CN206060234U - A kind of high-voltage conducting wires energy obtaining system - Google Patents
A kind of high-voltage conducting wires energy obtaining system Download PDFInfo
- Publication number
- CN206060234U CN206060234U CN201621069824.5U CN201621069824U CN206060234U CN 206060234 U CN206060234 U CN 206060234U CN 201621069824 U CN201621069824 U CN 201621069824U CN 206060234 U CN206060234 U CN 206060234U
- Authority
- CN
- China
- Prior art keywords
- resistance
- chip
- pin
- operational amplifier
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001914 filtration Methods 0.000 claims abstract description 43
- 230000005611 electricity Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
This utility model belongs to transmission line of electricity on-line monitoring field, more particularly to a kind of high-voltage conducting wires energy obtaining system.This utility model includes front end impact protection circuit, first current rectifying and wave filtering circuit, overvoltage crowbar, second current rectifying and wave filtering circuit and DC DC converter circuits, one end of the front end impact protection circuit is connected with taking energy coil, the outfan of front end impact protection circuit is connected with the input of first current rectifying and wave filtering circuit, the outfan of first current rectifying and wave filtering circuit connects the input of overvoltage crowbar, the outfan of the overvoltage crowbar connects the input of the second current rectifying and wave filtering circuit, second rectification filter circuit output end connects the input of DC DC converter circuits.First current rectifying and wave filtering circuit and the specific circuit structure of the second current rectifying and wave filtering circuit can improve effectiveness and precision, so as to substantially increase the precision and stability of this utility model measurement signal, and simple structure of the present utility model, it is with low cost, be easily installed.
Description
Technical field
This utility model belongs to transmission line of electricity on-line monitoring field, more particularly to a kind of high-voltage conducting wires energy obtaining system.
Background technology
The energy mode that takes of current power transmission circuit on-Line Monitor Device has：Solar energy adds accumulator, laser to take energy, and solar energy adds
Accumulator is to convert solar energy into electrical energy, normal work of the part for circuit, and another part charges to accumulator, energy
Amount storage is in accumulator；It can be that light energy is sent to high-pressure side by optical fiber from low-pressure end that laser takes, by opto-electronic conversion
Device converts light energy into electric energy, then through DC-DC change-over circuits by voltage stabilization to the supply voltage for needing.
Solar energy is unstable, therefore solar energy adds accumulator energy obtaining system protected from environmental larger, and laser takes and can be
The installation difficulty of system is larger, and technology is also immature, therefore needs badly and propose a kind of good stability, with low cost, taking of being easily installed
Can system.
Utility model content
This utility model is in order to overcome the above-mentioned deficiencies of the prior art, there is provided a kind of high-voltage conducting wires energy obtaining system, this reality
With new simple structure, good stability, it is with low cost, be easily installed.
Techniques discussed above is solved the problems, such as, the technical scheme that this utility model is taken is：
A kind of high-voltage conducting wires energy obtaining system, including front end impact protection circuit, the first current rectifying and wave filtering circuit, overvoltage protection electricity
Road, the second current rectifying and wave filtering circuit and DC-DC converter circuit, one end and the taking energy coil phase of the front end impact protection circuit
Even, the outfan of front end impact protection circuit is connected with the input of first current rectifying and wave filtering circuit, the first rectification filter
The outfan of wave circuit connects the input of overvoltage crowbar, and the outfan of the overvoltage crowbar connects the second rectification filter
The input of wave circuit, second rectification filter circuit output end connect the input of DC-DC converter circuit.
