CN102332828B - Simple micro fixed positive output high voltage power circuit - Google Patents
Simple micro fixed positive output high voltage power circuit Download PDFInfo
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- CN102332828B CN102332828B CN 201110278210 CN201110278210A CN102332828B CN 102332828 B CN102332828 B CN 102332828B CN 201110278210 CN201110278210 CN 201110278210 CN 201110278210 A CN201110278210 A CN 201110278210A CN 102332828 B CN102332828 B CN 102332828B
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Abstract
The invention relates to a simple micro fixed positive output high voltage power circuit for providing a stable high voltage direct current electric field for various measuring instruments in fields of industry, environment protection, medical treatment, war industry and the like. The circuit comprises a high voltage control and drive circuit, an overcurrent protection circuit and a high voltage output circuit. An output of the high voltage control and drive circuit is connected with an input of the high voltage output circuit. An output of the high voltage output circuit is connected with an input of the overcurrent protection circuit. An output of the overcurrent protection circuit is connected with an input of the high voltage control and drive circuit. The simple micro fixed positive output high voltage power circuit has the beneficial effects that under the condition of ensuring the main electric performances of a high voltage power supply, few devices are used, the overall appearance size is small, the weight is light, the reliability is high, and the simple micro fixed positive output high voltage power circuit is easy to install.
Description
Technical field
The present invention relates to a kind of for multiple measuring instruments in field such as industry, environmental protection, medical treatment and military projects, for it provides a kind of simple miniature fixedly positive output high-voltage power circuit of stable high voltage DC electric field.
Background technology
The low-power high-voltage power supply is had many uses, in a lot of fields, be widely used in various measuring instruments, instrumentation, miniaturization along with various instrument and meter equipment, market is more and more higher to the volume requirement of the type high voltage source, under the prerequisite that guarantees the high voltage source electrical performance indexes, miniaturization, microminiaturization become the development trend of this purposes high voltage source.
Summary of the invention
In view of existing market actual conditions and Future Development trend, the invention provides a kind of circuit simple, use that components and parts are few, simple miniature fixedly positive output high-voltage power circuits such as high reliability and stability.
The present invention for achieving the above object, the technical scheme of taking is: a kind of simple miniature fixedly positive output high-voltage power circuit, it is characterized in that: this circuit comprises high voltage control and drive circuit, current foldback circuit and high-voltage output circuit, the output of described high voltage control and drive circuit is connected with the input of high-voltage output circuit, the output of described high-voltage output circuit is connected with the input of current foldback circuit, and the output of described current foldback circuit is connected with the input of high voltage control and drive circuit;
An end of inductance L 1 meets power supply input+Vin respectively in described high voltage control and the drive circuit, one end of the emitter of triode T1 and resistance R 4, the other end of inductance L 1 connects the positive pole of capacitor C 1 respectively, different name end 1 pin of transformer TRF primary coil Lp1, the negative pole of capacitor C 1 meets input ground GND, end of the same name 2 pin of transformer TRF primary coil Lp1 connect the collector electrode of triode T2, different name end 3 pin of transformer TRF primary coil Lp2 connect the base stage of triode T2, end of the same name 4 pin of transformer TRF primary coil Lp2 connect an end of capacitor C 2 and resistance R 1 respectively by resistance R 2, the other end of capacitor C 2 links to each other with the emitter of triode T2 and meets input ground GND, the collector electrode of another termination triode T1 of resistance R 1, the base stage of triode T1 connects the collector electrode of triode T3 by resistance R 3, resistance R 5 and capacitor C 3 parallel connections, the base stage difference connecting resistance R5 of triode T3 and an end of resistance R 6, the other end of resistance R 6 links to each other with the emitter of triode T3 and meets input ground GND, the negative electrode 3 pin difference connecting resistance R4 of controlled a reference source U1 and the other end of resistance R 5, one end of capacitor C 4, the control utmost point 1 pin difference connecting resistance R7 of controlled a reference source U1 and an end of resistance R 12, the other end of capacitor C 4, anode 2 pin of controlled a reference source U1 link to each other with the other end of resistance R 7 and meet input ground GND, the end of the other end connecting resistance R13 of resistance R 12, start and stop control end R/S connects the positive pole of diode D11, and the negative pole of diode D11 connects the control utmost point 1 pin of controlled a reference source U1 by resistance R 8;
In the described current foldback circuit, the collector electrode of triode T4 connects negative electrode 3 pin of controlled a reference source U1 in high voltage control and the drive circuit, the emitter difference connecting resistance R9 of triode T4 and an end of capacitor C 5, the base stage of triode T4 links to each other with the other end of capacitor C 5 and meets input ground GND, and the other end of resistance R 9 connects high pressure output ground HG end by resistance R 10;
In the described high-voltage output circuit; different name end 5 pin of transformer TRF secondary high pressure coil Ls1 connect the negative pole of diode D1 respectively by capacitor C 6; one end of the positive pole of diode D2 and capacitor C 8; the other end of capacitor C 8 connects the negative pole of diode D3 respectively; one end of the positive pole of diode D4 and capacitor C 10; the other end of capacitor C 10 connects the negative pole of diode D5 respectively; one end of the positive pole of diode D6 and capacitor C 12; the other end of capacitor C 12 connects the negative pole of diode D7 respectively; one end of the positive pole of diode D8 and capacitor C 14; the other end of capacitor C 14 connects the negative pole of diode D9 and the positive pole of diode D10 respectively; end of the same name 6 pin of transformer TRF secondary high pressure coil Ls1 connect the positive pole of diode D1 respectively; one end of resistance R 14 and capacitor C 7; the other end of resistance R 14 is taken over the other end of resistance R 9 in the stream protective circuit; the other end of capacitor C 7 connects the negative pole of diode D2 respectively; one end of the positive pole of diode D3 and capacitor C 9; the other end of capacitor C 9 connects the negative pole of diode D4 respectively; one end of the positive pole of diode D5 and capacitor C 11; the other end of capacitor C 11 connects the negative pole of diode D6 respectively; one end of the positive pole of diode D7 and capacitor C 13; the other end of capacitor C 13 connects the negative pole of diode D8 respectively; one end of the positive pole of diode D9 and capacitor C 15; the other end of capacitor C 15 connects the negative pole of diode D10 respectively; one end of resistance R 11; the other end of resistance R 13 in high voltage control and the drive circuit, another termination high-voltage output end+HV of resistance R 11.
The invention has the beneficial effects as follows: guaranteeing under the main electrical property condition of high voltage source, use that components and parts are less, monnolithic case is small-sized, in light weight, reliability is high, be easy to install.
Description of drawings
Fig. 1 is that circuit of the present invention connects block diagram.
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 1, 2, a kind of simple miniature fixedly positive output high-voltage power circuit, this circuit comprises high voltage control and drive circuit, current foldback circuit and high-voltage output circuit, the output of high voltage control and drive circuit is connected with the input of high-voltage output circuit, the output of high-voltage output circuit is connected with the input of current foldback circuit, and the output of current foldback circuit is connected with the input of high voltage control and drive circuit;
An end of inductance L 1 meets power supply input+Vin respectively in high voltage control and the drive circuit, one end of the emitter of triode T1 and resistance R 4, the other end of inductance L 1 connects the positive pole of capacitor C 1 respectively, different name end 1 pin of transformer TRF primary coil Lp1, the negative pole of capacitor C 1 meets input ground GND, end of the same name 2 pin of transformer TRF primary coil Lp1 connect the collector electrode of triode T2, different name end 3 pin of transformer TRF primary coil Lp2 connect the base stage of triode T2, end of the same name 4 pin of transformer TRF primary coil Lp2 connect an end of capacitor C 2 and resistance R 1 respectively by resistance R 2, the other end of capacitor C 2 links to each other with the emitter of triode T2 and meets input ground GND, the collector electrode of another termination triode T1 of resistance R 1, the base stage of triode T1 connects the collector electrode of triode T3 by resistance R 3, resistance R 5 and capacitor C 3 parallel connections, the base stage difference connecting resistance R5 of triode T3 and an end of resistance R 6, the other end of resistance R 6 links to each other with the emitter of triode T3 and meets input ground GND, the negative electrode 3 pin difference connecting resistance R4 of controlled a reference source U1 and the other end of resistance R 5, one end of capacitor C 4, the control utmost point 1 pin difference connecting resistance R7 of controlled a reference source U1 and an end of resistance R 12, the other end of capacitor C 4, anode 2 pin of controlled a reference source U1 link to each other with the other end of resistance R 7 and meet input ground GND, the end of the other end connecting resistance R13 of resistance R 12, start and stop control end R/S connects the positive pole of diode D11, and the negative pole of diode D11 connects the control utmost point 1 pin of controlled a reference source U1 by resistance R 8;
In the current foldback circuit, the collector electrode of triode T4 connects negative electrode 3 pin of controlled a reference source U1 in high voltage control and the drive circuit, the emitter difference connecting resistance R9 of triode T4 and an end of capacitor C 5, the base stage of triode T4 links to each other with the other end of capacitor C 5 and meets input ground GND, and the other end of resistance R 9 connects high pressure output ground HG end by resistance R 10;
In the high-voltage output circuit; different name end 5 pin of transformer TRF secondary high pressure coil Ls1 connect the negative pole of diode D1 respectively by capacitor C 6; one end of the positive pole of diode D2 and capacitor C 8; the other end of capacitor C 8 connects the negative pole of diode D3 respectively; one end of the positive pole of diode D4 and capacitor C 10; the other end of capacitor C 10 connects the negative pole of diode D5 respectively; one end of the positive pole of diode D6 and capacitor C 12; the other end of capacitor C 12 connects the negative pole of diode D7 respectively; one end of the positive pole of diode D8 and capacitor C 14; the other end of capacitor C 14 connects the negative pole of diode D9 and the positive pole of diode D10 respectively; end of the same name 6 pin of transformer TRF secondary high pressure coil Ls1 connect the positive pole of diode D1 respectively; one end of resistance R 14 and capacitor C 7; the other end of resistance R 14 is taken over the other end of resistance R 9 in the stream protective circuit; the other end of capacitor C 7 connects the negative pole of diode D2 respectively; one end of the positive pole of diode D3 and capacitor C 9; the other end of capacitor C 9 connects the negative pole of diode D4 respectively; one end of the positive pole of diode D5 and capacitor C 11; the other end of capacitor C 11 connects the negative pole of diode D6 respectively; one end of the positive pole of diode D7 and capacitor C 13; the other end of capacitor C 13 connects the negative pole of diode D8 respectively; one end of the positive pole of diode D9 and capacitor C 15; the other end of capacitor C 15 connects the negative pole of diode D10 respectively; one end of resistance R 11; the other end of resistance R 13 in high voltage control and the drive circuit, another termination high-voltage output end+HV of resistance R 11.
The control drive circuit adopts the self-oscillation mode, it and formation high pressure FEEDBACK CONTROL link such as major control device adjustable reference source; The outside has control high pressure start and stop end, inside that overcurrent protection is arranged; Circuit structure novelty, simple.
Select that low noise, low temperature float, the paster components and parts of good stability for use; Adopt the multi-layer PCB layout, at utmost reduce overall dimension, weight reduction; Guarantee transformer line pack arrangement technology, technique for coiling and High-Voltage Insulation processing, make it reliable and stable.
Operation principle: form self-maintained circuit by the elementary main coil Lp1 of transformer TRF, feedback coil Lp2, triode T2 and capacitor C 2 etc.After connecting power supply, by oscillator work, elementary generation high-frequency pulse voltage, and be coupled to its secondary coil Ls1 by transformer TRF, the ac pulse voltage at its two ends produces high pressure behind cockcroft-walton voltage multiplier.Deliver to the control utmost point 1 pin of adjustable reference voltage source TL431 from the high pressure sampled signal of resistance R 12, resistance R 13 and resistance R 7 acquisitions, and the feedback circuit that constitutes via adjustable reference voltage source U1, triode T3 and triode T1 etc., the operating state of control generator, and then the output of control, stable high voltage.
Under the normal output situation, at the negative sampled voltage that is proportional to output current that resistance R 10 obtains, deficiency is so that triode T4 conducting, and this moment, triode T4 ended; When output current during greater than the output protection electric current, the negative sampled voltage that is proportional to output current in that resistance R 10 obtains makes triode T4 conducting; and then the negative electrode 3 pin current potentials of adjustable reference voltage source TL431 are reduced; triode T3, T1 end, thereby close oscillating circuit, play a protective role.
In addition, when start and stop control end R/S is low level or when unsettled, high pressure output is arranged.When start and stop control end R/S is high level, close the output high pressure; 1 pair of high frequency of oscillation alternating voltage of inductance L plays the isolation barrier effect, reduces high-frequency ac working pulse voltage to the interference of control circuit and supply power voltage.
