CN101807858B - Small two-way positive and negative output high-voltage module power - Google Patents
Small two-way positive and negative output high-voltage module power Download PDFInfo
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Abstract
The invention relates to a small two-way positive and negative output high-voltage module power. The module power comprises a power circuit encapsulated in a shell, wherein a plurality of pins are welded on the power circuit; the power circuit comprises a reference circuit, a voltage-limiting control circuit, a high-voltage feedback and control circuit, a overcurrent protection circuit, a high-voltage start and stop control circuit and a high-voltage output circuit; and the high-voltage feedback and control circuit is connected with the reference circuit, the voltage-limiting control circuit, the overcurrent protection circuit, the high-voltage start and stop control circuit and the high-voltage output circuit respectively. The beneficial effects of the invention are as follows: the positive and negative output regulation ranges are wide and can be both regulated from zero, the voltage can be controlled from the outside or a potentiometer can be used for regulation; the output conversion efficiency is high; the module power has the function that the start and stop of high voltage can be controlled from the outside; the temperature drift is low, the stability is high, the output ripple is small, the long-term stability is good; and the module power has small overall dimension and light weight and is suitable for the installation of the printed circuit board (PCB).
Description
Technical field
The present invention relates to a kind ofly, and be widely used in the small two-way positive and negative output high-voltage module power in various analytical instrument, optical instrument, the enviromental protection instrument etc. for the fields such as various clastotypes of photomultiplier, Geiger counter tube and capillary electrophoresis system provide high-voltage dc.
Background technology
Existing two-way positive and negative output high-voltage module power product on the market, though kind and purposes are a lot, ubiquity the defective of the multiple functional parameter requirement that can not get both, if any volume bigger, be difficult for PCB and install; The delivery efficiency that has is low, and is big from loss; The defencive function that has is poor, and power supply is fragile; Have for the output of positive and negative fixedly high pressure and can not regulate, it is restricted etc. at work.
Summary of the invention
In view of the deficiency that prior art exists, the invention provides high, the more comprehensive small two-way positive and negative output high-voltage module power of function of a kind of reliability and stability.
The present invention is for realizing above-mentioned purpose; The technical scheme of being taked is: a kind of small two-way positive and negative output high-voltage module power; Comprise the power circuit that is encapsulated in the housing; Be welded with several pins that draw on the power circuit; It is characterized in that: said power circuit comprises reference circuit, pressure limiting control circuit, high pressure feedback and control circuit, current foldback circuit, high pressure starting or stopping control circuit and high-voltage output circuit, and said high pressure feedback and control circuit are connected with high-voltage output circuit with reference circuit, pressure limiting control circuit, current foldback circuit, high pressure starting or stopping control circuit respectively;
The 1 pin connecting resistance R20 of controlled a reference source U2 and an end of resistance R 21 in the said reference circuit; 2 pin of controlled a reference source U2 link to each other with the negative pole of the other end of resistance R 21 and capacitor C 23 and meet input ground GND; 3 pin of controlled a reference source U2 respectively an end, the resistance R 20 of connecting resistance R22 the other end, capacitor C 23 anodal and as reference voltage terminal Vref, another termination input feeder ear+Vin of resistance R 22;
An end of 5 pin of amplifier U1B difference connecting resistance R15 and resistance R 16 in the said pressure limiting control circuit; Another termination reference voltage terminal Vref of resistance R 15; Another termination input ground GND of resistance R 16; 7 pin of amplifier U1B connect the negative pole of diode D5; 6 pin of amplifier U1B connect an end of positive pole, capacitor C 25 and the resistance R 14 of diode D5 respectively, and the other end of resistance R 14 links to each other with an end of resistance R 13 and meets voltage-regulation input Vadj, and the other end of resistance R 13 and capacitor C 25 links to each other and meets input ground GND;
