CN101834528A - Negative output fixed constant-current type electric breakdown high-voltage module power supply - Google Patents
Negative output fixed constant-current type electric breakdown high-voltage module power supply Download PDFInfo
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Abstract
The invention relates to a negative output fixed constant-current type electric breakdown high-voltage module power supply which comprises a power supply circuit packaged in a shell. A plurality of lead wires are welded on the power supply circuit, and the power supply circuit comprises a control circuit, a drive circuit, a voltage-stabilizing circuit, a high-voltage feedback circuit, a current feedback circuit and a combined high-voltage output circuit, wherein the voltage-stabilizing circuit is connected with the drive circuit through the control circuit, the drive circuit is respectively connected with the high-voltage feedback circuit, a current feedback circuit and the combined high-voltage output circuit, and the combined high-voltage output circuit is respectively connected with the high-voltage feedback circuit and the current feedback circuit. The invention has the advantages that ignition and maintenance of two high voltages are combined to output so that the use is convenient; output overvoltage protection is available; after a load is ignited, the output current is fixed and constant so that long-term stability is good; and the invention has small appearance size, light weight and easy installation of a PCB.
Description
Technical field
The present invention relates to a kind of high-tension ignition that is used for fuel oil, combustion gas, the negative output fixed constant-current type electric breakdown high-voltage module power supply in the aspect instrument and equipments such as commercial Application, scientific research, medical treatment, aviation such as ignite of gas laser.
Background technology
Along with development in science and technology, the expansion of the market demand, the user requires more and more higher to the quality of power supply product, performance, volume etc., the power supply product of the gas laser in fields such as fuel oil, combustion gas high-tension ignition and the scientific research of existing industrial aspect, medical treatment, aviation etc., though kind is a lot, have much to be the Combination Design of single supply, it is bigger that ubiquity power volume, problems such as it is unreliable to ignite, and poor stability and long-term work are fragile.
Summary of the invention
In view of the deficiency that prior art exists, the invention provides a kind of volume little, be easy to PCB installation, reliability and the high negative output fixed constant-current type electric breakdown high-voltage module power supply of stability.
The present invention for achieving the above object, the technical scheme of being taked is: a kind of negative output fixed constant-current type electric breakdown high-voltage module power supply, comprise the power circuit that is encapsulated in the housing, be welded with several lead-in wires on the power circuit, it is characterized in that: described power circuit comprises control circuit, drive circuit, voltage stabilizing circuit, the high pressure feedback circuit, current feedback circuit and combined high pressure output circuit, described voltage stabilizing circuit is connected with drive circuit by control circuit, described drive circuit respectively with the high pressure feedback circuit, current feedback circuit and combined high pressure output circuit connect, described combined high pressure output circuit respectively with the high pressure feedback circuit, current feedback circuit connects;
1 pin of control chip U1 in the described control circuit, 3 pin, 10 pin link to each other with 12 pin and meet input ground GND, the 5 pin difference connecting resistance R2 of control chip U1 and an end of capacitor C 5,7 pin of another termination control chip U1 of resistance R 2, another termination input ground GND of capacitor C 5,6 pin of control chip U1 meet input ground GND by resistance R 3,8 pin of control chip U1 meet input ground GND by capacitor C 6, resistance R 4 is in parallel with capacitor C 7,9 pin of one termination control chip U1 of resistance R 4, another termination input ground GND of resistance R 4,13 pin of control chip U1 link to each other with 15 pin and meet in-line power end Vcc, the end of the 16 pin difference connecting resistance R1 of control chip U1 and the positive pole of capacitor C 4, and as reference voltage output end Vref, 2 pin of another termination control chip U1 of resistance R 1, the negative pole of capacitor C 1 meet input ground GND;
A termination of inductance L 1 power supply input+Vin in the described drive circuit, the other end of inductance L 1 connects the positive pole of capacitor C 1 respectively, the b end of transformer TRF2 primary coil Lp1 and the c end of Lp2, the negative pole input ground GND of capacitor C 1, the a end of transformer TRF2 primary coil Lp1 connects the drain electrode of triode T1 and an end of resistance R 10 respectively, the other end of resistance R 10 is held the drain electrode that links to each other and meet triode T2 by capacitor C 8 with the d of transformer TRF2 primary coil Lp2,14 pin of control chip U1 in a termination control circuit of transformer TRF1 primary coil Lp, 11 pin of control chip U1 in the b termination control circuit of transformer TRF1 primary coil Lp, the end of the 1 end difference connecting resistance R6 of transformer TRF1 secondary coil Ls1 and the negative pole of diode D1, the other end of the positive pole of diode D1 and resistance R 6 and an end of resistance R 8 link to each other and connect the grid of triode T1,2 ends of transformer TRF1 secondary coil Ls1 link to each other with the source electrode of the other end of resistance R 8 and triode T1 and meet input ground GND, the end of the 3 ends difference connecting resistance R7 of transformer TRF1 secondary coil Ls2 and the negative pole of diode D2, the other end of the positive pole of diode D2 and resistance R 7 and an end of resistance R 9 link to each other and connect the grid of triode T2, and 4 ends of transformer TRF1 secondary coil Ls2 link to each other with the source electrode of the other end of resistance R 9 and triode T2 and meet input ground GND;