Preferably, first current rectifying and wave filtering circuit includes the first operational amplifier, the second operational amplifier and the 3rd
Operational amplifier, the negative signal input of first operational amplifier connect one end of the 4th resistance, the second diode
One end of negative electrode, the 5th resistance, an outfan of the other end connection front end impact protection circuit of the 4th resistance, first
The positive signal input of operational amplifier connects one end of second resistance, and the other end of the second resistance, the first computing are put
Another outfan of the positive electrical source, one end of 3rd resistor and front end impact protection circuit of big device is grounded, described
The signal output part and the negative electrode of the first diode of anode first operational amplifier of connection of the second diode, the described 1st
The anode of pole pipe connects one end of first resistor, the other end of the 5th resistance, the negative electricity of first operational amplifier respectively
Source connects power supply；The positive signal input of the other end second operational amplifier of connection of the 3rd resistor, described first
The other end of resistance connects the negative signal input of one end of the 6th resistance, the second operational amplifier respectively, and the described 6th is electric
The other end of resistance connects one end of the signal output part of the second operational amplifier and the 7th resistance respectively, and second computing is put
The cathode power supply end ground connection of big device, negative electricity source connection power supply；The other end of the 7th resistance connects the 8th resistance respectively
One end and the first electric capacity one end, the other end of the 8th resistance connects one end and the 3rd fortune of the second electric capacity respectively
The positive signal input of amplifier is calculated, the other end ground connection of second electric capacity, the negative signal of the 3rd operational amplifier are defeated
Enter one end, one end of the tenth resistance that end connects the 9th resistance respectively, the other end of the 9th resistance is grounded, the tenth resistance
The other end connects the defeated of the other end of the first electric capacity, the signal output part of the 3rd operational amplifier and overvoltage crowbar respectively
Enter end, the positive electrical source and negative electricity source of the 3rd operational amplifier are all connected with power supply.
Preferably, the circuit structure phase of the circuit structure of second current rectifying and wave filtering circuit and the first current rectifying and wave filtering circuit
Together.
Preferably, the DC-DC converter circuit includes the first chip and the second chip, the pin 1 of first chip
Connect one end of the anode and the first inductance of the 3rd diode respectively, the negative electrode of the 3rd diode connects the first electric capacity
One end, one end of the 13rd resistance out-put supply, the other end of first electric capacity connect respectively the pin 2 of the first chip,
The pin 4 of one end of the second electric capacity and the first chip is simultaneously grounded, and the other end of second electric capacity connects drawing for the first chip
Foot 3, the other end of the 13rd resistance connect one end of the 14th resistance and the pin 5 of the first chip respectively, and described
The other end ground connection of 14 resistance, the other end of first inductance connect one end of the 11st resistance, the 12nd resistance respectively
One end and the first chip pin 7, the other end of the 11st resistance connects the pin 8 of the first chip, the described tenth
The other end of two resistance connects the pin 6 of the first chip, the pin 6 of the second chip, one end of the 15th resistance and respectively
Two rectification filter circuit output ends, the other end of the 15th resistance connect the pin 7 of the second chip, pin 8, pin respectively
1, the pin 5 of second chip connects one end and one end of the 17th resistance of the 16th resistance respectively, and the described 17th
The other end ground connection of resistance, the other end of the 16th resistance connect the pin 3 of the second chip, pin 4, the 3rd electric capacity respectively
One end, one end of the 4th electric capacity out-put supply, the other end of the 3rd electric capacity connects the anode of the 4th diode, described
The negative electrode of the 4th diode connects one end of the second inductance and the pin 2 of the second chip, the other end of second inductance, the
The other end of four electric capacity is grounded.
Further, the chip model of first chip and the second chip is MC34063.
The beneficial effects of the utility model are：
(1), this utility model include front end impact protection circuit, the first current rectifying and wave filtering circuit, overvoltage crowbar, second
Current rectifying and wave filtering circuit and DC-DC converter circuit, the first current rectifying and wave filtering circuit and the specific circuit of the second current rectifying and wave filtering circuit
Structure can improve effectiveness and precision, so as to substantially increasing the precision of this utility model measurement signal and stablizing
Property, and simple structure of the present utility model, it is with low cost, be easily installed.
(2), the chip model of first chip and the second chip is MC34063, and the device contains DC-DC in itself
The monolithic control circuit of the major function required for changer, and it is cheap.