An end of inductance L 1 connects the positive pole of capacitor C 1, the d end of transformer TRF primary coil Lp respectively in said high pressure feedback and the control circuit; The negative pole of capacitor C 1 meets input ground GND, the collector electrode of the c termination triode T1 of transformer TRF primary coil Lp, and the base stage of triode T1 connects the b end of transformer TRF feedback coil Lf; The a end of transformer TRF feedback coil Lf connects an end of capacitor C 2 and resistance R 4 respectively through resistance R 5; The other end of capacitor C 2 links to each other with the emitter of triode T1 and meets input ground GND, an end of another termination capacitor C 3 of resistance R 4 and the collector electrode of triode T3, the end of the other end difference connecting resistance R7 of capacitor C 3, the emitter of triode T3; Input feeder ear+the end of Vin difference connecting resistance R6 and the other end of resistance R 7; The other end of resistance R 6 connect respectively capacitor C 5 positive pole, diode D1 negative pole and as in-line power end Vcc, the negative pole of capacitor C 5 links to each other with the positive pole of diode D1 and meets input ground GND, the base stage of triode T3 connects the collector electrode of triode T2 through resistance R 1; The base stage difference connecting resistance R2 of triode T2 and an end of resistance R 3; The other end of resistance R 2 links to each other with the emitter of triode T2 and meets input ground GND, and the other end of resistance R 3 connects 1 pin of amplifier U1A and an end of capacitor C 4 respectively, and 2 pin of amplifier U1A connect an end of the other end, resistance R 29 and the resistance R 30 of capacitor C 4 respectively; 3 pin of amplifier U1A connect 6 pin of amplifier U1B in the pressure limiting control circuit; Another termination input ground GND of resistance R 30, resistance R 27 is parallelly connected with capacitor C 22, and the other end of resistance R 29 is through the end of resistance R 28 connecting resistance R27; 8 pin of amplifier U1A meet in-line power end Vcc, and 4 pin of amplifier U1A meet input ground GND;
The collector electrode of triode T5 links to each other with the emitter of triode T4 in the said current foldback circuit; And connect an end of input feeder ear+Vin, resistance R 8 respectively; The other end of inductance L 1 in an end, high pressure feedback and the control circuit of the other end difference connecting resistance R9 of resistance R 8; The base stage of another termination triode T4 of resistance R 9, the collector electrode of triode T4 connects the base stage of triode T5 through resistance R 10, and the emitter of triode T5 is the end of connecting resistance R11 and the positive pole of diode D2 respectively; The end of the negative pole difference connecting resistance R12 of diode D2 and the positive pole of capacitor C 24; The other end of resistance R 11 links to each other with the negative pole of capacitor C 24 and meets input ground GND, and the positive pole of another terminating diode D3 of resistance R 12, the negative pole of diode D3 connect 2 pin of amplifier U1A in high pressure feedback and the control circuit;
A termination start and stop control end R/S of resistance R 18 in the said high pressure starting or stopping control circuit; The end of the other end difference connecting resistance R19 of resistance R 18 and the base stage of triode T6; The other end of resistance R 19 links to each other with the emitter of triode T6 and meets input ground GND; The end of the collector electrode difference connecting resistance R17 of triode T6 and the positive pole of diode D4, another termination in-line power end Vcc of resistance R 17, the negative pole of diode D4 connect 2 pin of amplifier U1A in high pressure feedback and the control circuit;
1 end of transformer TRF secondary high coil Ls1 connects the negative pole of diode D6, the positive pole of diode D7 and an end of capacitor C 8 respectively through capacitor C 6 in the said high-voltage output circuit; The other end of capacitor C 8 connects the negative pole of diode D8, the positive pole of diode D9 and an end of capacitor C 10 respectively; The other end of capacitor C 10 connects the negative pole of diode D10, the positive pole of diode D11 respectively; 2 ends of transformer TRF secondary high coil Ls1 connect the positive pole of diode D6, an end of capacitor C 7 respectively; The other end of capacitor C 7 connects the negative pole of diode D7, the positive pole of diode D8 and an end of capacitor C 9 respectively; The other end of capacitor C 9 connects the negative pole of diode D9, the positive pole of diode D10 and an end of capacitor C 11 respectively; The other end of capacitor C 11 connects the negative pole of diode D11 and an end of resistance R 23 respectively; The other end of resistance R 23 connects the other end of resistance R 27 in an end, high pressure feedback and the control circuit of capacitor C 18 and resistance R 24 respectively; The other end of resistance R 24 is as positive high voltage output+HV; The other end of capacitor C 18 links to each other with 2 ends of transformer TRF secondary high coil Ls1 through capacitor C 19 and meets output ground HGND; 4 ends of transformer TRF secondary high coil Ls2 connect the negative pole of diode D13, the positive pole of diode D12 and an end