the invention
Below with reference to the drawings and specific embodiments, the invention will be further described.
As it is shown in figure 1, this chargeable portable numerical control experimental power supply external structure includes: LCD display 1,
On and off switch 2, output port 3, grounding ports 4, battery charging inlet 5, UART interface 6, output
On & off switch 7, voltage x current arrange selection key 8, output voltage values and output current limiting value adjusting knob 9, heat radiation
Mouth 10, shell body 11.
Fig. 2 is each several part basic circuit annexation figure of the present invention.Basic circuit includes input block 12, rises
Pressure unit 13, filter unit 14, pressure unit 15, control unit 16, LCD show part 17；Input
Unit 12 is connected with control unit 16, thus shows cell output voltage and current value.Input block 12
Output is connected with the input of boosting unit 13.Boosting unit 13 is connected with control unit 16, thus controls to rise
Pressure output voltage values and display boost output voltage value.The output of boosting unit 13 and filter unit 14 defeated
Enter connected.The output of filter unit 14 is connected with the input of pressure unit 15.Pressure unit 15 and control are single
Unit 16 is connected, thus controls reduced output voltage voltage and cut-off current and show its reduced output voltage voltage and current value.
Pressure unit 16 is output as the final output of this power supply.LCD display part 17 and control unit 16 phase
Connect, thus show every value.Power management section 18 is connected with battery, thus realizes power supply of the present invention
Rechargeable function.
In control unit 16, control chip STM32F103VCT6 is connected with LCD display 1, controls LCD
Display.
On and off switch 2 is connected with resistance R1 in input block 12 and metal-oxide-semiconductor Q2 and constitutes total power switch electricity
Road.
Output port 3 is connected with the output of pressure unit 15.
Grounding ports 4 is connected with systematically GND.
Outside 5V DC source is inputted by USB interface 5, resistance R7, R8, R9, R10, diode
D2, D3 and metal-oxide-semiconductor Q2, Q3 constitute protection circuit against input over-voltage.Power supply one tunnel through overvoltage protection
Being connected to IC1LTC4001 lithium cell charging managing chip to be charged lithium battery, a road is connected to by electricity
Resistance R5, R6, the power path management circuit that diode D1 and metal-oxide-semiconductor Q1 is constituted is input-cell circuitry
Power supply.
UART interface 6 is connected with control chip STM32F103VCT6 in control unit, is used for and outside
Communicate.
Output switch key 7 is connected with control chip STM32F103VCT6 in control unit, thus controls defeated
Go out opens and shuts off.
Voltage x current arranges selection key 8 and is connected with control chip STM32F103VCT6 in control unit, from
And control selection and carry out voltage or electric current setting.
Output voltage values and output current limiting value adjusting knob 9 are rotary encoders, thus are used for regulating set
Magnitude of voltage or cut-off current.Rotary encoder is connected with control chip STM32F103VCT6 in control unit.
Thermovent 10 is placed in around circuit board, thus to dispel the heat to whole power-supply system.
LCD display 1, on and off switch 2, output port 3, grounding ports 4, battery charging inlet 5,
UART interface 6, output switch key 7, voltage x current arrange selection key 8, output voltage values and output current limiting
Value adjusting knob 9, thermovent 10 are arranged on shell body 11, thus fixing whole system.
Fig. 3 is the flow chart of the present invention.During power work of the present invention, first set output voltage and output limit
Stream.Power supply of the present invention is powered by rechargeable battery.Charged the battery by USB interface.Battery connects main power
Switching and input as power supply, power supply input connects input power-down protection circuit, and power supply input simultaneously connects power supply input
Voltage detecting circuit and mains input current testing circuit, control LCD display circuit by control unit and carry out
Display.The output of power-down protection circuit is connected with control unit.Then pass through control unit according to boosting output
Voltage set value controls boosting unit and controls LCD display circuit display boost output voltage detected value.Boosting
Output is connected to LDO reduction voltage circuit through LC filter circuit.Followed by defeated according to LDO by control unit
Go out voltage set value and LDO output current limiting arranges value and controls pressure unit and control LCD display circuit and show
LDO output voltage arranges value, LDO output current limiting arranges value.Finally, by control unit, LDO drops
Volt circuit output is shown by LCD display circuit through voltage detecting circuit and output current detection circuit.