Claims (1)
1. simple miniature fixedly positive output high-voltage power circuit, it is characterized in that: this circuit comprises high voltage control and drive circuit, current foldback circuit and high-voltage output circuit, the output of described high voltage control and drive circuit is connected with the input of high-voltage output circuit, the output of described high-voltage output circuit is connected with the input of current foldback circuit, and the output of described current foldback circuit is connected with the input of high voltage control and drive circuit;
An end of inductance L 1 meets power supply input+Vin respectively in described high voltage control and the drive circuit, one end of the emitter of triode T1 and resistance R 4, the other end of inductance L 1 connects the positive pole of capacitor C 1 respectively, different name end 1 pin of transformer TRF primary coil Lp1, the negative pole of capacitor C 1 meets input ground GND, end of the same name 2 pin of transformer TRF primary coil Lp1 connect the collector electrode of triode T2, different name end 3 pin of transformer TRF primary coil Lp2 connect the base stage of triode T2, end of the same name 4 pin of transformer TRF primary coil Lp2 connect an end of capacitor C 2 and resistance R 1 respectively by resistance R 2, the other end of capacitor C 2 links to each other with the emitter of triode T2 and meets input ground GND, the collector electrode of another termination triode T1 of resistance R 1, the base stage of triode T1 connects the collector electrode of triode T3 by resistance R 3, resistance R 5 and capacitor C 3 parallel connections, the base stage difference connecting resistance R5 of triode T3 and an end of resistance R 6, the other end of resistance R 6 links to each other with the emitter of triode T3 and meets input ground GND, the negative electrode 3 pin difference connecting resistance R4 of controlled a reference source U1 and the other end of resistance R 5, one end of capacitor C 4, the control utmost point 1 pin difference connecting resistance R7 of controlled a reference source U1 and an end of resistance R 12, the other end of capacitor C 4, anode 2 pin of controlled a reference source U1 link to each other with the other end of resistance R 7 and meet input ground GND, the end of the other end connecting resistance R13 of resistance R 12, start and stop control end R/S connects the positive pole of diode D11, and the negative pole of diode D11 connects the control utmost point 1 pin of controlled a reference source U1 by resistance R 8;
In the described current foldback circuit, the collector electrode of triode T4 connects negative electrode 3 pin of controlled a reference source U1 in high voltage control and the drive circuit, the emitter difference connecting resistance R9 of triode T4 and an end of capacitor C 5, the base stage of triode T4 links to each other with the other end of capacitor C 5 and meets input ground GND, and the other end of resistance R 9 connects high pressure output ground HG end by resistance R 10;
In the described high-voltage output circuit; different name end 5 pin of transformer TRF secondary high pressure coil Ls1 connect the negative pole of diode D1 respectively by capacitor C 6; one end of the positive pole of diode D2 and capacitor C 8; the other end of capacitor C 8 connects the negative pole of diode D3 respectively; one end of the positive pole of diode D4 and capacitor C 10; the other end of capacitor C 10 connects the negative pole of diode D5 respectively; one end of the positive pole of diode D6 and capacitor C 12; the other end of capacitor C 12 connects the negative pole of diode D7 respectively; one end of the positive pole of diode D8 and capacitor C 14; the other end of capacitor C 14 connects the negative pole of diode D9 and the positive pole of diode D10 respectively; end of the same name 6 pin of transformer TRF secondary high pressure coil Ls1 connect the positive pole of diode D1 respectively; one end of resistance R 14 and capacitor C 7; the other end of resistance R 14 is taken over the other end of resistance R 9 in the stream protective circuit; the other end of capacitor C 7 connects the negative pole of diode D2 respectively; one end of the positive pole of diode D3 and capacitor C 9; the other end of capacitor C 9 connects the negative pole of diode D4 respectively; one end of the positive pole of diode D5 and capacitor C 11; the other end of capacitor C 11 connects the negative pole of diode D6 respectively; one end of the positive pole of diode D7 and capacitor C 13; the other end of capacitor C 13 connects the negative pole of diode D8 respectively; one end of the positive pole of diode D9 and capacitor C 15; the other end of capacitor C 15 connects the negative pole of diode D10 respectively; one end of resistance R 11; the other end of resistance R 13 in high voltage control and the drive circuit, another termination high-voltage output end+HV of resistance R 11.
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| CN 201110278210 CN102332828B (en) | 2011-09-19 | 2011-09-19 | Simple micro fixed positive output high voltage power circuit |
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| CN 201110278210 CN102332828B (en) | 2011-09-19 | 2011-09-19 | Simple micro fixed positive output high voltage power circuit |
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| CN102332828A CN102332828A (en) | 2012-01-25 |
| CN102332828B true CN102332828B (en) | 2013-08-14 |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332514A (en) * | 2000-07-11 | 2002-01-23 | 索尼株式会社 | Switch power circuit for producing dc high voltage |
| CN202261035U (en) * | 2011-09-19 | 2012-05-30 | 东文高压电源（天津）有限公司 | Simple miniature fixed positive output high-voltage power supply circuit |
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| US20090316445A1 (en) * | 2006-06-26 | 2009-12-24 | Mowrer Matthew E | High Voltage Power Supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332514A (en) * | 2000-07-11 | 2002-01-23 | 索尼株式会社 | Switch power circuit for producing dc high voltage |
| CN202261035U (en) * | 2011-09-19 | 2012-05-30 | 东文高压电源（天津）有限公司 | Simple miniature fixed positive output high-voltage power supply circuit |
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Owner name: DONGWEN HIGH VOLTAGE POWER SUPPLY (TIANJIN) CO., L Free format text: FORMER NAME: TIANJIN DONGWEN HIGH-VOLTAGE POWER SUPPLY CO., LTD. |
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Address after: 300220, Tianjin, Hexi District, 20 Dongting Road, Chen Tong Technology Business District Service Center 415-3 Patentee after: Wen Dong high voltage power supply (Tianjin) Limited by Share Ltd Address before: 300171, blue mansion, No. eleven, No. 47, Hedong Road, Hedong District, Tianjin, 8F Patentee before: Tianjin Dongwen High Voltage Power Supply Plant |