of capacitor C 14 respectively through capacitor C 12, and the other end of capacitor C 14 connects the negative pole of diode D15, the positive pole of diode D14 and an end of capacitor C 16 respectively, and the other end of capacitor C 16 connects the negative pole of diode D17, the positive pole of diode D16 respectively; 3 ends of transformer TRF secondary high coil Ls2 connect the negative pole of diode D12, an end of capacitor C 13 respectively; The other end of capacitor C 13 connects the negative pole of diode D14, the positive pole of diode D13 and an end of capacitor C 15 respectively, and the other end of capacitor C 15 connects the negative pole of diode D16, the positive pole of diode D15 and an end of capacitor C 17 respectively, and the other end of capacitor C 17 connects the positive pole of diode D17 and an end of resistance R 25 respectively; The other end of resistance R 25 connects an end of an end, resistance R 26 and the resistance R 31 of capacitor C 21 respectively; The other end of resistance R 26 is as negative high voltage output-HV, and another termination output ground HGND of resistance R 31, the other end of capacitor C 21 link to each other with 3 ends of transformer TRF secondary high coil Ls2 through capacitor C 20 and connect and export ground HGND.
Said several pin that draws is exposed to outside the housing; One side is five and draws pin by power input+Vin, input ground GND, start and stop control end R/S, voltage-regulation input Vadj, reference voltage terminal Vref sequence arrangement; Opposite side is three and draws pin, presses negative high voltage output-HV, output ground HGND, positive high voltage output+HV sequence arrangement.
The invention has the beneficial effects as follows: positive negative output adjustable range is wide, can transfer also and can regulate through external control voltage or potentiometer from zero simultaneously; The output conversion efficiency is high; Outside start and stop control high voltage functionality is arranged; Low temperature drift, high stability, output ripple is little, and long-time stability are good; Overall dimension is little, and is in light weight, is easy to PCB and installs.
Description of drawings
Fig. 1 is a profile sketch map of the present invention.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is that circuit of the present invention connects block diagram.
Fig. 4 is circuit theory diagrams of the present invention.
Embodiment
Like Fig. 1,2,3, shown in 4; Small two-way positive and negative output high-voltage module power; Comprise the power circuit that is encapsulated in the housing 1; Be welded with several pins 2 that draw on the power circuit; Power circuit comprises reference circuit, pressure limiting control circuit, high pressure feedback and control circuit, current foldback circuit, high pressure starting or stopping control circuit and high-voltage output circuit, and high pressure feedback and control circuit are connected with high-voltage output circuit with reference circuit, pressure limiting control circuit, current foldback circuit, high pressure starting or stopping control circuit respectively.
Combine integrated amplifier etc. to constitute the high pressure feedback control system by self-maintained circuit; There are control high pressure start and stop end, benchmark output and high voltage adjusting end in the outside, and there are overcurrent and voltage-limiting protection etc. in inside; Circuit structure is novel simple, controls convenient, flexible.
The components and parts that select low noise, low temperature drift for use, have good stability; Reasonably the PCB layout reduces overall dimension, weight reduction; Guarantee the independent pathway between each loop ' ', avoid crosstalking each other between signal; The reliability and the stability of power supply long-term work are guaranteed in good transformer line pack arrangement technology, technique for coiling and High-Voltage Insulation processing etc.
Two-way positive and negative output high-voltage module power adopts metal shell, and frame ground, makes it have good electromagnetic shielding action, and antijamming capability.
Operation principle:
Form self-maintained circuit by transformer TRF primary coil Lp, feedback coil Lf, triode T1 and capacitor C 2 etc.Energized moment, high pressure output is set up, and 1 pin of amplifier U1A is a high potential; Triode T2, T3 conducting, input power supply+Vin makes triode T1 conducting, oscillating circuit work through resistance R 7, triode T3, resistance R 4 and feedback coil Lf etc.; Elementary generation high frequency of oscillation pulse voltage; And be coupled on its two secondary coil Ls1 and the Ls2 through transformer TRF, it is the ac pulse voltage at two ends separately, after identical multistage boosting, produces the two-way positive and negative high pressure.From the positive high voltage sampled signal that resistance R 27, resistance R 28, resistance R 29 and resistance R 30 obtain, through the state of feedback circuit control generators such as amplifier U1A, triode T2, T3, and then stable high voltage is exported.