Fig. 4 is the battery management partial circuit schematic diagram of the present invention.Outside 5V DC source is connect by USB
Mouth input, resistance R7, R8, R9, R10, diode D2, D3 and metal-oxide-semiconductor Q2, Q3 constitute defeated
Enter overvoltage crowbar.It is connected to IC1LTC4001 lithium cell charging pipe through power supply one tunnel of overvoltage protection
Lithium battery is charged by reason chip, and a road is connected to by resistance R5, R6, diode D1 and metal-oxide-semiconductor
The power path management circuit that Q1 is constituted is that input-cell circuitry is powered.
Fig. 5 is the input-cell circuitry schematic diagram of the present invention.Resistance R1, metal-oxide-semiconductor Q2 and switch SW1
Constitute total power switch circuit.Resistance R2, R3 carry out dividing potential drop to input voltage, and by by IC2A amplifier
The voltage follower constituted is connected to the ADC input pin of control unit, to realize input voltage measurement.Electricity
Resistance R4, R5, R6, R7, current monitoring chip IC 1 and amplifier IC2B constitute input electric cur-rent measure circuit.
The output of input block is connected to booster circuit part.
Fig. 6 is the boosting unit circuit theory diagrams of the present invention.Utilize and be made up of Boost type boost chip IC11
Boost converter by the boost in voltage of lithium battery 3.3V-4.2V scope to 4.5V-24.5V scope, boost defeated
Go out magnitude of voltage to be arranged by the magnitude of voltage of V_MID_SET node.The output of boosting unit is connected to filter unit.
Fig. 7 is the filter unit circuit theory diagrams of the present invention.Inductance L31 and electric capacity C31, C32 constitute LC
Passive low-pass filter circuit, in order to reduce ripple and the noise of boosting output.Fall is received in the output of filter unit
Pressure unit.
Fig. 8 is the pressure unit circuit theory diagrams of the present invention；Linear voltage stabilization controller IC 41 and metal-oxide-semiconductor Q4
Constitute LDO decompression voltage regulator, reduce ripple and the noise of out-put supply further.Output voltage values by
The magnitude of voltage of V_OUT_SET node is arranged.Current detecting chip IC 42 and amplifier IC44, IC45 are constituted
Current-limiting circuit, cut-off current is arranged by the magnitude of voltage of IC44A in-phase input end.Pressure unit is output as finally
Output Vout.
Fig. 9 is the control unit circuit theory diagrams of the present invention；Master controller is ARM Cortex-M3 core
32 MCU IC63.By circuit realiration output voltage and the setting of current limliting of main control unit and various piece,
The detection of buzzer warning, input voltage and electric current, actual output voltage and the detection of output electric current, unlatching
The display function that output (Enable) instruction, overcurrent protection (OCP) indicate.
Figure 10 is the LCD display part parallel circuit schematic diagram of the present invention；By synchronous buck converter IC1 and LDO
The circuit that manostat IC2 is constituted is respectively backlight and the power logic circuitry of LCD display.Connector P1
Interface contains power supply, control and data pins, is connected to control unit, shows realizing LCD.