Input+the Vin that powers in the described voltage stabilizing circuit connects 1 pin of voltage stabilizing chip U2, the positive pole of capacitor C 2 and the negative pole of diode D3 respectively by resistance R 5, the positive pole of diode D3 connects 2 pin of voltage stabilizing chip U2 and the positive pole of capacitor C 3 respectively, and as in-line power end Vcc, the negative pole of the negative pole of capacitor C 2 and capacitor C 3 and 3 pin of voltage stabilizing chip U2 link to each other and meet input ground GND;
Resistance R 16 is in parallel with capacitor C 12 in the described high pressure feedback circuit, one end of resistance R 16 is by an end of resistance R 15 difference connecting resistance R13 and resistance R 14,5 pin of control chip U3, another termination reference voltage output end Vref of resistance R 14,6 pin of control chip U3 connect an end of capacitor C 11 and resistance R 12 respectively, the other end of resistance R 12 and resistance R 13 links to each other and meets input ground GND, 7 pin of control chip U3 connect the other end of capacitor C 11 respectively, one end of the negative pole of diode D5 and resistance R 11, the positive pole of diode D5 link to each other with the other end of resistance R 11 and connection control circuit in 9 pin of control chip U1;
In parallel behind diode D6 and the diode D7 series aiding connection in the described current feedback circuit with resistance R 21 and capacitor C 22, the negative pole of diode D7 meets high pressure output ground HVG, the positive pole of diode D6 connects an end of capacitor C 10 and resistance R 18 respectively by resistance R 17, another termination input ground GND of capacitor C 10, the other end of resistance R 18 connects an end of capacitor C 9 respectively, 2 pin of control chip U3,3 pin of control chip U3 meet reference voltage output end Vref by resistance R 19 respectively, meet input ground GND by resistance R 20,1 pin of control chip U3 connects the other end of capacitor C 9 and the negative pole of diode D4 respectively, 9 pin of control chip U1 in the anodal connection control circuit of diode D4,4 pin of control chip U3 meet input ground GND, and 8 pin of control chip U3 meet in-line power end Vcc
1 end of transformer TRF2 secondary high pressure coil Ls connects an end of capacitor C 19 and capacitor C 13 respectively in the described combined high pressure output circuit, the other end of capacitor C 19 connects the positive pole of diode D15 and the negative pole of diode D16 respectively, the negative pole of diode D15 connects an end of capacitor C 20 and 2 ends of transformer TRF2 secondary high pressure coil Ls respectively, the other end of capacitor C 20 connects the positive pole of diode D16 respectively, one end of capacitor C 21, one end of resistance R 22, the other end of resistance R 16 in the high pressure feedback circuit, the other end of capacitor C 21 connects the positive pole of diode D6 in 2 ends of transformer TRF2 secondary high pressure coil Ls and the current feedback circuit respectively, the negative pole of another terminating diode D8 of resistance R 22, resistance R 25 and resistance R 26 parallel connections, the positive pole difference connecting resistance R24 of diode D8 and an end of resistance R 25, another termination combination negative high voltage output-HV.Out of resistance R 25, the other end of capacitor C 13 connects an end of capacitor C 14 respectively, the negative pole of the positive pole of diode D9 and diode D10, the other end of capacitor C 14 connects an end of capacitor C 15 respectively, the negative pole of the positive pole of diode D11 and diode D12, the other end of capacitor C 15 connects the positive pole of diode D13 and the negative pole of diode D14 respectively, the negative pole of diode D9 connects an end of capacitor C 16 and 2 ends of transformer TRF2 secondary high pressure coil Ls respectively, the other end of capacitor C 16 connects the positive pole of diode D10 respectively, one end of the negative pole of diode D11 and capacitor C 17, the other end of capacitor C 17 connects the positive pole of diode D12 respectively, one end of the negative pole of diode D13 and capacitor C 18, the other end of capacitor C 18 connects the positive pole of diode D14 and an end of resistance R 23 respectively, and the other end of resistance R 23 links to each other with the other end of resistance R 24; Described several lead-in wire (2) is exposed to outside the housing (1), and a side is two lead-in wires, and by direct current supply input+Vin, input ground GND sequence arrangement, opposite side is two lead-in wires, by combination negative high voltage output-HV.Out, high pressure output ground HVG sequence arrangement.
