CN203691283U

CN203691283U - Isolation-control bipolar high-frequency high-voltage pulse power supply circuit

Info

Publication number: CN203691283U
Application number: CN201320841170.3U
Authority: CN
Inventors: 刘申; 李然; 周末梦
Original assignee: TIANJIN DONGWEN HIGH VOLTAGE POWER SUPPLY PLANT
Current assignee: TIANJIN DONGWEN HIGH VOLTAGE POWER SUPPLY PLANT
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2014-07-02
Anticipated expiration: 2023-12-19

Abstract

The utility model relates to an isolation-control bipolar high-frequency high-voltage pulse power supply circuit. An output pulse switching circuit is connected with an isolation high voltage and floating auxiliary power supply circuit and a square wave generation and pulse isolation control circuit; for the isolation high voltage and suspension auxiliary power supply part, a main control chip U1 is a 7555 time-base circuit; an astable multivibrator circuit formed by the main control chip U1 generates an isolation high voltage and a plurality of groups of floating auxiliary voltages through conversion. For the square wave generation and pulse isolation control part, in addition to the model 7555 control chip U5 adopts a 7555 time-base circuit, a control chip U4 adopts a TLP627-4 four-channel photoelectric coupler which is short in response time, high in current transmission ratio and high in isolation withstand voltage; as a result, the high-performance isolation control is ensured; finally, an output pulse switch is driven through a full bridge to obtain completely isolation bipolar high-frequency high-voltage pulse output. The complete isolation-control bipolar high-frequency high-voltage square-wave pulse output is realized; output pulses are wide in frequency range and good in waveform; and therefore, the pulse frequency can be regulated within a certain range.

Description

A kind of isolated controlling bipolarity high-frequency and high-voltage impulse power supply circuit

Technical field

The utility model relates to a kind of isolated controlling bipolarity high-frequency and high-voltage impulse power supply circuit for instrument and equipments such as Fibre Optical Sensor, charging device, measuring instrument, environmental monitorings in the field such as electronics industry and environmental protection.

Background technology

Along with scientific and technological development, the application of high-frequency and high-voltage impulse power supply is more and more extensive, except unipolar pulse output, market is increasing to the demand of bipolar pulse output, not only require fast response time, repetition rate high, and require there is higher output pulse amplitude, and input and output are isolated completely.For reaching index of correlation requirement, it is larger that this type of pulse power is often made volume, cost is high, conversion efficiency and reliability lower, be difficult for Miniaturization Design.

Summary of the invention

In view of the deficiency of existing conditions of demand and existence, the utility model provides a kind of output pulse frequency wide ranges, fast response time, the simple isolated controlling bipolarity of circuit structure high-frequency and high-voltage impulse power supply circuit.

The utility model for achieving the above object, the technical scheme of taking is: a kind of isolated controlling bipolarity high-frequency and high-voltage impulse power supply circuit, it is characterized in that: comprise isolated high-voltage and suspension auxiliary electric power supply circuit, square wave generation and impulsive quarantine control circuit, output pulse-switching circuit, described output pulse-switching circuit is respectively with isolated high-voltage and suspension auxiliary electric power supply circuit, square wave produces and impulsive quarantine control circuit is connected;

