CN203984266U - A kind of high-voltage switch power supply - Google Patents
A kind of high-voltage switch power supply Download PDFInfo
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- CN203984266U CN203984266U CN201420395539.7U CN201420395539U CN203984266U CN 203984266 U CN203984266 U CN 203984266U CN 201420395539 U CN201420395539 U CN 201420395539U CN 203984266 U CN203984266 U CN 203984266U
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Abstract
The utility model relates to switch power technology field, be particularly related to a kind of high-voltage switch power supply, it comprises input voltage HV, drive circuit, partial pressure filter circuit, the prime power loop of equalizer circuit and at least two series connection, the utility model carries out dividing potential drop by partial pressure filter circuit to input voltage, dividing potential drop electric capacity and switching tube form at least two prime power loops, for a switching tube, when closing, its voltage bearing is the voltage on this electric capacity, secondary reflection voltage and the due to voltage spikes sum causing due to transformer T2 leakage inductance, due to the voltage on this electric capacity, to be input voltage 1/2 even less, greatly reduce the crest voltage of a switching tube, therefore, can use withstand voltage low switching tube, reduced cost, because at least two prime power loops share a transformer T2, use a plurality of transformers to compare with prior art, its parameter is consistent, and inductance value is consistent, can make busbar voltage balance, improves reliability.
Description
Technical field
The utility model relates to Switching Power Supply, particularly a kind of high-voltage switch power supply.
Background technology
Conventionally, power electronic system often will use high voltage, and control system needs to use low-voltage direct, and this just need to convert high voltage to low-voltage by high-voltage switch power supply and offer control system and use.Due to input voltage high (being generally 1000V-2000V), existing high-voltage switch power supply is generally realized on-off action with double-transistor flyback or double tube positive exciting, and the withstand voltage of switching tube of using need to be also higher than input voltage, such as: for the input voltage of 2000V, at least need to use switching tube more than 2000V, and high voltage bearing switching tube price is more expensive, and be difficult for buying.
Summary of the invention
The purpose of this utility model is to provide a kind of high-voltage switch power supply, and this high-voltage switch power supply can be used the switching tube of resistance to low pressure, has reduced cost, can make busbar voltage balance, improves reliability.
Provide a kind of high-voltage switch power supply for this reason, the prime power loop that comprises input voltage HV, drive circuit, partial pressure filter circuit, equalizer circuit and at least two series connection, the prime power loop of at least two series connection is connected between described input voltage HV and ground, in the utility model
Described drive circuit is driving transformer T1, described driving transformer T1 comprises a plurality of secondary winding, described high-voltage switch power supply also comprises single transformer T2 and a plurality of switching tube with resistance, described transformer T2 comprises a plurality of armature windings, described partial pressure filter circuit comprises the electric capacity of a plurality of series connection, and described equalizer circuit comprises a plurality of grading resistors; The quantity of the armature winding of the quantity of the secondary winding of described transformer T1, described transformer T2, the quantity of switching tube, the quantity of electric capacity, the quantity of grading resistor are all identical with the quantity in described prime power loop, a described resistance and a described Capacitance parallel connection;
Described in each, prime power loop comprises: the armature winding of an electric capacity, a transformer T2 and a switching tube, the resistance of described switching tube is connected with one end of a secondary winding of described transformer T1, one end of the armature winding of one end connection transformer T2 of described electric capacity, the other end of the armature winding of described transformer T2 is connected with the drain electrode of described switching tube, and the source electrode of described switching tube is connected with one end of the armature winding of the transformer T2 in the other end of the secondary winding of the other end of described electric capacity, described transformer T1, next prime power loop.
Concrete, described transformer T1 comprises secondary winding N2, secondary winding N3, secondary winding N4 and secondary winding N5, described transformer T2 comprises armature winding N6, armature winding N7, armature winding N8 and armature winding N9.