Description of the drawings
Below the labelling in the content and figure of every width accompanying drawing expression in this utility model description is briefly described：
Fig. 1 is composition connection block diagram of the present utility model；
Fig. 2 is the circuit theory diagrams of the first current rectifying and wave filtering circuit of the present utility model；
Fig. 3 is the circuit theory diagrams of DC-DC converter circuit of the present utility model.
Labelling in above-mentioned figure is：10th, front end impact protection circuit；20th, the first current rectifying and wave filtering circuit；30th, overvoltage is protected
Protection circuit；40th, the second current rectifying and wave filtering circuit；50th, DC-DC converter circuit；
A1～A3：First operational amplifier～the 3rd operational amplifier
R1～R17：First resistor～the 17th resistance
D1～D3：First diode～the 3rd diode
L1、L2：First inductance～the second inductance
Specific embodiment
It is below against accompanying drawing, the shape of each component to specific embodiment of the present utility model as involved by, construction, each
Mutual alignment and annexation, the effect of each several part and operation principle between part etc. are described in further detail：
As shown in figure 1, a kind of high-voltage conducting wires energy obtaining system, including front end impact protection circuit 10, the first rectifying and wave-filtering electricity
Road 20, overvoltage crowbar 30, the second current rectifying and wave filtering circuit 40 and DC-DC converter circuit 50, the front end surge protection
One end of circuit 10 is connected with taking energy coil, the outfan of front end impact protection circuit 10 and first current rectifying and wave filtering circuit 20
Input connection, the outfan of first current rectifying and wave filtering circuit 20 connects the input of overvoltage crowbar 30, the mistake
The outfan of voltage protection circuit 30 connects the input of the second current rectifying and wave filtering circuit 40, and second current rectifying and wave filtering circuit 40 is exported
The input of end connection DC-DC converter circuit 50, passes through wire between the front end impact protection circuit 10 and taking energy coil
It is connected.
As shown in Fig. 2 first current rectifying and wave filtering circuit 20 includes the first operational amplifier A 1, the second operational amplifier A 2
And the 3rd operational amplifier A 3, the negative signal input of first operational amplifier A 1 connects the one of the 4th resistance R4
End, the negative electrode of the second diode D2, one end of the 5th resistance R5, the other end connection front end surge protection of the 4th resistance R4
One outfan of circuit 10, the positive signal input of the first operational amplifier A 1 connect one end of second resistance R2, described
The impact of the other end of second resistance R2, the positive electrical source of the first operational amplifier A 1, one end of 3rd resistor R3 and front end
Another outfan of protection circuit 10 is grounded, and the anode of the second diode D2 connects the letter of the first operational amplifier A 1
The negative electrode of number outfan and the first diode D1, the anode of the first diode D1 connect the one of first resistor R1 respectively
End, the other end of the 5th resistance R5, the negative electricity source connection power supply of first operational amplifier A 1；3rd resistor R3
The other end connect the positive signal input of the second operational amplifier A 2, the other end of first resistor R1 connects the respectively
One end of six resistance R6, the negative signal input of the second operational amplifier A 2, the other end of the 6th resistance R6 connect respectively
Connect one end of the signal output part and the 7th resistance R7 of the second operational amplifier A 2, the positive pole of second operational amplifier A 2
Power end ground connection, negative electricity source connection power supply；The other end of the 7th resistance R7 connects one end of the 8th resistance R8 respectively
And first electric capacity C1 one end, the other end of the 8th resistance R8 connects one end and the 3rd fortune of the second electric capacity C2 respectively
Calculate the positive signal input of amplifier A3, the other end ground connection of the second electric capacity C2, the negative pole of the 3rd operational amplifier A 3
Signal input part connects one end of the 9th resistance R9, one end of the tenth resistance R10, another termination of the 9th resistance R9 respectively
Ground, the other end of the tenth resistance R10 connect the other end of the first electric capacity C1, the signal output part of the 3rd operational amplifier A 3 respectively
And the input of overvoltage crowbar 30, the positive electrical source and negative electricity source of the 3rd operational amplifier A 3 are all connected with
Power supply.