In described isolated high-voltage and suspension auxiliary electric power supply circuit, trigger end 2 pin of control chip U1 are connected with threshold value end 6 pin and distinguish one end of connecting resistance R2 and capacitor C 4, discharge end 7 pin one end of connecting resistance R1 respectively of control chip U1, the other end of resistance R 2, the positive pole of capacitor C 3 is connected with the negative pole of diode D1, the negative pole of capacitor C 3 is connected with the positive pole of diode D1 and meets input ground GND, one end of difference connecting resistance R3 after feeder ear 8 pin of control chip U1 are connected with forced resetting end 4 pin, the other end of resistance R 1, the positive pole of capacitor C 3, the collector electrode of photoelectrical coupler U2 output triode, the other end of resistance R 3 connects respectively one end of inductance L 1, anodal and the conduct input feeder ear+Vin of capacitor C 2, the other end of inductance L 1 connects respectively the positive pole of capacitor C 1, Same Name of Ends 1 pin of transformer TRF primary coil Lp, the negative pole of capacitor C 1 and C2 meets input ground GND, different name end 2 pin one end of connecting resistance R9 respectively of transformer TRF primary coil Lp, the drain electrode of triode T5, the other end of resistance R 9 meets input ground GND by capacitor C 7, resistance R 4 is in parallel with diode D2, output 3 pin of control chip U1 connect the negative pole of diode D2, the positive pole of diode D2 connects the grid of triode T5, resistance R 7 and R8 are in parallel with capacitor C 6, the source electrode difference connecting resistance R6 of triode T5 and one end of resistance R 8, the other end of resistance R 6 connects respectively the base stage of triode T6, one end of resistance R 5, the emitter of another termination photoelectrical coupler U2 output triode of resistance R 5, voltage controling end 5 pin of control chip U1 connect respectively one end of capacitor C 5, the collector electrode of triode T6, the emitter of triode T6 respectively with the other end of capacitor C 5 and C4, the other end of resistance R 8, and earth terminal 1 pin of control chip U1 is connected afterwards and meets input ground GND, different name end 3 pin of the secondary coil Ls4 of transformer TRF connect respectively the positive pole of diode D3 and the negative pole of diode D4, the negative pole difference connecting resistance R10 of diode D3 and one end of capacitor C 8, the positive pole of diode D4 meets isolator G1 and draws this end after being connected with one end of capacitor C 9 and C10 respectively, the other end of capacitor C 8 and C9 is connected and connects Same Name of Ends 4 pin of transformer TRF secondary coil Ls4, one end of resistance R 11 is connected with the other end of capacitor C 10 with resistance R 10 respectively and as isolated high-voltage output+HV, different name end 5 pin of the secondary coil Ls5 of transformer TRF connect the positive pole of diode D5, capacitor C 11 is in parallel with resistance R 16, the negative pole of diode D5 connects respectively the positive pole of capacitor C 11, one end of resistance R 15, the positive pole of photoelectrical coupler U2 input diode, the negative pole of photoelectrical coupler U2 input diode connects respectively one end of capacitor C 12 by resistance R 14, the other end of resistance R 15, the negative electrode of control chip U3, the other end of resistance R 11 connects respectively one end of variable resistor R28 by resistance R 12, the other end of capacitor C 12, the control end R of control chip U3, one end of the other end connecting resistance R13 of variable resistor R28, the anode A of control chip U3 respectively with the other end of resistance R 13, the negative pole of capacitor C 11, Same Name of Ends 6 pin of transformer secondary output coil Ls5 are connected and meet G1 isolator, different name end 7 pin of the secondary coil Ls1 of transformer connect the positive pole of diode D6, resistance R 17 is in parallel with capacitor C 13, also draw as the 1 feeder ear+V1 that suspends one end of the negative pole connecting resistance R17 of diode D6, the Same Name of Ends of transformer secondary output coil Ls1 meets G1 isolator after being connected with the other end of resistance R 17, different name end 8 pin of the secondary coil Ls2 of transformer connect the positive pole of diode D7, resistance R 18 is in parallel with capacitor C 14, also draw as the 2 feeder ears+V2 that suspends one end of the negative pole connecting resistance R18 of diode D7, after being connected with the other end of resistance R 18, Same Name of Ends 9 pin of transformer secondary output coil Ls2 draw as the 2 ground G2 that suspend, different name end 10 pin of the secondary coil Ls3 of transformer connect the positive pole of diode D8, resistance R 19 is in parallel with capacitor C 15, also draw as the 3 feeder ears+V3 that suspends one end of the negative pole connecting resistance R19 of diode D8, after being connected with the other end of resistance R 19, Same Name of Ends 11 pin of transformer secondary output coil Ls3 draw as the 3 ground G3 that suspend,