Claims (5)
1. a chargeable portable numerical control experimental power supply, it is characterised in that: this power supply includes three parts, is respectively
LCD display part, battery management part and power supply and control part；Wherein LCD display part by
TFTLCD and LCD backlight drive circuit composition；Battery management part is by battery, charge management circuit and electricity
Source path management circuit composition；Power supply and control part are made up of five unit, include respectively input block,
Boosting unit, filter unit, pressure unit and control unit；
LCD display part (17) includes TFTLCD and LCD backlight drive circuit；
Battery management part (18) includes battery, charge management circuit and power path management circuit；
Power supply and control part, its basic circuit includes input block (12), boosting unit (13), filter unit
(14), pressure unit (15), control unit (16), LCD display part (17)；
Input block (12) includes total power switch circuit, input electric cur-rent measure circuit, input voltage detection circuit；
Boosting unit (13) includes that DC-DC booster circuit, boost output voltage arrange circuit, boost output voltage
Testing circuit；
Filter unit (14) includes LC filter circuit；
Pressure unit (15) includes LDO reduction voltage circuit, and LDO output voltage is arranged, and LDO output current limiting is arranged,
LDO output electric current measure, LDO output voltage detects；
Control unit (16) include input power-down protection circuit, STM32F103VCT6 governor circuit, button,
Switch, encoder, buzzer and LCD interface；
This chargeable portable numerical control experimental power supply external structure includes LCD display (1), on and off switch (2), defeated
Go out port (3), grounding ports (4), battery charging inlet (5), UART interface (6), output switch key (7), electricity
Current voltage arranges selection key (8), output voltage values and output current limiting value adjusting knob (9), thermovent (10), outer
Housing (11)；
Input block (12) is connected with control unit (16), thus shows cell output voltage and current value；Input is single
Unit's output of (12) is connected with the input of boosting unit (13)；Boosting unit (13) is connected with control unit (16), from
And control described boosting unit (13) output voltage values and display described boosting unit (13) output voltage values；Boosting
The output of unit (13) is connected with the input of filter unit (14)；The output of filter unit (14) and pressure unit (15)
Input be connected；Pressure unit (15) is connected with control unit (16), thus it is defeated to control described pressure unit (15)
Go out voltage and cut-off current and show described pressure unit (15) output voltage and current value；Pressure unit (16) defeated
Go out the final output for this power supply；LCD display part (17) is connected with control unit (16), thus shows every
Value；Power management section 18 is connected with battery；
In control unit (16), control chip STM32F103VCT6 is connected with LCD display (1), controls LCD
Display；
On and off switch (2) is connected with resistance R1 and metal-oxide-semiconductor Q2 in input block (12) and constitutes total power switch electricity
Road；
Output port (3) is connected with the output of pressure unit (15)；
Grounding ports (4) is connected with systematically GND；
Outside 5V DC source is inputted by USB interface (5), resistance R7, R8, R9, R10, diode
D2, D3 and metal-oxide-semiconductor Q2, Q3 constitute protection circuit against input over-voltage, one end of resistance R7 and metal-oxide-semiconductor
The emitter stage of Q2 connects, and the other end of resistance R7 is connected with negative electrode, one end of resistance R8 of diode D2,
The plus earth of diode D2, the other end of resistance R8 is connected with the base stage of metal-oxide-semiconductor Q2, metal-oxide-semiconductor
The colelctor electrode of Q2 and one end of resistance R9, one end of resistance R10, the anode of diode D3, metal-oxide-semiconductor
The grid of Q3 connects, the other end ground connection of resistance R9；The other end of resistance R10 is sent out with metal-oxide-semiconductor Q2's
Emitter-base bandgap grading connects；The negative electrode of diode D3 is connected with the emitter stage of metal-oxide-semiconductor Q2；The drain electrode of metal-oxide-semiconductor Q3
It is connected with+5v_IN with emitter stage, the source electrode of metal-oxide-semiconductor Q3 of metal-oxide-semiconductor Q2；Electricity through overvoltage protection
Source one road is connected to IC1LTC4001 lithium cell charging managing chip and is charged lithium battery, and a road is connected to
The power path management circuit being made up of resistance R5, R6, diode D1 and metal-oxide-semiconductor Q1 is input block
Circuit is powered, and one end of resistance R5 is connected with the grid of metal-oxide-semiconductor Q1, the other end of resistance R5 and resistance
One end of R6 ,+5V_IN connect, the other end ground connection of resistance R6, the source electrode of metal-oxide-semiconductor Q1 and VBAT
Connecting, the drain electrode of metal-oxide-semiconductor Q1 is connected with negative electrode, the VOUT of diode D1, the anode of diode D1
It is connected with+5V_IN；
UART interface (6) is connected with control chip STM32F103VCT6 in control unit, for entering with outside
Row communication；
Output switch key (7) is connected with control chip STM32F103VCT6 in control unit, thus controls output
Open and shut off；
Voltage x current arranges selection key (8) and is connected with control chip STM32F103VCT6 in control unit, thus
Control selection and carry out voltage or electric current setting；
Output voltage values and output current limiting value adjusting knob (9) are rotary encoders, thus set for regulating
Magnitude of voltage or cut-off current；Rotary encoder is connected with control chip STM32F103VCT6 in control unit；
Thermovent (10) is placed in around circuit board, thus to dispel the heat to whole power-supply system；
LCD display (1), on and off switch (2), output port (3), grounding ports (4), battery charging inlet (5),
UART interface (6), output switch key (7), voltage x current arrange selection key (8), output voltage values and output limit
Flow valuve adjusting knob (9), thermovent (10) are arranged on shell body (11), thus fixing whole system.