The circuit structure of second current rectifying and wave filtering circuit 40 is identical with the circuit structure of the first current rectifying and wave filtering circuit 20.Adopt
Effectiveness, sensitivity and precision can be effectively improved with the first current rectifying and wave filtering circuit 20 and the second current rectifying and wave filtering circuit 40.
The first diode D1, the model of the second diode D2 are 1N5819.
As shown in figure 3, the DC-DC converter circuit 50 includes the first chip U1 and the second chip U2, first core
The pin 1 of piece U1 connects one end of the anode and the first inductance L1 of the 3rd diode D3 respectively, the 3rd diode D3's
Negative electrode connects one end of the first electric capacity C1, one end of the 13rd resistance R13 out-put supply, the other end of the first electric capacity C1
Connect the pin 2 of the first chip U1, the pin 4 of one end of the second electric capacity C2 and the first chip U1 respectively and be grounded, described
The other end of two electric capacity C2 connects the pin 3 of the first chip U1, and the other end of the 13rd resistance R13 connects the 14th respectively
One end of resistance R14 and the pin 5 of the first chip U1, the other end ground connection of the 14th resistance R14, first inductance
The other end of L1 connects the pin of one end, one end of the 12nd resistance R12 and the first chip U1 of the 11st resistance R11 respectively
The other end of 7, the 11st resistance R11 connects the pin 8 of the first chip U1, the other end point of the 12nd resistance R12
Do not connect pin 6, the pin 6 of the second chip U2, one end of the 15th resistance R15 and second rectifying and wave-filtering of the first chip U1
40 outfan of circuit, the other end of the 15th resistance R15 connect the pin 7 of the second chip U2, pin 8, pin 1 respectively,
The pin 5 of the second chip U2 connects one end and one end of the 17th resistance R17 of the 16th resistance R16 respectively, described
The other end ground connection of the 17th resistance R17, the other end of the 16th resistance R16 connect respectively the pin 3 of the second chip U2,
Pin 4, one end of the 3rd electric capacity C3, one end of the 4th electric capacity C4 out-put supply, the other end connection of the 3rd electric capacity C3
The anode of the 4th diode D4, the negative electrode of the 4th diode D4 connect one end of the second inductance L2 and the second chip U2
Pin 2, the other end of the second inductance L2, the other end of the 4th electric capacity C4 are grounded.
The chip model of the first chip U1 and the second chip U2 is MC34063, and the device contains DC-DC in itself
The monolithic control circuit of the major function required for changer, and it is cheap.
3rd diode D3, the model of the 4th diode D4 are 1N5819.
The taking energy coil is using with cored coil, and the electromagnetic energy around high-voltage line is converted into electric energy, point
Not through front end impact protection circuit 10, the first current rectifying and wave filtering circuit 20, overvoltage crowbar 30, the second current rectifying and wave filtering circuit 40
And D.C. regulated power supply is obtained after DC-DC converter circuit 50.Simple structure of the present utility model, good stability, low cost
It is honest and clean, be easily installed, can be widely used in transmission line of electricity on-line monitoring field.
Above content is the further description made to this utility model with reference to specific preferred implementation, it is impossible to recognized
Fixed specific embodiment of the present utility model is confined to these explanations.For the common skill of this utility model art
For art personnel, the other embodiment drawn under without departing from the technical solution of the utility model should be included in practical
In new protection domain.
Claims (5)
1. a kind of high-voltage conducting wires energy obtaining system, it is characterised in that：Including front end impact protection circuit (10), the first rectifying and wave-filtering electricity
Road (20), overvoltage crowbar (30), the second current rectifying and wave filtering circuit (40) and DC-DC converter circuit (50), the front end
One end of impact protection circuit (10) is connected with taking energy coil, the outfan of front end impact protection circuit (10) is whole with described first
The input connection of stream filter circuit (20), the outfan connection overvoltage crowbar of first current rectifying and wave filtering circuit (20)
(30) input, the outfan of the overvoltage crowbar (30) connect the input of the second current rectifying and wave filtering circuit (40), institute
State the input of the second current rectifying and wave filtering circuit (40) outfan connection DC-DC converter circuit (50).