The invention has the beneficial effects as follows: ignite, keep two-supremes and press the output that unites two into one, easy to use; Has output over-voltage protection; Output current was fixedly constant current output after load was ignited, 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 schematic appearance of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the right view of Fig. 1.
Fig. 4 is that circuit of the present invention connects block diagram and as Figure of abstract.
Fig. 5 is circuit theory diagrams of the present invention.
Embodiment
As Fig. 1,2,3,4, shown in 5, negative output fixed constant-current type electric breakdown high-voltage module power supply, comprise the power circuit that is encapsulated in the housing 1, be welded with several input supply lines and high-voltage output line 2 on the power circuit, power circuit comprises control circuit, drive circuit, voltage stabilizing circuit, the high pressure feedback circuit, current feedback circuit and combined high pressure output circuit, voltage stabilizing circuit is connected with drive circuit by control circuit, drive circuit respectively with the high pressure feedback circuit, current feedback circuit and combined high pressure output circuit connect, the combined high pressure output circuit respectively with the high pressure feedback circuit, current feedback circuit connects;
1 pin of control chip U1 in the control circuit, 3 pin, 10 pin link to each other with 12 pin and meet input ground GND, the 5 pin difference connecting resistance R2 of control chip U1 and an end of capacitor C 5,7 pin of another termination control chip U1 of resistance R 2, another termination input ground GND of capacitor C 5,6 pin of control chip U1 meet input ground GND by resistance R 3,8 pin of control chip U1 meet input ground GND by capacitor C 6, resistance R 4 is in parallel with capacitor C 7,9 pin of one termination control chip U1 of resistance R 4, another termination input ground GND of resistance R 4,13 pin of control chip U1 link to each other with 15 pin and meet in-line power end Vcc, the end of the 16 pin difference connecting resistance R1 of control chip U1 and the positive pole of capacitor C 4, and as reference voltage output end Vref, 2 pin of another termination control chip U1 of resistance R 1, the negative pole of capacitor C 1 meet input ground GND;
A termination of inductance L 1 power supply input+Vin in the drive circuit, the other end of inductance L 1 connects the positive pole of capacitor C 1 respectively, the b end of transformer TRF2 primary coil Lp1 and the c end of Lp2, the negative pole input ground GND of capacitor C 1, the a end of transformer TRF2 primary coil Lp1 connects the drain electrode of triode T1 and an end of resistance R 10 respectively, the other end of resistance R 10 is held the drain electrode that links to each other and meet triode T2 by capacitor C 8 with the d of transformer TRF2 primary coil Lp2,14 pin of control chip U1 in a termination control circuit of transformer TRF1 primary coil Lp, 11 pin of control chip U1 in the b termination control circuit of transformer TRF1 primary coil Lp, the end of the 1 end difference connecting resistance R6 of transformer TRF1 secondary coil Ls1 and the negative pole of diode D1, the other end of the positive pole of diode D1 and resistance R 6 and an end of resistance R 8 link to each other and connect the grid of triode T1,2 ends of transformer TRF1 secondary coil Ls1 link to each other with the source electrode of the other end of resistance R 8 and triode T1 and meet input ground GND, the end of the 3 ends difference connecting resistance R7 of transformer TRF1 secondary coil Ls2 and the negative pole of diode D2, the other end of the positive pole of diode D2 and resistance R 7 and an end of resistance R 9 link to each other and connect the grid of triode T2, and 4 ends of transformer TRF1 secondary coil Ls2 link to each other with the source electrode of the other end of resistance R 9 and triode T2 and meet input ground GND;
Input+the Vin that powers in the voltage stabilizing circuit connects 1 pin of voltage stabilizing chip U2, the positive pole of capacitor C 2 and the negative pole of diode D3 respectively by resistance R 5, the positive pole of diode D3 connects 2 pin of voltage stabilizing chip U2 and the positive pole of capacitor C 3 respectively, and as in-line power end Vcc, the negative pole of the negative pole of capacitor C 2 and capacitor C 3 and 3 pin of voltage stabilizing chip U2 link to each other and meet input ground GND;
Resistance R 16 is in parallel with capacitor C 12 in the high pressure feedback circuit, one end of resistance R 16 is by an end of resistance R 15 difference connecting resistance R13 and resistance R 14,5 pin of control chip U3, another termination reference voltage output end Vref of resistance R 14,6 pin of control chip U3 connect an end of capacitor C 11 and resistance R 12 respectively, the other end of resistance R 12 and resistance R 13 links to each other and meets input ground GND, 7 pin of control chip U3 connect the other end of capacitor C 11 respectively, one end of the negative pole of diode D5 and resistance R 11, the positive pole of diode D5 link to each other with the other end of resistance R 11 and connection control circuit in 9 pin of control chip U1;
In parallel behind diode D6 and the diode D7 series aiding connection in the current feedback circuit with resistance R 21 and capacitor C 22, the negative pole of diode D7 meets high pressure output ground HVG, the positive pole of diode D6 connects an end of capacitor C 10 and resistance R 18 respectively by resistance R 17, another termination input ground GND of capacitor C 10, the other end of resistance R 18 connects an end of capacitor C 9 respectively, 2 pin of control chip U3,3 pin of control chip U3 meet reference voltage output end Vref by resistance R 19 respectively, meet input ground GND by resistance R 20,1 pin of control chip U3 connects the other end of capacitor C 9 and the negative pole of diode D4 respectively, 9 pin of control chip U1 in the anodal connection control circuit of diode D4,4 pin of control chip U3 meet input ground GND, and 8 pin of control chip U3 meet in-line power end Vcc
1 end of transformer TRF2 secondary high pressure coil Ls connects an end of capacitor C 19 and capacitor C 13 respectively in the combined high pressure output circuit, the other end of capacitor C 19 connects the positive pole of diode D15 and the negative pole of diode D16 respectively, the negative pole of diode D15 connects an end of capacitor C 20 and 2 ends of transformer TRF2 secondary high pressure coil Ls respectively, the other end of capacitor C 20 connects the positive pole of diode D16 respectively, one end of capacitor C 21, one end of resistance R 22, the other end of resistance R 16 in the high pressure feedback circuit, the other end of capacitor C 21 connects the positive pole of diode D6 in 2 ends of transformer TRF2 secondary high pressure coil Ls and the current feedback circuit respectively, the negative pole of another terminating diode D8 of resistance R 22, resistance R 25 and resistance R 26 parallel connections, the positive pole difference connecting resistance R24 of diode D8 and an end of resistance R 25, another termination combination negative high voltage output-HV.Out of resistance R 25, the other end of capacitor C 13 connects an end of capacitor C 14 respectively, the negative pole of the positive pole of diode D9 and diode D10, the other end of capacitor C 14 connects an end of capacitor C 15 respectively, the negative pole of the positive pole of diode D11 and diode D12, the other end of capacitor C 15 connects the positive pole of diode D13 and the negative pole of diode D14 respectively, the negative pole of diode D9 connects an end of capacitor C 16 and 2 ends of transformer TRF2 secondary high pressure coil Ls respectively, the other end of capacitor C 16 connects the positive pole of diode D10 respectively, one end of the negative pole of diode D11 and capacitor C 17, the other end of capacitor C 17 connects the positive pole of diode D12 respectively, one end of the negative pole of diode D13 and capacitor C 18, the other end of capacitor C 18 connects the positive pole of diode D14 and an end of resistance R 23 respectively, and the other end of resistance R 23 links to each other with the other end of resistance R 24;
The push-pull type oscillating circuit that employing is made up of the primary coil of control chip U1, driving transformer TRF1, triode T1, triode T2 and oscillation transformer TRF2 etc., the built-in oscillation frequency, by regulate, the control impuls width, reach the purpose of stable output.Circuit structure is simple, ignites, keeps two-supremes and press the output that unites two into one, and both automatically switch.Have output over-voltage protection, and the back of igniting is fixedly constant current output.