A kind of chargeable portable numerical control experimental power supply the most according to claim 1, it is characterised in that: boosting unit
(13) and filter unit (14), utilize the boost converter being made up of Boost type boost chip IC11 by lithium battery
The boost in voltage of 3.3V-4.2V scope is to 4.5V-24.5V scope, and boost output voltage value is by V_MID_SET
The magnitude of voltage of node is arranged；The output of boosting unit is connected to filter unit (14).
A kind of chargeable portable numerical control experimental power supply the most according to claim 1, it is characterised in that: described blood pressure lowering
Unit (15), linear voltage stabilization controller IC 41 and metal-oxide-semiconductor Q4 constitute LDO decompression voltage regulator, enter one
Step reduces ripple and the noise of out-put supply；Output voltage values is arranged by the magnitude of voltage of V_OUT_SET node；
Current detecting chip IC 42 and amplifier IC44, IC45 constitute current-limiting circuit, and cut-off current is defeated by IC44A homophase
The magnitude of voltage entering end is arranged；Pressure unit is output as final output Vout.
A kind of chargeable portable numerical control experimental power supply the most according to claim 1, it is characterised in that: control unit
(16), master controller is 32 MCUIC63 of ARMCortex-M3 core；By main control unit and each
Part circuit realiration output voltage and the detection of the setting of current limliting, buzzer warning, input voltage and electric current,
Actual output voltage and the detection of output electric current, unlatching output instruction, the display function of overcurrent protection instruction.
A kind of chargeable portable numerical control experimental power supply the most according to claim 1, it is characterised in that: described LCD
The circuit that display part (17) is made up of synchronous buck converter IC1 and LDO voltage stabilizer IC2 is respectively LCD
The backlight of display screen and power logic circuitry；Connector P1 interface contains power supply, control and data pins, even
Receive control unit, show realizing LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410818620.6A CN104635828B (en) | 2014-12-24 | 2014-12-24 | Chargeable portable numerical control experimental power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410818620.6A CN104635828B (en) | 2014-12-24 | 2014-12-24 | Chargeable portable numerical control experimental power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104635828A CN104635828A (en) | 2015-05-20 |
| CN104635828B true CN104635828B (en) | 2016-08-17 |
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|---|---|---|---|
| CN201410818620.6A Expired - Fee Related CN104635828B (en) | 2014-12-24 | 2014-12-24 | Chargeable portable numerical control experimental power supply |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105811496A (en) * | 2016-03-03 | 2016-07-27 | 深圳市汇业电子有限公司 | Power smart lithium battery based on outdoor emergency operation and remote control |
| CN106160512A (en) * | 2016-08-25 | 2016-11-23 | 合肥博雷电气有限公司 | A kind of superconducting magnet wide cut large power, electrically source apparatus |
| CN114872461B (en) * | 2022-05-07 | 2024-06-14 | 华芯科技(恩施)有限公司 | Intelligent seal management system and control method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082823A (en) * | 2006-05-29 | 2007-12-05 | 华硕电脑股份有限公司 | Voltage regulator circuit having overcurrent protection |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3983612B2 (en) * | 2002-07-08 | 2007-09-26 | ローム株式会社 | Stabilized power supply with current limiting function |
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2014
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101082823A (en) * | 2006-05-29 | 2007-12-05 | 华硕电脑股份有限公司 | Voltage regulator circuit having overcurrent protection |
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| CN104635828A (en) | 2015-05-20 |
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