2. a kind of high-voltage conducting wires energy obtaining system as claimed in claim 1, it is characterised in that：First current rectifying and wave filtering circuit
(20) including the first operational amplifier (A1), the second operational amplifier (A2) and the 3rd operational amplifier (A3), described first
The negative signal input of operational amplifier (A1) connect one end of the 4th resistance (R4), the negative electrode of the second diode (D2), the
One end of five resistance (R5), an output of other end connection front end impact protection circuit (10) of the 4th resistance (R4)
End, one end of positive signal input connection second resistance (R2) of the first operational amplifier (A1), the second resistance (R2)
The other end, the positive electrical source of the first operational amplifier (A1), one end of 3rd resistor (R3) and front end surge protection electricity
Another outfan on road (10) is grounded, and the anode of second diode (D2) connects the letter of the first operational amplifier (A1)
The negative electrode of number outfan and the first diode (D1), the anode of first diode (D1) connect first resistor (R1) respectively
One end, the other end of the 5th resistance (R5), first operational amplifier (A1) negative electricity source connection power supply；Described
The other end of three resistance (R3) connects the positive signal input of the second operational amplifier (A2), the first resistor (R1) it is another
One end connects one end of the 6th resistance (R6), the negative signal input of the second operational amplifier (A2) respectively, and the described 6th is electric
The other end of resistance (R6) connects one end of the signal output part and the 7th resistance (R7) of the second operational amplifier (A2), institute respectively
State cathode power supply end ground connection, the negative electricity source connection power supply of the second operational amplifier (A2)；7th resistance (R7) it is another
One end connects one end of the 8th resistance (R8) and one end of the first electric capacity (C1), the other end of the 8th resistance (R8) respectively
Connect one end of the second electric capacity (C2) and the positive signal input of the 3rd operational amplifier (A3), second electric capacity respectively
(C2) other end ground connection, the negative signal input of the 3rd operational amplifier (A3) connect the one of the 9th resistance (R9) respectively
End, one end of the tenth resistance (R10), the other end ground connection of the 9th resistance (R9), the other end difference of the tenth resistance (R10)
Connect the other end, the signal output part of the 3rd operational amplifier (A3) and the overvoltage crowbar (30) of the first electric capacity (C1)
Input, the positive electrical source and negative electricity source of the 3rd operational amplifier (A3) are all connected with power supply.
3. a kind of high-voltage conducting wires energy obtaining system as claimed in claim 2, it is characterised in that：Second current rectifying and wave filtering circuit
(40) circuit structure is identical with the circuit structure of the first current rectifying and wave filtering circuit (20).
4. a kind of high-voltage conducting wires energy obtaining system as claimed in claim 3, it is characterised in that：The DC-DC converter circuit
(50) including the first chip (U1) and the second chip (U2), the pin 1 of first chip (U1) connects the 3rd diode respectively
(D3) anode and one end of the first inductance (L1), the negative electrode of the 3rd diode (D3) connect the one of the first electric capacity (C1)
End, one end of the 13rd resistance (R13) out-put supply, the other end of first electric capacity (C1) connect the first chip respectively
(U1) pin 2, the pin 4 of one end of the second electric capacity (C2) and the first chip (U1) are simultaneously grounded, second electric capacity (C2)
The other end connect the pin 3 of the first chip (U1), the other end of the 13rd resistance (R13) connects the 14th resistance respectively
(R14) one end and the pin 5 of the first chip (U1), the other end ground connection of the 14th resistance (R14), described first is electric
The other end of sense (L1) connects one end, one end of the 12nd resistance (R12) and first chip of the 11st resistance (R11) respectively
(U1) pin 7, the other end of the 11st resistance (R11) connect the pin 8 of the first chip (U1), the 12nd resistance
(R12) the other end connects the pin 6 of the first chip (U1), the pin 6 of the second chip (U2), the 15th resistance (R15) respectively
One end and the second current rectifying and wave filtering circuit (40) outfan, the other end of the 15th resistance (R15) connects second respectively
The pin 7 of chip (U2), pin 8, pin 1, the pin 5 of second chip (U2) connect the 16th resistance (R16) respectively
One end and one end of the 17th resistance (R17), the other end ground connection of the 17th resistance (R17), the 16th resistance
(R16) the other end connects the pin 3 of the second chip (U2), pin 4, one end of the 3rd electric capacity (C3), the 4th electric capacity respectively
(C4) one end out-put supply, the other end of the 3rd electric capacity (C3) connect the anode of the 4th diode (D4), and described the
The negative electrode of four diodes (D4) connects one end of the second inductance (L2) and the pin 2 of the second chip (U2), second inductance
(L2) the other end, the other end of the 4th electric capacity (C4) are grounded.