When the level work electric current was greater than protective current originally, the primary current sampled signal voltage on resistance R 8 increased, and makes triode T4, T5 conducting; Input feeder ear+Vin through triode T4, T5 and diode D2 moment to capacitor C 24 chargings; Its two ends current potential is raise, and, the 1 pin current potential of amplifier U1A is descended through 2 pin that diode D3 is added to amplifier U1A; Triode T3 ends, thereby oscillating circuit is quit work.Afterwards, elementary operating current descends rapidly, and triode T4, T5 end, and stops to capacitor C 24 charging, and capacitor C 24 will be discharged through resistance R 12, diode D3, resistance R 30, is lower than 3 pin current potentials up to the 2 pin current potentials of amplifier U1A, and overcurrent protection work stops.
In addition, when start and stop control end R/S is a low level or when unsettled, close the output of two-way positive and negative high pressure; When start and stop control end R/S is high level, start the output of two-way positive and negative high pressure.1 pair of high frequency of oscillation alternating voltage of inductance L plays the isolation barrier effect, reduces the interference of high-frequency ac working pulse voltage to control circuit and supply power voltage.
Claims (2)
1. small two-way positive and negative output high-voltage module power; Comprise the power circuit that is encapsulated in the housing (1); Be welded with several pins (2) that draw on the power circuit; It is characterized in that: said power circuit comprises reference circuit, pressure limiting control circuit, high pressure feedback and control circuit, current foldback circuit, high pressure starting or stopping control circuit and high-voltage output circuit, and said high pressure feedback and control circuit are connected with high-voltage output circuit with reference circuit, pressure limiting control circuit, current foldback circuit, high pressure starting or stopping control circuit respectively;
The control end 1 pin connecting resistance R20 of three end adjustable reference source U2 and an end of resistance R 21 in the said reference circuit; Anode 2 pin of three end adjustable reference source U2 link to each other with the negative pole of the other end of resistance R 21 and capacitor C 23 and meet input ground GND; Negative electrode 3 pin of three end adjustable reference source U2 respectively an end, the resistance R 20 of connecting resistance R22 the other end, capacitor C 23 anodal and as reference voltage terminal Vref, another termination input feeder ear+Vin of resistance R 22;
An end of in-phase input end 5 pin of amplifier U1B difference connecting resistance R15 and resistance R 16 in the said pressure limiting control circuit; Another termination reference voltage terminal Vref of resistance R 15; Another termination input ground GND of resistance R 16; Output 7 pin of amplifier U1B connect the negative pole of diode D5; Inverting input 6 pin of amplifier U1B connect an end of positive pole, capacitor C 25 and the resistance R 14 of diode D5 respectively, and the other end of resistance R 14 links to each other with an end of resistance R 13 and meets voltage-regulation input Vadj, and the other end of resistance R 13 and capacitor C 25 links to each other and meets input ground GND;
An end of inductance L 1 connects the positive pole of capacitor C 1, the different name end d end of transformer TRF primary coil Lp respectively in said high pressure feedback and the control circuit; The negative pole of capacitor C 1 meets input ground GND; The collector electrode of the end c termination triode T1 of the same name of transformer TRF primary coil Lp; The base stage of triode T1 connects the different name end b end of transformer TRF feedback coil Lf, and the end a of the same name of transformer TRF feedback coil Lf holds an end that connects capacitor C 2 and resistance R 4 through resistance R 5 respectively, and the other end of capacitor C 2 links to each other with the emitter of triode T1 and meets input ground GND; One end of another termination capacitor C 3 of resistance R 4 and the collector electrode of triode T3; The other end of capacitor C 3 is the end, the emitter of triode T3 of connecting resistance R7 respectively, and input feeder ear+Yin is the end of connecting resistance R6 and the other end of resistance R 7 respectively, the other end of resistance R 6 connect respectively capacitor C 5 positive pole, diode D1 negative pole and as in-line power end Vcc; The negative pole of capacitor C 5 links to each other with the positive pole of diode D1 and meets input ground GND; The base stage of triode T3 connects the collector electrode of triode T2 through resistance R 1, and the base stage of triode T2 is an end of connecting resistance R2 and resistance R 3 respectively, the other end of resistance R 2 link to each other with the emitter of triode T2 and connect import GND; The other end of resistance R 3 connects output 1 pin of amplifier U1A and an end of capacitor C 4 respectively; Inverting input 2 pin of amplifier U1A connect an end of the other end, resistance R 29 and the resistance R 30 of capacitor C 4 respectively, and in-phase input end 3 pin of amplifier U1A connect inverting input 6 pin of amplifier U1B in the pressure limiting control circuit, another termination input ground GND of resistance R 30; Resistance R 27 is parallelly connected with capacitor C 22; The other end of resistance R 29 is through the end of resistance R 28 connecting resistance R27, and feeder ear 8 pin of amplifier U1A meet in-line power end Vcc, and earth terminal 4 pin of amplifier U1A meet input ground GND;