Select that low noise, low temperature float for use, the control chip of good stability and other components and parts; Rational PCB layout is guaranteed the independent pathway of each signal to reduce crosstalking mutually between each signal; At aspects such as transformer line pack arrangement technology, assembly technology and High-Voltage Insulation processing strict demand is arranged, guarantee reliability and stability that power supply is long-term.
This electric breakdown high-voltage module power supply adopts metal shell, and four jiaos of housing have via hole, are convenient to user's installation; Add complete deposited copper PCB cover plate, and, good electromagnetic shielding action is arranged, improve the antijamming capability of power supply frame ground.
Several lead-in wires 2 are exposed to outside the housing 1, and a side is two lead-in wires, and by direct current supply input+Vin, input ground GND sequence arrangement, opposite side is two lead-in wires, by combination negative high voltage output-HV.Out, high pressure output ground HVG sequence arrangement.
Operation principle: the integrated control chip U1 of PWM is adopted in the core of circuit, its operating frequency height, and operating voltage range is big, and totem pillar export structure constitutes push-pull type DC/DC converter circuit with drive circuit.
From 11 pin of control chip U1 and the PWM oscillation pulse signal of 14 pin both-ends output, directly connect isolation drive transformer TRF1, this transformer can make secondary level shift, can isolate with the main converter circuit again, by couple drive MOS pliotron T1 and T2.
The higher-order of oscillation pulse voltage that produces in the primary coil of main transformer is coupled to by switch transformer TRF2 that it is secondary, and secondary high-tension coil divides two-way to boost, and one tunnel output high pressure is very high, as the high pressure that ignites; High pressure is kept in another road lower work of output.Before load was breakdown, high pressure output is lower than kept high pressure, and diode D8 is reverse, and high pressure output is very high; After load was breakdown, high-voltage power output was automaticallyed switch and is provided by resistance R 22 and diode D8 by keeping voltage.
On capacitor C 21 output keep the high pressure feedback circuit of high pressure by forming by error amplifier U3B etc., control 9 pin of integrated manipulator U1, reach the purpose that limits its ceiling voltage; The output current sampled signal that obtains on resistance R 21 by the current feedback circuit of being made up of error amplifier U3A etc., is controlled 9 pin of integrated manipulator U1 equally, reaches the purpose of stablizing output current.
Claims (2)
1. negative output fixed constant-current type electric breakdown high-voltage module power supply, comprise the power circuit that is encapsulated in the housing (1), be welded with several output leads (2) on the power circuit, it is characterized in that: described power circuit comprises control circuit, drive circuit, voltage stabilizing circuit, the high pressure feedback circuit, current feedback circuit and combined high pressure output circuit, described voltage stabilizing circuit is connected with drive circuit by control circuit, described drive circuit respectively with the high pressure feedback circuit, current feedback circuit and combined high pressure output circuit connect, described combined high pressure output circuit respectively with the high pressure feedback circuit, current feedback circuit connects;
1 pin of control chip U1 in the described control circuit, 3 pin, 10 pin link to each other with 12 pin and meet input ground GND, the 5 pin difference connecting resistance R2 of control chip U1 and an end of capacitor C 5,7 pin of another termination control chip U1 of resistance R 2, another termination input ground GND of capacitor C 5,6 pin of control chip U1 meet input ground GND by resistance R 3,8 pin of control chip U1 meet input ground GND by capacitor C 6, resistance R 4 is in parallel with capacitor C 7,9 pin of one termination control chip U1 of resistance R 4, another termination input ground GND of resistance R 4,13 pin of control chip U1 link to each other with 15 pin and meet in-line power end Vcc, the end of the 16 pin difference connecting resistance R1 of control chip U1 and the positive pole of capacitor C 4, and as reference voltage output end Vref, 2 pin of another termination control chip U1 of resistance R 1, the negative pole of capacitor C 1 meet input ground GND;
A termination of inductance L 1 power supply input+Vin in the described drive circuit, the other end of inductance L 1 connects the positive pole of capacitor C 1 respectively, the b end of transformer TRF2 primary coil Lp1 and the c end of Lp2, the negative pole input ground GND of capacitor C 1, the a end of transformer TRF2 primary coil Lp1 connects the drain electrode of triode T1 and an end of resistance R 10 respectively, the other end of resistance R 10 is held the drain electrode that links to each other and meet triode T2 by capacitor C 8 with the d of transformer TRF2 primary coil Lp2,14 pin of control chip U1 in a termination control circuit of transformer TRF1 primary coil Lp, 11 pin of control chip U1 in the b termination control circuit of transformer TRF1 primary coil Lp, the end of the 1 end difference connecting resistance R6 of transformer TRF1 secondary coil Ls1 and the negative pole of diode D1, the other end of the positive pole of diode D1 and resistance R 6 and an end of resistance R 8 link to each other and connect the grid of triode T1,2 ends of transformer TRF1 secondary coil Ls1 link to each other with the source electrode of the other end of resistance R 8 and triode T1 and meet input ground GND, the end of the 3 ends difference connecting resistance R7 of transformer TRF1 secondary coil Ls2 and the negative pole of diode D2, the other end of the positive pole of diode D2 and resistance R 7 and an end of resistance R 9 link to each other and connect the grid of triode T2, and 4 ends of transformer TRF1 secondary coil Ls2 link to each other with the source electrode of the other end of resistance R 9 and triode T2 and meet input ground GND;
Input+the Vin that powers in the described voltage stabilizing circuit connects 1 pin of voltage stabilizing chip U2, the positive pole of capacitor C 2 and the negative pole of diode D3 respectively by resistance R 5, the positive pole of diode D3 connects 2 pin of voltage stabilizing chip U2 and the positive pole of capacitor C 3 respectively, and as in-line power end Vcc, the negative pole of the negative pole of capacitor C 2 and capacitor C 3 and 3 pin of voltage stabilizing chip U2 link to each other and meet input ground GND;
Resistance R 16 is in parallel with capacitor C 12 in the described high pressure feedback circuit, one end of resistance R 16 is by an end of resistance R 15 difference connecting resistance R13 and resistance R 14,5 pin of control chip U3, another termination reference voltage output end Vref of resistance R 14,6 pin of control chip U3 connect an end of capacitor C 11 and resistance R 12 respectively, the other end of resistance R 12 and resistance R 13 links to each other and meets input ground GND, 7 pin of control chip U3 connect the other end of capacitor C 11 respectively, one end of the negative pole of diode D5 and resistance R 11, the positive pole of diode D5 link to each other with the other end of resistance R 11 and connection control circuit in 9 pin of control chip U1;