In described square wave generation and impulsive quarantine control circuit, trigger end 2 pin of control chip U5 are connected with threshold value end 6 pin and connect respectively one end of variable resistor R29 and capacitor C 16, one end of the other end connecting resistance R24 of variable resistor R29, voltage controling end 5 pin of control chip U5 meet input ground GND after being connected with the other end of capacitor C 16 and earth terminal 1 pin of control chip U5 respectively by capacitor C 17, feeder ear 8 pin of control chip U5 are connected with forced resetting end 4 pin, and meet input feeder ear+Vin after being connected with the collector electrode of triode T7, after being connected, the base stage of triode T7 and T8 connects output 3 pin of control chip U5, the collector electrode of triode T8 meets input ground GND, resistance R 25 is in parallel with capacitor C 18, one end of difference connecting resistance R25 after the emitter of triode T7 and T8 is connected, the other end of resistance R 24, the base stage of another termination triode T9 of resistance R 25, the emitter of triode T9 connects input ground, the collector electrode of triode T9 connects respectively the negative pole of diode D9, 8 pin of four-way photoelectrical coupler chip U4, one end of resistance R 26 and R27 is connected and meets input feeder ear+Vin, the positive pole of diode D9 is the other end of connecting resistance R26 respectively, 1 pin of four-way photoelectrical coupler chip U4, 5 pin of another termination four-way photoelectrical coupler chip U4 of resistance R 27, 2 pin of four-way photoelectrical coupler chip U4 are connected with 3 pin, 6 pin of four-way photoelectrical coupler chip U4 are connected with 7 pin, 4 pin of four-way photoelectrical coupler chip U4 connect input ground,

In described output pulse-switching circuit, the drain electrode of MOS triode T1 respectively with the drain electrode of MOS triode T3, after being connected, the negative pole of diode D14 and D16 meets the isolated high-voltage output+HV in isolated high-voltage and suspension auxiliary electric power supply circuit, the grid of MOS triode T1 connects respectively the negative pole of diode D10, one end of resistance R 20, 16 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 2 feeder ears+V2 suspends in another termination isolated high-voltage of resistance R 20 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T1 respectively with the positive pole of diode D10 and D14, the drain electrode of MOS triode T2, the negative pole of diode D15, suspension 2 ground G2 in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 15 pin of four-way photoelectrical coupler chip U4 are connected, and draw as pulse output end OUT2, the grid of MOS triode T3 connects respectively the negative pole of diode D12, one end of resistance R 22, 10 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 3 feeder ears+V3 suspends in another termination isolated high-voltage of resistance R 22 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T3 respectively with the positive pole of diode D12 and D16, the drain electrode of MOS triode T4, the negative pole of diode D17, suspension 3 ground G3 in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 9 pin of four-way photoelectrical coupler chip U4 are connected, and draw as pulse output end OUT1, the grid of MOS triode T2 connects respectively the negative pole of diode D11, one end of resistance R 21, 12 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 1 feeder ear+V1 suspends in another termination isolated high-voltage of resistance R 21 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T2 respectively with the positive pole of diode D11 and D15, G1 isolator in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 11 pin of four-way photoelectrical coupler chip U4 are connected, the grid of MOS triode T4 connects respectively the negative pole of diode D13, one end of

resistance R

23, 14 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 1 feeder ear+V1 suspends in another termination isolated high-voltage of resistance R 23 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T4 respectively with the positive pole of diode D13 and D17, G1 isolator in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 13 pin of four-way photoelectrical coupler chip U4 are connected.

The beneficial effects of the utility model are: realize the bipolarity high-frequency and high-voltage square-wave pulse output of complete isolated controlling; Output pulse frequency wide ranges, waveform are good, and paired pulses frequency regulates within the specific limits; Circuit structure is simple, is easy to small-sized and modularized design; Output response is fast, and conversion efficiency is high, reliable long-term working is good.

Brief description of the drawings

Fig. 1 is that circuit of the present utility model connects block diagram;

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

As shown in Figure 1, 2, a kind of isolated controlling bipolarity high-frequency and high-voltage impulse power supply circuit, comprise isolated high-voltage and suspension auxiliary electric power supply circuit, square wave generation and impulsive quarantine control circuit, output pulse-switching circuit, described output pulse-switching circuit is respectively with isolated high-voltage and suspension auxiliary electric power supply circuit, square wave produces and impulsive quarantine control circuit is connected.

In above-mentioned isolated high-voltage and suspension auxiliary electric power supply circuit, trigger end 2 pin of control chip U1 are connected with threshold value end 6 pin and distinguish one end of connecting resistance R2 and capacitor C 4, discharge end 7 pin one end of connecting resistance R1 respectively of control chip U1, the other end of resistance R 2, the positive pole of capacitor C 3 is connected with the negative pole of diode D1, the negative pole of capacitor C 3 is connected with the positive pole of diode D1 and meets input ground GND, one end of difference connecting resistance R3 after feeder ear 8 pin of control chip U1 are connected with forced resetting end 4 pin, the other end of resistance R 1, the positive pole of capacitor C 3, the collector electrode of photoelectrical coupler U2 output triode, the other end of resistance R 3 connects respectively one end of inductance L 1, anodal and the conduct input feeder ear+Vin of capacitor C 2, the other end of inductance L 1 connects respectively the positive pole of capacitor C 1, Same Name of Ends 1 pin of transformer TRF primary coil Lp, the negative pole of capacitor C 1 and C2 meets input ground GND, different name end 2 pin one end of connecting resistance R9 respectively of transformer TRF primary coil Lp, the drain electrode of triode T5, the other end of resistance R 9 meets input ground GND by capacitor C 7, resistance R 4 is in parallel with diode D2, output 3 pin of control chip U1 connect the negative pole of diode D2, the positive pole of diode D2 connects the grid of triode T5, resistance R 7 and R8 are in parallel with capacitor C 6, the source electrode difference connecting resistance R6 of triode T5 and one end of resistance R 8, the other end of resistance R 6 connects respectively the base stage of triode T6, one end of resistance R 5, the emitter of another termination photoelectrical coupler U2 output triode of resistance R 5, voltage controling end 5 pin of control chip U1 connect respectively one end of capacitor C 5, the collector electrode of triode T6, the emitter of triode T6 respectively with the other end of capacitor C 5 and C4, the other end of resistance R 8, and earth terminal 1 pin of control chip U1 is connected afterwards and meets input ground GND, different name end 3 pin of the secondary coil Ls4 of transformer TRF connect respectively the positive pole of diode D3 and the negative pole of diode D4, the negative pole difference connecting resistance R10 of diode D3 and one end of capacitor C 8, the positive pole of diode D4 meets isolator G1 and draws this end after being connected with one end of capacitor C 9 and C10 respectively, the other end of capacitor C 8 and C9 is connected and connects Same Name of Ends 4 pin of transformer TRF secondary coil Ls4, one end of resistance R 11 is connected with the other end of capacitor C 10 with resistance R 10 respectively and as isolated high-voltage output+HV, different name end 5 pin of the secondary coil Ls5 of transformer TRF connect the positive pole of diode D5, capacitor C 11 is in parallel with resistance R 16, the negative pole of diode D5 connects respectively the positive pole of capacitor C 11, one end of resistance R 15, the positive pole of photoelectrical coupler U2 input diode, the negative pole of photoelectrical coupler U2 input diode connects respectively one end of capacitor C 12 by resistance R 14, the other end of resistance R 15, the negative electrode of control chip U3, the other end of resistance R 11 connects respectively one end of variable resistor R28 by resistance R 12, the other end of capacitor C 12, the control end R of control chip U3, one end of the other end connecting resistance R13 of variable resistor R28, the anode A of control chip U3 respectively with the other end of resistance R 13, the negative pole of capacitor C 11, Same Name of Ends 6 pin of transformer secondary output coil Ls5 are connected and meet G1 isolator, different name end 7 pin of the secondary coil Ls1 of transformer connect the positive pole of diode D6, resistance R 17 is in parallel with capacitor C 13, also draw as the 1 feeder ear+V1 that suspends one end of the negative pole connecting resistance R17 of diode D6, the Same Name of Ends of transformer secondary output coil Ls1 meets G1 isolator after being connected with the other end of resistance R 17, different name end 8 pin of the secondary coil Ls2 of transformer connect the positive pole of diode D7, resistance R 18 is in parallel with capacitor C 14, also draw as the 2 feeder ears+V2 that suspends one end of the negative pole connecting resistance R18 of diode D7, after being connected with the other end of resistance R 18, Same Name of Ends 9 pin of transformer secondary output coil Ls2 draw as the 2 ground G2 that suspend, different name end 10 pin of the secondary coil Ls3 of transformer connect the positive pole of diode D8, resistance R 19 is in parallel with capacitor C 15, also draw as the 3 feeder ears+V3 that suspends one end of the negative pole connecting resistance R19 of diode D8, after being connected with the other end of resistance R 19, Same Name of Ends 11 pin of transformer secondary output coil Ls3 draw as the 3 ground G3 that suspend,

In above-mentioned square wave generation and impulsive quarantine control circuit, trigger end 2 pin of control chip U5 are connected with threshold value end 6 pin and connect respectively one end of variable resistor R29 and capacitor C 16, one end of the other end connecting resistance R24 of variable resistor R29, voltage controling end 5 pin of control chip U5 meet input ground GND after being connected with the other end of capacitor C 16 and earth terminal 1 pin of control chip U5 respectively by capacitor C 17, feeder ear 8 pin of control chip U5 are connected with forced resetting end 4 pin, and meet input feeder ear+Vin after being connected with the collector electrode of triode T7, after being connected, the base stage of triode T7 and T8 connects output 3 pin of control chip U5, the collector electrode of triode T8 meets input ground GND, resistance R 25 is in parallel with capacitor C 18, one end of difference connecting resistance R25 after the emitter of triode T7 and T8 is connected, the other end of resistance R 24, the base stage of another termination triode T9 of resistance R 25, the emitter of triode T9 connects input ground, the collector electrode of triode T9 connects respectively the negative pole of diode D9, 8 pin of four-way photoelectrical coupler chip U4, one end of resistance R 26 and R27 is connected and meets input feeder ear+Vin, the positive pole of diode D9 is the other end of connecting resistance R26 respectively, 1 pin of four-way photoelectrical coupler chip U4, 5 pin of another termination four-way photoelectrical coupler chip U4 of resistance R 27, 2 pin of four-way photoelectrical coupler chip U4 are connected with 3 pin, 6 pin of four-way photoelectrical coupler chip U4 are connected with 7 pin, 4 pin of four-way photoelectrical coupler chip U4 connect input ground,

In above-mentioned output pulse-switching circuit, the drain electrode of MOS triode T1 respectively with the drain electrode of MOS triode T3, after being connected, the negative pole of diode D14 and D16 meets the isolated high-voltage output+HV in isolated high-voltage and suspension auxiliary electric power supply circuit, the grid of MOS triode T1 connects respectively the negative pole of diode D10, one end of resistance R 20, 16 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 2 feeder ears+V2 suspends in another termination isolated high-voltage of resistance R 20 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T1 respectively with the positive pole of diode D10 and D14, the drain electrode of MOS triode T2, the negative pole of diode D15, suspension 2 ground G2 in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 15 pin of four-way photoelectrical coupler chip U4 are connected, and draw as pulse output end OUT2, the grid of MOS triode T3 connects respectively the negative pole of diode D12, one end of resistance R 22, 10 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 3 feeder ears+V3 suspends in another termination isolated high-voltage of resistance R 22 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T3 respectively with the positive pole of diode D12 and D16, the drain electrode of MOS triode T4, the negative pole of diode D17, suspension 3 ground G3 in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 9 pin of four-way photoelectrical coupler chip U4 are connected, and draw as pulse output end OUT1, the grid of MOS triode T2 connects respectively the negative pole of diode D11, one end of resistance R 21, 12 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 1 feeder ear+V1 suspends in another termination isolated high-voltage of resistance R 21 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T2 respectively with the positive pole of diode D11 and D15, G1 isolator in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 11 pin of four-way photoelectrical coupler chip U4 are connected, the grid of MOS triode T4 connects respectively the negative pole of diode D13, one end of

resistance R

23, 14 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 1 feeder ear+V1 suspends in another termination isolated high-voltage of resistance R 23 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T4 respectively with the positive pole of diode D13 and D17, G1 isolator in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 13 pin of four-way photoelectrical coupler chip U4 are connected,

Whole circuit is made up of three parts.Wherein isolated high-voltage and suspension auxiliary power supply part, Master control chip U1 adopts 7555 common time-base circuits, utilize the features such as it is controlled simply, extremely low power consumption, power supply accommodation is wide, load capacity is strong, the astable multivibrator circuit of its formation, by converting rear generation isolated high-voltage and organizing suspension boost voltage more.

Square wave produces and impulsive quarantine control section, control chip except U5 7555, U4 adopts TLP627-4 four-way photoelectrical coupler, its response time is short, current transfer ratio large, isolate withstand voltage height, has guaranteed high performance isolated controlling.

Finally, by full-bridge driver output pulse switch, obtain the bipolarity hf and hv pulse output of isolation completely.

Whole circuit control is simple, consume energy little, output pulse repetition rate high, waveform good.For improving circuit performance, select that noise is low, temperature is floated components and parts little, that high frequency characteristics is good.All components and parts all can adopt paster encapsulation, to reduce overall dimension.

Operation principle

In isolated high-voltage and suspension auxiliary electric power supply circuit, the composition such as control chip U1 and capacitor C 4, resistance R 2 and R1 astable multivibrator circuit.The oscillation pulse signal of exporting from 3 pin of control chip U1, by switch triode T5 driving transformer TRF primary coil Lp, produce higher-order of oscillation pulse voltage at its two ends, and be coupled to by switch transformer TRF that it is secondary, the high pressure isolation sampling feedback control forming by U2, U3 etc., obtain the output of stable isolated high-voltage, simultaneously again the many groups of additional output suspension boost voltage+V1 ,+V2 and+V3.

In square wave generation and impulsive quarantine control circuit, form square wave generation circuit by control chip U5, capacitor C 16, resistance R 24 etc., the square-wave pulse of output is by controlling triode T9, and then control isolating switch U4.In the time that square wave is output as high level, triode T9 is open-minded, and diode D9 is by 1,2 pin of U4 and photoelectrical coupler input clamper corresponding to 3,4 pin, and therefore the output state of U4 is that K1 and K4 disconnect, and K2 and K3 are open-minded; Otherwise, in the time that square wave is output as low level, triode T9 cut-off, the photoelectrical coupler input diode conducting that 1,2 pin of U4 and 3,4 pin are corresponding, the photoelectrical coupler input diode cut-off that 5,6 pin of U4 and 7,8 pin are corresponding, therefore the output state of U4 is that K1 and K4 are open-minded, K2 and K3 disconnect.

In output pulse-switching circuit, by the output state of isolating switch U4, control switch MOS triode T1 ~ T4 periodically respectively.In the time that K1 and K4 disconnection, K2 and K3 open, switch transistor T 1 and T4 conducting, switch transistor T 2 and T3 turn-off, the high-voltage pulse of a polarity of output; As K1 with K4 opens, K2 and K3 be while disconnecting, switch transistor T 1 and T4 turn-off, and the high-voltage pulse of another polarity is exported in switch transistor T 2 and T3 conducting.

Claims

1. an isolated controlling bipolarity high-frequency and high-voltage impulse power supply circuit, it is characterized in that: comprise isolated high-voltage and suspension auxiliary electric power supply circuit, square wave generation and impulsive quarantine control circuit, output pulse-switching circuit, described output pulse-switching circuit is respectively with isolated high-voltage and suspension auxiliary electric power supply circuit, square wave produces and impulsive quarantine control circuit is connected;

In described output pulse-switching circuit, the drain electrode of MOS triode T1 respectively with the drain electrode of MOS triode T3, after being connected, the negative pole of diode D14 and D16 meets the isolated high-voltage output+HV in isolated high-voltage and suspension auxiliary electric power supply circuit, the grid of MOS triode T1 connects respectively the negative pole of diode D10, one end of resistance R 20, 16 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 2 feeder ears+V2 suspends in another termination isolated high-voltage of resistance R 20 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T1 respectively with the positive pole of diode D10 and D14, the drain electrode of MOS triode T2, the negative pole of diode D15, suspension 2 ground G2 in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 15 pin of four-way photoelectrical coupler chip U4 are connected, and draw as pulse output end OUT2, the grid of MOS triode T3 connects respectively the negative pole of diode D12, one end of resistance R 22, 10 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 3 feeder ears+V3 suspends in another termination isolated high-voltage of resistance R 22 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T3 respectively with the positive pole of diode D12 and D16, the drain electrode of MOS triode T4, the negative pole of diode D17, suspension 3 ground G3 in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 9 pin of four-way photoelectrical coupler chip U4 are connected, and draw as pulse output end OUT1, the grid of MOS triode T2 connects respectively the negative pole of diode D11, one end of resistance R 21, 12 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 1 feeder ear+V1 suspends in another termination isolated high-voltage of resistance R 21 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T2 respectively with the positive pole of diode D11 and D15, G1 isolator in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 11 pin of four-way photoelectrical coupler chip U4 are connected, the grid of MOS triode T4 connects respectively the negative pole of diode D13, one end of resistance R 23, 14 pin of four-way photoelectrical coupler chip U4 in square wave generation and impulsive quarantine control circuit, 1 feeder ear+V1 suspends in another termination isolated high-voltage of resistance R 23 and suspension auxiliary electric power supply circuit, the source electrode of MOS triode T4 respectively with the positive pole of diode D13 and D17, G1 isolator in isolated high-voltage and suspension auxiliary electric power supply circuit, in square wave generation and impulsive quarantine control circuit, 13 pin of four-way photoelectrical coupler chip U4 are connected.