The collector electrode of triode T5 links to each other with the emitter of triode T4 in the said current foldback circuit; And connect an end of input feeder ear+Yin, resistance R 8 respectively; The other end of inductance L 1 in an end, high pressure feedback and the control circuit of the other end difference connecting resistance R9 of resistance R 8; The base stage of another termination triode T4 of resistance R 9, the collector electrode of triode T4 connects the base stage of triode T5 through resistance R 10, and the emitter of triode T5 is the end of connecting resistance R11 and the positive pole of diode D2 respectively; The end of the negative pole difference connecting resistance R12 of diode D2 and the positive pole of capacitor C 24; The other end of resistance R 11 links to each other with the negative pole of capacitor C 24 and meets input ground GND, and the positive pole of another terminating diode D3 of resistance R 12, the negative pole of diode D3 connect inverting input 2 pin of amplifier U1A in high pressure feedback and the control circuit;
A termination start and stop control end R/S of resistance R 18 in the said high pressure starting or stopping control circuit; The end of the other end difference connecting resistance R19 of resistance R 18 and the base stage of triode T6; The other end of resistance R 19 links to each other with the emitter of triode T6 and meets input ground GND; The end of the collector electrode difference connecting resistance R17 of triode T6 and the positive pole of diode D4, another termination in-line power end Vcc of resistance R 17, the negative pole of diode D4 connect inverting input 2 pin of amplifier U1A in high pressure feedback and the control circuit;
End of the same name 1 end of transformer TRF secondary high coil Ls1 connects the negative pole of diode D6, the positive pole of diode D7 and an end of capacitor C 8 respectively through capacitor C 6 in the said high-voltage output circuit; The other end of capacitor C 8 connects the negative pole of diode D8, the positive pole of diode D9 and an end of capacitor C 10 respectively; The other end of capacitor C 10 connects the negative pole of diode D10, the positive pole of diode D11 respectively; Different name end 2 ends of transformer TRF secondary high coil Ls1 connect the positive pole of diode D6, an end of capacitor C 7 respectively; The other end of capacitor C 7 connects the negative pole of diode D7, the positive pole of diode D8 and an end of capacitor C 9 respectively; The other end of capacitor C 9 connects the negative pole of diode D9, the positive pole of diode D10 and an end of capacitor C 11 respectively; The other end of capacitor C 11 connects the negative pole of diode D11 and an end of resistance R 23 respectively; The other end of resistance R 23 connects the other end of resistance R 27 in an end, high pressure feedback and the control circuit of capacitor C 18 and resistance R 24 respectively; The other end of resistance R 24 is as positive high voltage output+HV; The other end of capacitor C 18 links to each other with different name end 2 ends of transformer TRF secondary high coil Ls1 through capacitor C 19 and meets output ground HGND; End of the same name 4 ends of transformer TRF secondary high coil Ls2 connect the negative pole of diode D13, the positive pole of diode D12 and an end of capacitor C 14 respectively through capacitor C 12, and the other end of capacitor C 14 connects the negative pole of diode D15, the positive pole of diode D14 and an end of capacitor C 16 respectively, and the other end of capacitor C 16 connects the negative pole of diode D17, the positive pole of diode D16 respectively; Different name end 3 ends of transformer TRF secondary high coil Ls2 connect the negative pole of diode D12, an end of capacitor C 13 respectively; The other end of capacitor C 13 connects the negative pole of diode D14, the positive pole of diode D13 and an end of capacitor C 15 respectively, and the other end of capacitor C 15 connects the negative pole of diode D16, the positive pole of diode D15 and an end of capacitor C 17 respectively, and the other end of capacitor C 17 connects the positive pole of diode D17 and an end of resistance R 25 respectively; The other end of resistance R 25 connects an end of an end, resistance R 26 and the resistance R 31 of capacitor C 21 respectively; The other end of resistance R 26 is as negative high voltage output-HV, and another termination output ground HGND of resistance R 31, the other end of capacitor C 21 link to each other with different name end 3 ends of transformer TRF secondary high coil Ls2 through capacitor C 20 and connect and export ground HGND.