In parallel behind diode D6 and the diode D7 series aiding connection in the described current feedback circuit with resistance R 21 and capacitor C 22, the negative pole of diode D7 meets high pressure output ground HVG, the positive pole of diode D6 connects an end of capacitor C 10 and resistance R 18 respectively by resistance R 17, another termination input ground GND of capacitor C 10, the other end of resistance R 18 connects an end of capacitor C 9 respectively, 2 pin of control chip U3,3 pin of control chip U3 meet reference voltage output end Vref by resistance R 19 respectively, meet input ground GND by resistance R 20,1 pin of control chip U3 connects the other end of capacitor C 9 and the negative pole of diode D4 respectively, 9 pin of control chip U1 in the anodal connection control circuit of diode D4,4 pin of control chip U3 meet input ground GND, and 8 pin of control chip U3 meet in-line power end Vcc;
1 end of transformer TRF2 secondary high pressure coil Ls connects an end of capacitor C 19 and capacitor C 13 respectively in the described combined high pressure output circuit, the other end of capacitor C 19 connects the positive pole of diode D15 and the negative pole of diode D16 respectively, the negative pole of diode D15 connects an end of capacitor C 20 and 2 ends of transformer TRF2 secondary high pressure coil Ls respectively, the other end of capacitor C 20 connects the positive pole of diode D16 respectively, one end of capacitor C 21, one end of resistance R 22, the other end of resistance R 16 in the high pressure feedback circuit, the other end of capacitor C 21 connects the positive pole of diode D6 in 2 ends of transformer TRF2 secondary high pressure coil Ls and the current feedback circuit respectively, the negative pole of another terminating diode D8 of resistance R 22, resistance R 25 and resistance R 26 parallel connections, the positive pole difference connecting resistance R24 of diode D8 and an end of resistance R 25, another termination combination negative high voltage output-HV.Out of resistance R 25, the other end of capacitor C 13 connects an end of capacitor C 14 respectively, the negative pole of the positive pole of diode D9 and diode D10, the other end of capacitor C 14 connects an end of capacitor C 15 respectively, the negative pole of the positive pole of diode D11 and diode D12, the other end of capacitor C 15 connects the positive pole of diode D13 and the negative pole of diode D14 respectively, the negative pole of diode D9 connects an end of capacitor C 16 and 2 ends of transformer TRF2 secondary high pressure coil Ls respectively, the other end of capacitor C 16 connects the positive pole of diode D10 respectively, one end of the negative pole of diode D11 and capacitor C 17, the other end of capacitor C 17 connects the positive pole of diode D12 respectively, one end of the negative pole of diode D13 and capacitor C 18, the other end of capacitor C 18 connects the positive pole of diode D14 and an end of resistance R 23 respectively, and the other end of resistance R 23 links to each other with the other end of resistance R 24.
2. negative output fixed constant-current type electric breakdown high-voltage module power supply according to claim 1, it is characterized in that: described several lead-in wires (2) are exposed to outside the housing (1), one side is two lead-in wires (2), by direct current supply input+Vin, input ground GND sequence arrangement, opposite side is two lead-in wires (2), by combination negative high voltage output-HV.Out, high pressure output ground HVG sequence arrangement.
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| CN102290990A (en) * | 2011-07-29 | 2011-12-21 | 王金凤 | High voltage power supply for radiation meter |
| GB2501105A (en) * | 2012-04-12 | 2013-10-16 | Eltek As | AC-DC converter overvoltage protection circuit |
| 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 |
| CN111049386A (en) * | 2018-10-12 | 2020-04-21 | 松下知识产权经营株式会社 | Power supply device |
| CN111322215A (en) * | 2020-03-31 | 2020-06-23 | 西安微电子技术研究所 | Voltage self-adaptive switching circuit and method |
| CN114513872A (en) * | 2021-12-30 | 2022-05-17 | 杭州春来科技有限公司 | Combined hollow cathode lamp driving circuit for heavy metal analysis |
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2010
- 2010-05-28 CN CN201010185647A patent/CN101834528A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102290990A (en) * | 2011-07-29 | 2011-12-21 | 王金凤 | High voltage power supply for radiation meter |
| GB2501105A (en) * | 2012-04-12 | 2013-10-16 | Eltek As | AC-DC converter overvoltage protection circuit |
| US9425607B2 (en) | 2012-04-12 | 2016-08-23 | Eltek As | AC-DC converter device comprising an overvoltage protection circuit |
| 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 |
| CN111049386A (en) * | 2018-10-12 | 2020-04-21 | 松下知识产权经营株式会社 | Power supply device |
| CN111322215A (en) * | 2020-03-31 | 2020-06-23 | 西安微电子技术研究所 | Voltage self-adaptive switching circuit and method |
| CN111322215B (en) * | 2020-03-31 | 2021-04-27 | 西安微电子技术研究所 | Voltage self-adaptive switching circuit and method |
| CN114513872A (en) * | 2021-12-30 | 2022-05-17 | 杭州春来科技有限公司 | Combined hollow cathode lamp driving circuit for heavy metal analysis |
| CN114513872B (en) * | 2021-12-30 | 2023-08-01 | 杭州春来科技有限公司 | Combined hollow cathode lamp driving circuit for heavy metal analysis |
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Application publication date: 20100915 |