5. a kind of high-voltage conducting wires energy obtaining system as claimed in claim 4, it is characterised in that：First chip (U1) and second
The chip model of chip (U2) is MC34063.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621069824.5U CN206060234U (en) | 2016-09-22 | 2016-09-22 | A kind of high-voltage conducting wires energy obtaining system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621069824.5U CN206060234U (en) | 2016-09-22 | 2016-09-22 | A kind of high-voltage conducting wires energy obtaining system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060234U true CN206060234U (en) | 2017-03-29 |
Family
ID=58366860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621069824.5U Expired - Fee Related CN206060234U (en) | 2016-09-22 | 2016-09-22 | A kind of high-voltage conducting wires energy obtaining system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206060234U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857604A (en) * | 2021-01-18 | 2021-05-28 | 大力电工襄阳股份有限公司 | Wireless high-precision high-voltage silicon controlled rectifier temperature detection device |
-
2016
- 2016-09-22 CN CN201621069824.5U patent/CN206060234U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112857604A (en) * | 2021-01-18 | 2021-05-28 | 大力电工襄阳股份有限公司 | Wireless high-precision high-voltage silicon controlled rectifier temperature detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101697430B (en) | Power control method based CT electricity getting device of high voltage transmission line | |
| CN201185355Y (en) | High voltage line induction electricity-taking apparatus | |
| CN101478183B (en) | Apparatus and method for obtaining electricity from high voltage electric cable | |
| CN203761280U (en) | Lightning-proof power adapter circuit | |
| CN103326325A (en) | Short-circuit and low-voltage protective circuit of output of switching power source | |
| CN202676816U (en) | Photoelectric coupling device, photoelectric isolation detection circuit and notification circuit | |
| CN207354054U (en) | The electric power system of online power equipment monitoring system | |
| CN101867231A (en) | High-voltage side mutual inductance energy-acquiring device of high-voltage power transmission line | |
| CN208257654U (en) | A kind of photovoltaic DC-to-AC converter high pressure BUS soft-start circuit | |
| CN108429472B (en) | A kind of self-starting of power generation with marine energy and self-powered energy collection circuit | |
| CN104269898B (en) | Charging unit of super capacitor | |
| CN101635523A (en) | External mining intrinsic safety power supply | |
| CN206060234U (en) | A kind of high-voltage conducting wires energy obtaining system | |
| CN208158141U (en) | A kind of high-tension line PT electricity getting device | |
| CN106849003A (en) | A kind of AC network safety electricity consumption protector | |
| CN103647447B (en) | The supply unit of a kind of electric energy table communication module | |
| CN201418038Y (en) | External intrinsic safety power supply for mining use | |
| CN103475074B (en) | Unloaded low-loss battery charger | |
| CN203734382U (en) | High voltage CT self-power hardware platform | |
| CN2579075Y (en) | IGCT driving power supply | |
| CN204794684U (en) | Electric current bypass and CCCV main circuit of constant voltage circuit are changeed in single line constant current | |
| CN207218558U (en) | A kind of power-supply system of intelligent electric meter | |
| CN203312774U (en) | Short-circuit and low-voltage protective circuit of output of switching power source | |
| CN204794074U (en) | Constant voltage source among electric current voltage conversion circuit makes can circuit | |
| CN106100122A (en) | Chopper data acquisition controller and the control method to chopper thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20170922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |