CN101867307B - Ozone high-voltage power supply - Google Patents
Ozone high-voltage power supply Download PDFInfo
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- CN101867307B CN101867307B CN2010102238529A CN201010223852A CN101867307B CN 101867307 B CN101867307 B CN 101867307B CN 2010102238529 A CN2010102238529 A CN 2010102238529A CN 201010223852 A CN201010223852 A CN 201010223852A CN 101867307 B CN101867307 B CN 101867307B
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Abstract
The invention relates to an ozone high-voltage power supply which comprises a power supply whole-machine box body and a power supply circuit in the box body, wherein the power supply circuit comprises a control circuit, a current feedback circuit, an over-temperature protection circuit, an input overvoltage protection circuit, a power supplying circuit and a driving and output circuit, wherein the control circuit is respectively connected with the current feedback circuit, the over-temperature protection circuit, the input overvoltage protection circuit, the power supplying circuit and the driving and output circuit, the power supplying circuit is connected with the driving and output circuit, and the driving and output circuit is connected with the current feedback circuit. The invention has the advantages that the ozone high-voltage power supply has high working frequency and low whole-machine energy consumption, has protecting functions on overvoltage input, overheating power conversion, over-current output and the like, is equipped with output power manual fine adjustment and warning indication and has good long-term working stability, lighter weight and attractive appearance.
Description
Technical field
The present invention relates to a kind of ozone high-voltage power supply that is widely used in fields such as sewage disposal and the drinking water disinfection in the environmental protection, industrial oxidation, medical and health, food.
Background technology
Present domestic conventional ozone high-voltage power supply, operating frequency is lower, and energy consumption is bigger, and the ozone generating amount is low, if will improve ozone amount, then certainly will improve input power, in energy consumption and operating cost increase, also makes the corresponding increase of volume, weight of power supply complete machine.
Summary of the invention
In view of the problem that prior art exists, the invention provides that a kind of operating frequency is high, power consumption is low, (500W) ozone high-voltage power supply of good reliability.
The present invention is for realizing above-mentioned purpose; The technical scheme of being taked is: a kind of ozone high-voltage power supply; Comprise the power circuit in power supply complete machine casing and the casing; It is characterized in that: said power circuit comprises control circuit, current feedback circuit, thermal-shutdown circuit, protection circuit against input over-voltage, power supply circuits, driving and output circuit; Said control circuit is connected with current feedback circuit, thermal-shutdown circuit, protection circuit against input over-voltage, power supply circuits, driving and output circuit respectively, and said power supply circuits are connected with driving and output circuit, and said driving and output circuit are connected with current feedback circuit;
13 pin of control chip U1 link to each other with 15 pin and meet inner voltage stabilizing feeder ear Vcc in the said control circuit, and 3 pin of control chip U1,10 pin and 12 pin link to each other and meet control ground GND1, and 1 pin of control chip U1 links to each other with 9 pin and through capacitor C 4 GND1 with connecing control; Resistance R 6 is parallelly connected with capacitor C 5; The 2 pin difference connecting resistance R5 of control chip U1 and an end of resistance R 6,16 pin of control chip U1 connect the anodal of capacitor C 3 and as internal reference voltage end Vref, the negative pole of capacitor C 3 links to each other with the other end of resistance R 6 and meets control ground GND1; The positive pole of capacitor C 1 meets inner voltage stabilizing feeder ear Vcc; The negative pole of capacitor C 1 meets control ground GND1, and 5 pin of control chip U1 connect an end of capacitor C 2 and connect 7 pin of control chip U1 through resistance R 2, and 6 pin of control chip U1 connect 2 ends of adjustable resistance W1 through resistance R 1; 2 ends of adjustable resistance W1 link to each other with 3 ends; 1 end of adjustable resistance W1 links to each other with the other end of capacitor C 2 and meets control ground GND1,1 pin of the control chip U2A also other end of connecting resistance R5 that links to each other with 2 pin, the end of the 7 pin connecting resistance R3 of control chip U2B; Resistance R 7 is parallelly connected with capacitor C 6; The 6 pin difference connecting resistance R7 of control chip U2B and an end of resistance R 4, the other end of resistance R 3, the positive pole of diode D3,3 pin of another termination control chip U2A of resistance R 4,5 pin of control chip U2B meet internal reference voltage end Vref; 4 pin of control chip U2A meet control ground GND1, and 8 pin of control chip U2A meet inner voltage stabilizing feeder ear Vcc;
An end of resistance R 26 connects the negative pole of diode D4 and the positive pole of diode D5 respectively through capacitor C 14 in the said current feedback circuit; The positive pole of another terminating diode D4 of resistance R 26, the end of the negative pole difference connecting resistance R27 of diode D5 and the positive pole of capacitor C 13, the negative pole of capacitor C 13 meets high pressure output ground G; The other end difference connecting resistance R28 of resistance R 27 and an end of resistance R 29; 2 ends of another termination adjustable resistance W4 of resistance R 28,2 ends of adjustable resistance W4 link to each other with 3 ends, the 1 termination output ground G of adjustable resistance W4; The other end of resistance R 29 connects 1 pin of photoelectrical coupler U5 and an end of capacitor C 15 respectively; 2 pin of photoelectrical coupler U5 link to each other with the other end of capacitor C 15 and meet output ground G, and 3 pin of photoelectrical coupler U5 connect control ground GND1,8 pin of control chip U1 in the 4 pin connection control circuits of photoelectrical coupler U5;
Resistance R 25 is parallelly connected with capacitor C 9 in the said thermal-shutdown circuit, and 5 pin of control chip U4B are through resistance 15 connecting resistance R14 and an end of resistance R 25, the base stage of triode T5 respectively, and another termination of resistance R 14 meets inner voltage stabilizing feeder ear Vcc; The other end of resistance R 25 links to each other with the collector electrode of triode T5 and meets control ground GND1, and resistance R 17 is parallelly connected with capacitor C 11, the 6 pin difference connecting resistance R16 of control chip U4B and an end of resistance R 17; Another termination control ground GND1 of resistance R 16; The end of the 7 pin difference connecting resistance R20 of control chip U4B, the other end of resistance R 17,2 pin of another termination control chip U4A of resistance R 20, resistance R 19 is parallelly connected with capacitor C 12; The 3 pin difference connecting resistance R21 of control chip U4A and an end of resistance R 18, the positive pole of capacitor C 12; The negative pole of capacitor C 12 meets control ground GND1,2 ends of another termination adjustable resistance W3 of resistance R 18, and 2 ends of adjustable resistance W3 link to each other with 3 ends; The inner voltage stabilizing feeder ear of 1 termination of adjustable resistance W3 Vcc; The end of the 1 pin difference connecting resistance R22 of control chip U4A and the other end of resistance R 21, the end of the other end difference connecting resistance R23 of resistance R 22, the base stage of triode T4, the other end of resistance R 23 links to each other with the emitter of triode T4 and meets control ground GND1; The negative pole of diode D1 in the negative pole of the collector electrode difference sending and receiving optical diode D3 of triode T4, the control circuit; The positive pole of light-emitting diode D3 meets in-line power end V2 through resistance R 24, and 4 pin of control chip U4A meet control ground GND1, and 8 pin of control chip U4A meet inner voltage stabilizing feeder ear Vcc; The positive pole of capacitor C 10 meets inner voltage stabilizing feeder ear Vcc, and the negative pole of capacitor C 10 meets control ground GND1;
2 pin of control chip U3A meet internal reference voltage end Vref through resistance R 8 in the said protection circuit against input over-voltage; The 3 pin difference connecting resistance R9 of control chip U3A and an end of resistance R 10; The other end of resistance R 9 connects the positive pole of capacitor C 7, an end of resistance R 11,1 end of adjustable resistance W2 respectively; 3 ends of adjustable resistance W2 link to each other with 2 ends and with meet control ground GND1 after the negative pole of capacitor C 7 links to each other; The positive pole of another termination voltage stabilizing didoe D2 of resistance R 11, the negative pole of voltage stabilizing didoe D2 meets in-line power end V2, the end of the 1 pin difference connecting resistance R12 of control chip U3A, the other end of resistance R 10; The end of the other end difference connecting resistance R13 of resistance R 12 and the base stage of triode T3; The other end of resistance R 13 links to each other with the emitter of triode T3 and meets control ground GND1, and the collector electrode of triode T3 connects 8 pin of control chip U1 in the positive pole, control circuit of capacitor C 8 respectively, and the negative pole of capacitor C 8 meets control ground GND1; 4 pin of control chip U3A meet control ground GND1, and 8 pin of control chip U3A meet inner voltage stabilizing feeder ear Vcc;
The L of Alternating Current Power Supply end connects 1 pin of input filter inductance L1 in the said power supply circuits through protective tube BX; 2 pin of the N termination input filter inductance L1 of Alternating Current Power Supply; 3 pin of input filter inductance L1 connect 1 pin of rectifier bridge BRIDGE1,1 end of transformer TRF3 primary coil respectively; 5 pin of input filter inductance L1 connect 3 pin of rectifier bridge BRIDGE1,2 ends of transformer TRF3 primary coil respectively, and 4 pin of input filter inductance L1 meet the earth E, and resistance R 31 is parallelly connected with capacitor C 16; Resistance R 32 is parallelly connected with capacitor C 17; 2 pin of rectifier bridge BRIDGE1 connect the anodal of capacitor C 16 and as internal power feeder ear V1, the negative pole of capacitor C 16 connects the positive pole of capacitor C 17, the negative pole of capacitor C 17 connect respectively rectifier bridge BRIDGE1 4 pin, capacitor C 20 an end and exchange thermally HG; Another termination output ground G of capacitor C 20; 3,4 ends of transformer TRF3 secondary coil connect the AC end of rectifier bridge BRIDGE2 respectively, the end of the positive terminating resistor R30 of rectifier bridge BRIDGE2 and as in-line power end V2, and the other end of resistance R 30 connects 1 pin of voltage stabilizing chip U6 and the positive pole of capacitor C 18 respectively; 3 pin of voltage stabilizing chip U6 connect the anodal of capacitor C 19 and as inner voltage stabilizing feeder ear Vcc, and 2 pin of voltage stabilizing chip U6 link to each other with the negative pole of negative terminal, capacitor C 18 and the capacitor C 19 of rectifier bridge BRIDGE2 respectively and GND1 with connecing control;
11 pin of control chip U1 in the primary coil 1 termination control circuit of isolation drive transformer TRF2 in said driving and the output circuit; 14 pin of control chip U1 in the primary coil 2 termination control circuits of isolation drive transformer TRF2; Resistance R 33 is parallelly connected with diode D6; Resistance R 34 is parallelly connected with diode D7; The negative pole of the secondary coil 3 terminating diode D6 of isolation drive transformer TRF2; The end of the positive pole difference connecting resistance R35 of diode D6 and the grid of fet T1, secondary coil 4 ends of isolation drive transformer TRF2 connect the source electrode of fet T1, the other end of resistance R 35, the drain electrode of fet T2,2 ends of main transformer TRF1 primary coil and an end of capacitor C 25 respectively, and the drain electrode of fet T1 meets internal power feeder ear V1; The negative pole of the secondary coil 5 terminating diode D7 of isolation drive transformer TRF2; The positive pole of diode D7 is the end of connecting resistance R36 and the grid of fet T2 respectively, secondary coil 6 ends of isolation drive transformer TRF2 connect respectively fet T2 source electrode, resistance R 36 the other end and exchange thermally HG, capacitor C 21 is parallelly connected with capacitor C 22; Capacitor C 23 is parallelly connected with capacitor C 24; One termination internal power feeder ear V1 of capacitor C 21, the other end of capacitor C 21 connect an end of capacitor C 23, an end of resistance R 37 and 1 end of main transformer TRF1 primary coil, the other end of the other end connecting resistance R37 of capacitor C 25 respectively; Another termination of capacitor C 23 exchanges thermally HG; 3 termination high-voltage output end HV.out of main transformer TRF1 secondary coil, the linking to each other a little of capacitor C 14 and resistance R 26 in the 4 termination current feedback circuits of main transformer TRF1 secondary coil, high pressure output ground G connects the positive pole of diode D4 in the current feedback circuit.
The invention has the beneficial effects as follows: operating frequency is high, and the complete machine power consumption is low; Have the input overvoltage, power transfer is overheated and defencive function such as output overcurrent; Be furnished with the power output manual fine-tuning and the indication of reporting to the police; Long-term working stability is good, and weight is lighter, good looking appearance.
Description of drawings
Fig. 1 is a casing sketch map of the present invention.
Fig. 2 is the rearview 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
Shown in Fig. 1～4; Ozone high-voltage power supply; Comprise the power circuit in power supply complete machine casing 1 and the casing; Power circuit comprises control circuit, current feedback circuit, thermal-shutdown circuit, protection circuit against input over-voltage, power supply circuits, driving and output circuit; Control circuit is connected with current feedback circuit, thermal-shutdown circuit, protection circuit against input over-voltage, power supply circuits, driving and output circuit respectively, and power supply circuits are connected with driving and output circuit, and driving and output circuit are connected with current feedback circuit;
13 pin of control chip U1 link to each other with 15 pin and meet inner voltage stabilizing feeder ear Vcc in the control circuit, and 3 pin of control chip U1,10 pin and 12 pin link to each other and meet control ground GND1, and 1 pin of control chip U1 links to each other with 9 pin and through capacitor C 4 GND1 with connecing control; Resistance R 6 is parallelly connected with capacitor C 5; The 2 pin difference connecting resistance R5 of control chip U1 and an end of resistance R 6,16 pin of control chip U1 connect the anodal of capacitor C 3 and as internal reference voltage end Vref, the negative pole of capacitor C 3 links to each other with the other end of resistance R 6 and meets control ground GND1; The positive pole of capacitor C 1 meets inner voltage stabilizing feeder ear Vcc; The negative pole