Concrete, described prime power loop comprises four, is respectively the first prime power loop, the second prime power loop, the 3rd prime power loop and the 4th prime power loop.
Concrete, described the first prime power loop comprises armature winding N6, the switching tube Q1 of capacitor C 1, transformer T2 and the resistance R8 of switching tube Q1; Described the second prime power loop comprises armature winding N7, the switching tube Q2 of capacitor C 2, transformer T2 and the resistance R6 of switching tube Q2; Described the 3rd prime power loop comprises armature winding N8, the switching tube Q3 of capacitor C 3, transformer T2 and the resistance R9 of switching tube Q13; Described the 4th prime power loop comprises armature winding N9, the switching tube Q4 of capacitor C 4, transformer T2 and the resistance R14 of switching tube Q4;
One end of described secondary winding N2 is connected with described resistance R14, one end of described secondary winding N3 is connected with described resistance R9, one end of described secondary winding N4 is connected with described resistance R6, and one end of described secondary winding N5 is connected with described resistance R8;
The other end of described secondary winding N2 is connected with the source electrode of described switching tube Q4, the other end of described secondary winding N3 is connected with the source electrode of described switching tube Q3, the other end of described secondary winding N4 is connected with the source electrode of described switching tube Q2, and the other end of described secondary winding N5 is connected with the source electrode of described switching tube Q1.
Concrete, described equalizer circuit comprises resistance R 1, resistance R 2, resistance R 3 and resistance R 4.
Concrete, described transformer T1 comprises armature winding N1, described transformer T2 comprises secondary winding N10 and N11.
Concrete, also comprise secondary power output loop, it comprises secondary winding N10, diode D1, capacitor C 8 and the output voltage VO 1 of described transformer T2, one end of secondary winding N10 is connected with the positive pole of diode D1, the negative pole of diode D1 is connected with the positive pole of output voltage VO 1, capacitor C 8, the other end of the negative pole of capacitor C 8 and secondary winding N10, be connected.
Concrete, also comprising control circuit, described control circuit comprises chip U1, resistance R 5, resistance R 7, resistance R 12, resistance R 17, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 9, capacitor C 11, triode Q5 and triode Q6, the VRF pin of described chip U1 and one end of resistance R 5, one end of capacitor C 5 is connected with power supply Vref, the RTCT pin of the other end of resistance R 5 and chip U1, one end of capacitor C 6 connects, the other end of capacitor C 5, the other end ground connection of capacitor C 6, the VCC pin of chip U1 and one end of resistance R 17, one end of capacitor C 11, power supply VCC connects, input voltage HV described in another termination of resistance R 17, and the other end ground connection of capacitor C 11, the OUT pin of chip U1 is connected with one end of resistance R 12, the base stage of the other end of resistance R 12 and triode Q5, the base stage of triode Q6 connects, and the collector electrode of triode Q5 is connected with power supply VCC, the emitter of the emitter of triode Q5 and triode Q6, one end of capacitor C 9 connects, one end of the armature winding N1 of the other end of capacitor C 9 and transformer T1, the other end of the armature winding N1 of described transformer T1 and the collector electrode of described triode Q6, ground connects,
Concrete, the COM pin of chip U1 is connected to isolation feedback circuit, it comprises resistance R 10, resistance R 11, resistance R 13, resistance R 15, optocoupler U2 and three end adjustable reference source U3, one end of resistance R 11 is connected with power supply Vref, the other end of resistance R 11 is connected with the collector electrode of the light-receiving device of optocoupler U2 with the COM pin of chip U1, the grounded emitter of the light-receiving device of optocoupler U2, the anode of the photophore of optocoupler U2 is connected with one end of resistance R 10, the other end of resistance R 10 and output voltage VO 1, one end of resistance R 13 connects, the control end of the other end of resistance R 13 and three end adjustable reference source U3, one end of resistance R 15 connects, the positive pole of the other end of resistance R 15 and three end adjustable reference source U3, ground connects, the negative pole of three end adjustable reference source U3 is connected with the negative electrode of the photophore of optocoupler U2.