2. small two-way positive and negative output high-voltage module power according to claim 1; It is characterized in that: said several pins (2) that draw are exposed to outside the housing (1); One side is five and draws pin (2) by input feeder ear+Vin, input ground GND, start and stop control end R/S, voltage-regulation input Vadj, reference voltage terminal Vref sequence arrangement; Opposite side is three and draws pin (2), presses negative high voltage output-HV, output ground HGND, positive high voltage output+HV sequence arrangement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101640952A CN101807858B (en) | 2010-05-06 | 2010-05-06 | Small two-way positive and negative output high-voltage module power |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101640952A CN101807858B (en) | 2010-05-06 | 2010-05-06 | Small two-way positive and negative output high-voltage module power |
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| CN101807858A CN101807858A (en) | 2010-08-18 |
| CN101807858B true CN101807858B (en) | 2012-01-04 |
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| CN2010101640952A Expired - Fee Related CN101807858B (en) | 2010-05-06 | 2010-05-06 | Small two-way positive and negative output high-voltage module power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160448B (en) * | 2016-07-13 | 2018-05-25 | 东文高压电源（天津）股份有限公司 | One kind is with the interlocking positive or negative high voltage switching output circuit that is delayed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102938614B (en) * | 2011-08-15 | 2015-03-25 | 上海普锐马电子有限公司 | Program control high-voltage power circuit of floating ground |
| CN102891609A (en) * | 2012-11-01 | 2013-01-23 | 东文高压电源（天津）有限公司 | Negative polarity fixed output high-voltage power circuit consisting of TL431 |
| CN103904628A (en) * | 2012-12-28 | 2014-07-02 | 深圳市海洋王照明工程有限公司 | Charger and over-current protection circuit thereof |
| CN103633851A (en) * | 2013-12-19 | 2014-03-12 | 东文高压电源（天津）有限公司 | Voltage-adjustable current-adjustable high-performance positive laser power supply circuit composed of 555 |
| CN106129959A (en) * | 2016-08-06 | 2016-11-16 | 刘勇 | A kind of power circuit and power circuit protection circuit thereof |
| CN106130386B (en) * | 2016-08-28 | 2018-06-19 | 东文高压电源（天津）股份有限公司 | A kind of adjustable high pressure output power supply circuit of integrated positive/negative continuously linear |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2454797Y (en) * | 2000-12-26 | 2001-10-17 | 章祖文 | Light Dc. voltage regulated and current-stabilized power supply |
| CN2629085Y (en) * | 2003-05-28 | 2004-07-28 | 章祖文 | DC, stablized voltage and stablized current variable voltage and current electric power supply |
| CN2703359Y (en) * | 2004-03-01 | 2005-06-01 | 谢胜华 | Switch power supply source module circuit |
| CN201699586U (en) * | 2010-05-06 | 2011-01-05 | 天津市东文高压电源厂 | Miniature two-circuit positive and negative output high-voltage module power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106160448B (en) * | 2016-07-13 | 2018-05-25 | 东文高压电源（天津）股份有限公司 | One kind is with the interlocking positive or negative high voltage switching output circuit that is delayed |
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| CN101807858A (en) | 2010-08-18 |
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