Concrete, also comprise output power loop, it comprises secondary winding N11, diode D2, capacitor C 10 and the power supply VCC of described transformer T2, one end of secondary winding N11 is connected with the positive pole of diode D2, the negative pole of diode D2 is connected with positive pole, the power supply VCC of capacitor C 10, the other end of the negative pole of capacitor C 10 and secondary winding N11, be connected.
Beneficial effect: the utility model carries out dividing potential drop by partial pressure filter circuit to input voltage, dividing potential drop electric capacity forms at least two prime power loops with switching tube again, driving transformer T1 is for the opening and closing through the different switching tubes of isolation rear drive by the control signal receiving, the opening and closing simultaneously of different switching tubes, for a switching tube, when closing, its voltage bearing is the voltage on this electric capacity, secondary reflection voltage and the due to voltage spikes sum causing due to transformer T2 leakage inductance, due to the voltage on this electric capacity, to be input voltage 1/2 even less, greatly reduce the crest voltage of a switching tube, therefore, the utility model can be used withstand voltage low switching tube, reduced cost, in addition, because at least two prime power loops share a transformer T2, use a plurality of transformers to compare with prior art, its parameter is consistent, and inductance value is consistent, and the electric voltage equalization of winding can make busbar voltage balance, improves reliability.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of an embodiment of the present utility model.
In figure, include:
1---control circuit, 11---isolation feedback circuit;
2---drive circuit;
3---equalizer circuit;
4---partial pressure filter circuit;
5---the first prime power loop;
6---the second prime power loop;
7---the 3rd prime power loop;
8---the 4th prime power loop;
9---secondary power output loop;
10---output power loop.
Embodiment
A kind of high-voltage switch power supply of the present embodiment, as shown in Figure 1, comprise input voltage HV, drive circuit 2, partial pressure filter circuit 4, the prime power loop of equalizer circuit 3 and four series connection, drive circuit 2 is driving transformer T1, driving transformer T1 comprises an armature winding and four secondary winding, respectively armature winding N1, secondary winding N2, secondary winding N3, secondary winding N4 and secondary winding N5, high-voltage switch power supply also comprises transformer T2 and four switching tubes with resistance, transformer T2 comprises four armature windings and two secondary winding, respectively armature winding N6, armature winding N7, armature winding N8, armature winding N9, secondary winding N10 and secondary winding N11, switching tube is respectively the field effect transistor Q1 with resistance R8, field effect transistor Q2 with resistance R6, with the field effect transistor Q3 of resistance R9 with the field effect transistor Q4 of resistance R14.
Partial pressure filter circuit 4 comprises capacitor C 1, capacitor C 2, capacitor C 3 and the capacitor C 4 of series connection, equalizer circuit 3 comprises resistance R 1, resistance R 2, resistance R 3 and the resistance R 4 that resistance is equal, resistance R 1 and some C1 are in parallel, resistance R 2 and capacitor C 2 parallel connections, resistance R 3 and capacitor C 3 parallel connections, resistance R 4 and capacitor C 4 parallel connections.
Capacitor C 1, capacitor C 2, capacitor C 3 and capacitor C 4 play filtering and dividing potential drop, resistance R 1, resistance R 2, resistance R 3 and resistance R 4 are grading resistor, resistance equates, is used for guaranteeing that the voltage of capacitor C 1, capacitor C 2, capacitor C 3 and capacitor C 4 is tending towards equal, equals 1/4 of input voltage.
The prime power loop of four series connection is connected between described input voltage HV and ground, and the prime power loop of four series connection is respectively the first prime power loop 5, the second prime power loop 6, the 3rd prime power loop 7 and the 4th prime power loop 8.
The first prime power loop 5 comprises armature winding N6, the field effect transistor Q1 of capacitor C 1, transformer T2 and the resistance R8 of field effect transistor Q1, one end of capacitor C 1 is connected with one end of the armature winding N6 of input voltage HV, transformer T2, the other end of the armature winding N6 of transformer T2 is connected with the drain electrode of field effect transistor Q1, the source electrode of field effect transistor Q1 is connected with the other end of capacitor C 1, one end of the secondary winding N5 of transformer T1, and the other end of the secondary winding N5 of transformer T1 is connected with the resistance R8 of field effect transistor Q1;
Described the second prime power loop 6 comprises armature winding N7, the field effect transistor Q2 of capacitor C 2, transformer T2 and the resistance R6 of field effect transistor Q2, one end of capacitor C 2 is connected with the source electrode of field effect transistor Q1, one end of the armature winding N7 of transformer T2, the other end of the armature winding N7 of transformer T2 is connected with the drain electrode of field effect transistor Q2, the source electrode of field effect transistor Q2 is connected with the other end of capacitor C 2, one end of the secondary winding N4 of transformer T1, and the other end of the secondary winding N4 of transformer T1 is connected with the resistance R6 of field effect transistor Q2;
Described the 3rd prime power loop 7 comprises armature winding N8, the field effect transistor Q3 of capacitor C 3, transformer T2 and the resistance R9 of field effect transistor Q13, one end of capacitor C 3 is connected with the source electrode of field effect transistor Q2, one end of the armature winding N8 of transformer T2, the other end of the armature winding N8 of transformer T2 is connected with the drain electrode of field effect transistor Q3, the source electrode of field effect transistor Q3 is connected with the other end of capacitor C 3, one end of the secondary winding N3 of transformer T1, and the other end of the secondary winding N3 of transformer T1 is connected with the resistance R9 of field effect transistor Q3;
Described the 4th prime power loop 8 comprises armature winding N9, the field effect transistor Q4 of capacitor C 4, transformer T2 and the resistance R14 of field effect transistor Q4, one end of capacitor C 4 is connected with the source electrode of field effect transistor Q3, one end of the armature winding N9 of transformer T2, the other end of the armature winding N9 of transformer T2 is connected with the drain electrode of field effect transistor Q4, the source electrode of field effect transistor Q4 is connected with one end of the secondary winding N2 of capacitor C 4, transformer T1 by resistance R 16, and the other end of the secondary winding N2 of transformer T1 is connected with the resistance R14 of field effect transistor Q4.
For field effect transistor Q1, when closing, its voltage bearing is voltage in capacitor C 1, secondary reflection voltage and the due to voltage spikes sum that causes due to transformer T2 leakage inductance, because the voltage in capacitor C 1 is 1/4 of input voltage HV, greatly reduce the crest voltage of field effect transistor Q1, input voltage for 2000V, adopt the field effect transistor of 600V, situation and the Q1 of field effect transistor Q2, Q3, Q4 are similar, therefore, the utility model can be used withstand voltage low field effect transistor, has reduced cost; In addition, because four prime power loops share a transformer T2, therefore, its parameter is consistent, and inductance value is consistent, and the electric voltage equalization of winding can make busbar voltage balance, improves reliability.
One end of described secondary winding N2 is connected with described resistance R14, one end of described secondary winding N3 is connected with described resistance R9, one end of described secondary winding N4 is connected with described resistance R6, and one end of described secondary winding N5 is connected with described resistance R8;
The other end of described secondary winding N2 is connected with the source electrode of described field effect transistor Q4, the other end of described secondary winding N3 is connected with the source electrode of described field effect transistor Q3, the other end of described secondary winding N4 is connected with the source electrode of described field effect transistor Q2, and the other end of described secondary winding N5 is connected with the source electrode of described field effect transistor Q1.
Concrete, also comprise secondary power output loop 9, it comprises secondary winding N10, diode D1, capacitor C 8 and the output voltage VO 1 of described transformer T2, one end of secondary winding N10 is connected with the positive pole of diode D1, the negative pole of diode D1 is connected with the positive pole of output voltage VO 1, capacitor C 8, the other end of the negative pole of capacitor C 8 and secondary winding N10, be connected.
Concrete, also comprising the control circuit 1 that produces described control signal, described control circuit 1 comprises chip U1, resistance R 5, resistance R 7, resistance R 12, resistance R 17, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 9, capacitor C 11, triode Q5 and triode Q6, the VRF pin of described chip U1 and one end of resistance R 5, one end of capacitor C 5 is connected with power supply Vref, the RTCT pin of the other end of resistance R 5 and chip U1, one end of capacitor C 6 connects, the other end of capacitor C 5, the other end ground connection of capacitor C 6, the VCC pin of chip U1 and one end of resistance R 17, one end of capacitor C 11, power supply VCC connects, input voltage HV described in another termination of resistance R 17, and the other end ground connection of capacitor C 11, the OUT pin of chip U1 is connected with one end of resistance R 12, the base stage of the other end of resistance R 12 and triode Q5, the base stage of triode Q6 connects, and the collector electrode of triode Q5 is connected with power supply VCC, the emitter of the emitter of triode Q5 and triode Q6, one end of capacitor C 9 connects, one end of the armature winding N1 of the other end of capacitor C 9 and transformer T1, the other end of the armature winding N1 of described transformer T1 and the collector electrode of described triode Q6, ground connects,
The COM pin of chip U1 is connected to isolation feedback circuit 11, it comprises resistance R 10, resistance R 11, resistance R 13, resistance R 15, optocoupler U2 and three end adjustable reference source U3, one end of resistance R 11 is connected with power supply Vref, the other end of resistance R 11 is connected with the collector electrode of the light-receiving device of optocoupler U2 with the COM pin of chip U1, the grounded emitter of the light-receiving device of optocoupler U2, the anode of the photophore of optocoupler U2 is connected with one end of resistance R 10, the other end of resistance R 10 and output voltage VO 1, one end of resistance R 13 connects, the control end of the other end of resistance R 13 and three end adjustable reference source U3, one end of resistance R 15 connects, the positive pole of the other end of resistance R 15 and three end adjustable reference source U3, ground connects, the negative pole of three end adjustable reference source U3 is connected with the negative electrode of the photophore of optocoupler U2.
Control chip U1 is used for regulating PWM duty ratio according to output voltage and power output, to guarantee the stable of output voltage VO 1.Isolation feedback circuit 11 is for passing to control chip U1 by the error signal of output voltage VO 1.
Concrete, the VCC output power loop 10 that also comprises control chip U1, it comprises secondary winding N11, diode D2, capacitor C 10 and the power supply VCC of transformer T2, one end of secondary winding N11 is connected with the positive pole of diode D2, the negative pole of diode D2 is connected with positive pole, the power supply VCC of capacitor C 10, the other end of the negative pole of capacitor C 10 and secondary winding N11, be connected.
Claims (9)
1. a high-voltage switch power supply, comprises the prime power loop of input voltage HV, drive circuit, partial pressure filter circuit, equalizer circuit and at least two series connection, and the prime power loop of at least two series connection is connected between described input voltage HV and ground, it is characterized in that:
Described drive circuit is driving transformer T1, described driving transformer T1 comprises a plurality of secondary winding, described high-voltage switch power supply also comprises single transformer T2 and a plurality of switching tube with resistance, described transformer T2 comprises a plurality of armature windings, described partial pressure filter circuit comprises the electric capacity of a plurality of series connection, and described equalizer circuit comprises a plurality of grading resistors; The quantity of the armature winding of the quantity of the secondary winding of described transformer T1, described transformer T2, the quantity of switching tube, the quantity of electric capacity, the quantity of grading resistor are all identical with the quantity in described prime power loop, a described resistance and a described Capacitance parallel connection;
Described in each, prime power loop comprises: the armature winding of an electric capacity, a transformer T2 and a switching tube, the resistance of described switching tube is connected with one end of a secondary winding of described transformer T1, one end of the armature winding of one end connection transformer T2 of described electric capacity, the other end of the armature winding of described transformer T2 is connected with the drain electrode of described switching tube, and the source electrode of described switching tube is connected with one end of the armature winding of the transformer T2 in the other end of the secondary winding of the other end of described electric capacity, described transformer T1, next prime power loop.
2. a kind of high-voltage switch power supply according to claim 1, it is characterized in that, described transformer T1 comprises secondary winding N2, secondary winding N3, secondary winding N4 and secondary winding N5, and described transformer T2 comprises armature winding N6, armature winding N7, armature winding N8 and armature winding N9.
3. a kind of high-voltage switch power supply according to claim 2, is characterized in that, described prime power loop comprises four, is respectively the first prime power loop, the second prime power loop, the 3rd prime power loop and the 4th prime power loop.
4. a kind of high-voltage switch power supply according to claim 3, is characterized in that, described the first prime power loop comprises armature winding N6, the switching tube Q1 of capacitor C 1, transformer T2 and the resistance R8 of switching tube Q1; Described the second prime power loop comprises armature winding N7, the switching tube Q2 of capacitor C 2, transformer T2 and the resistance R6 of switching tube Q2; Described the 3rd prime power loop comprises armature winding N8, the switching tube Q3 of capacitor C 3, transformer T2 and the resistance R9 of switching tube Q13; Described the 4th prime power loop comprises armature winding N9, the switching tube Q4 of capacitor C 4, transformer T2 and the resistance R14 of switching tube Q4;
One end of described secondary winding N2 is connected with described resistance R14, one end of described secondary winding N3 is connected with described resistance R9, one end of described secondary winding N4 is connected with described resistance R6, and one end of described secondary winding N5 is connected with described resistance R8;
The other end of described secondary winding N2 is connected with the source electrode of described switching tube Q4, the other end of described secondary winding N3 is connected with the source electrode of described switching tube Q3, the other end of described secondary winding N4 is connected with the source electrode of described switching tube Q2, and the other end of described secondary winding N5 is connected with the source electrode of described switching tube Q1.
5. a kind of high-voltage switch power supply according to claim 4, is characterized in that, described equalizer circuit comprises resistance R 1, resistance R 2, resistance R 3 and resistance R 4.
6. a kind of high-voltage switch power supply according to claim 5, is characterized in that, described transformer T1 comprises armature winding N1, and described transformer T2 comprises secondary winding N10 and N11.
7. a kind of high-voltage switch power supply according to claim 6, it is characterized in that, also comprise secondary power output loop, it comprises secondary winding N10, diode D1, capacitor C 8 and the output voltage VO 1 of described transformer T2, one end of secondary winding N10 is connected with the positive pole of diode D1, the negative pole of diode D1 is connected with the positive pole of output voltage VO 1, capacitor C 8, the other end of the negative pole of capacitor C 8 and secondary winding N10, be connected.
8. a kind of high-voltage switch power supply according to claim 7, is characterized in that, also comprises control circuit, and described control circuit comprises chip U1, resistance R 5, resistance R 7, resistance R 12, resistance R 17, capacitor C 5, capacitor C 6, capacitor C 7, capacitor C 9, capacitor C 11, triode Q5 and triode Q6, the VRF pin of described chip U1 and one end of resistance R 5, one end of capacitor C 5 is connected with power supply Vref, the RTCT pin of the other end of resistance R 5 and chip U1, one end of capacitor C 6 connects, the other end of capacitor C 5, the other end ground connection of capacitor C 6, the VCC pin of chip U1 and one end of resistance R 17, one end of capacitor C 11, power supply VCC connects, input voltage HV described in another termination of resistance R 17, and the other end ground connection of capacitor C 11, the OUT pin of chip U1 is connected with one end of resistance R 12, the base stage of the other end of resistance R 12 and triode Q5, the base stage of triode Q6 connects, and the collector electrode of triode Q5 is connected with power supply VCC, the emitter of the emitter of triode Q5 and triode Q6, one end of capacitor C 9 connects, one end of the armature winding N1 of the other end of capacitor C 9 and transformer T1, the other end of the armature winding N1 of described transformer T1 and the collector electrode of described triode Q6, ground connects,
A kind of high-voltage switch power supply according to claim 8, it is characterized in that, the COM pin of described chip U1 is connected to isolation feedback circuit, it comprises resistance R 10, resistance R 11, resistance R 13, resistance R 15, optocoupler U2 and three end adjustable reference source U3, one end of resistance R 11 is connected with power supply Vref, the other end of resistance R 11 is connected with the collector electrode of the light-receiving device of optocoupler U2 with the COM pin of chip U1, the grounded emitter of the light-receiving device of optocoupler U2, the anode of the photophore of optocoupler U2 is connected with one end of resistance R 10, the other end of resistance R 10 and output voltage VO 1, one end of resistance R 13 connects, the control end of the other end of resistance R 13 and three end adjustable reference source U3, one end of resistance R 15 connects, the positive pole of the other end of resistance R 15 and three end adjustable reference source U3, ground connects, the negative pole of three end adjustable reference source U3 is connected with the negative electrode of the photophore of optocoupler U2.
9. a kind of high-voltage switch power supply according to claim 8, it is characterized in that, also comprise output power loop, it comprises secondary winding N11, diode D2, capacitor C 10 and the power supply VCC of described transformer T2, one end of secondary winding N11 is connected with the positive pole of diode D2, the negative pole of diode D2 is connected with positive pole, the power supply VCC of capacitor C 10, the other end of the negative pole of capacitor C 10 and secondary winding N11, be connected.
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| CN201420395539.7U CN203984266U (en) | 2014-07-17 | 2014-07-17 | A kind of high-voltage switch power supply |
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| CN201420395539.7U CN203984266U (en) | 2014-07-17 | 2014-07-17 | A kind of high-voltage switch power supply |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130328A (en) * | 2016-08-20 | 2016-11-16 | 嘉兴国电通新能源科技有限公司 | A kind of double-tube series inverse-excitation type switch power-supply |
| CN108173431A (en) * | 2016-12-07 | 2018-06-15 | 特变电工新疆新能源股份有限公司 | High voltage direct current based on synchronous conducting technology takes can converter |
| CN108472482A (en) * | 2015-12-28 | 2018-08-31 | 艾诺奥医药品有限公司 | electroporation device with improved signal generator |
| CN110417271A (en) * | 2019-07-24 | 2019-11-05 | 珠海银河耐吉科技股份有限公司 | A kind of photovoltaic DC-to-AC converter driving circuit |
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2014
- 2014-07-17 CN CN201420395539.7U patent/CN203984266U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108472482A (en) * | 2015-12-28 | 2018-08-31 | 艾诺奥医药品有限公司 | electroporation device with improved signal generator |
| CN106130328A (en) * | 2016-08-20 | 2016-11-16 | 嘉兴国电通新能源科技有限公司 | A kind of double-tube series inverse-excitation type switch power-supply |
| CN108173431A (en) * | 2016-12-07 | 2018-06-15 | 特变电工新疆新能源股份有限公司 | High voltage direct current based on synchronous conducting technology takes can converter |
| CN108173431B (en) * | 2016-12-07 | 2022-06-24 | 特变电工新疆新能源股份有限公司 | High-voltage direct-current energy-taking converter based on synchronous conduction technology |
| CN110417271A (en) * | 2019-07-24 | 2019-11-05 | 珠海银河耐吉科技股份有限公司 | A kind of photovoltaic DC-to-AC converter driving circuit |
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