of capacitor C 1 meets control ground GND1, and 5 pin of control chip U1 connect an end of capacitor C 2 and connect 7 pin of control chip U1 through resistance R 2, and 6 pin of control chip U1 connect 2 ends of adjustable resistance W1 through resistance R 1; 2 ends of adjustable resistance W1 link to each other with 3 ends; 1 end of adjustable resistance W1 links to each other with the other end of capacitor C 2 and meets control ground GND1,1 pin of the control chip U2A also other end of connecting resistance R5 that links to each other with 2 pin, the end of the 7 pin connecting resistance R3 of control chip U2B; Resistance R 7 is parallelly connected with capacitor C 6; The 6 pin difference connecting resistance R7 of control chip U2B and an end of resistance R 4, the other end of resistance R 3, the positive pole of diode D3,3 pin of another termination control chip U2A of resistance R 4,5 pin of control chip U2B meet internal reference voltage end Vref; 4 pin of control chip U2A meet control ground GND1, and 8 pin of control chip U2A meet inner voltage stabilizing feeder ear Vcc;
An end of resistance R 26 connects the negative pole of diode D4 and the positive pole of diode D5 respectively through capacitor C 14 in the current feedback circuit; The positive pole of another terminating diode D4 of resistance R 26, the end of the negative pole difference connecting resistance R27 of diode D5 and the positive pole of capacitor C 13, the negative pole of capacitor C 13 meets high pressure output ground G; The other end difference connecting resistance R28 of resistance R 27 and an end of resistance R 29; 2 ends of another termination adjustable resistance W4 of resistance R 28,2 ends of adjustable resistance W4 link to each other with 3 ends, the 1 termination output ground G of adjustable resistance W4; The other end of resistance R 29 connects 1 pin of photoelectrical coupler U5 and an end of capacitor C 15 respectively; 2 pin of photoelectrical coupler U5 link to each other with the other end of capacitor C 15 and meet output ground G, and 3 pin of photoelectrical coupler U5 connect control ground GND1,8 pin of control chip U1 in the 4 pin connection control circuits of photoelectrical coupler U5;
Resistance R 25 is parallelly connected with capacitor C 9 in the thermal-shutdown circuit, and 5 pin of control chip U4B are through resistance 15 connecting resistance R14 and an end of resistance R 25, the base stage of triode T5 respectively, and another termination of resistance R 14 meets inner voltage stabilizing feeder ear Vcc; The other end of resistance R 25 links to each other with the collector electrode of triode T5 and meets control ground GND1, and resistance R 17 is parallelly connected with capacitor C 11, the 6 pin difference connecting resistance R16 of control chip U4B and an end of resistance R 17; Another termination control ground GND1 of resistance R 16; The end of the 7 pin difference connecting resistance R20 of control chip U4B, the other end of resistance R 17,2 pin of another termination control chip U4A of resistance R 20, resistance R 19 is parallelly connected with capacitor C 12; The 3 pin difference connecting resistance R21 of control chip U4A and an end of resistance R 18, the positive pole of capacitor C 12; The negative pole of capacitor C 12 meets control ground GND1,2 ends of another termination adjustable resistance W3 of resistance R 18, and 2 ends of adjustable resistance W3 link to each other with 3 ends; The inner voltage stabilizing feeder ear of 1 termination of adjustable resistance W3 Vcc; The end of the 1 pin difference connecting resistance R22 of control chip U4A and the other end of resistance R 21, the end of the other end difference connecting resistance R23 of resistance R 22, the base stage of triode T4, the other end of resistance R 23 links to each other with the emitter of triode T4 and meets control ground GND1; The negative pole of diode D1 in the negative pole of the collector electrode difference sending and receiving optical diode D3 of triode T4, the control circuit; The positive pole of light-emitting diode D3 meets in-line power end V2 through resistance R 24, and 4 pin of control chip U4A meet control ground GND1, and 8 pin of control chip U4A meet inner voltage stabilizing feeder ear Vcc; The positive pole of capacitor C 10 meets inner voltage stabilizing feeder ear Vcc, and the negative pole of capacitor C 10 meets control ground GND1;
2 pin of control chip U3A meet internal reference voltage end Vref through resistance R 8 in the protection circuit against input over-voltage; The 3 pin difference connecting resistance R9 of control chip U3A and an end of resistance R 10; The other end of resistance R 9 connects the positive pole of capacitor C 7, an end of resistance R 11,1 end of adjustable resistance W2 respectively; 3 ends of adjustable resistance W2 link to each other with 2 ends and with meet control ground GND1 after the negative pole of capacitor C 7 links to each other; The positive pole of another termination voltage stabilizing didoe D2 of resistance R 11, the negative pole of voltage stabilizing didoe D2 meets in-line power end V2, the end of the 1 pin difference connecting resistance R12 of control chip U3A, the other end of resistance R 10; The end of the other end difference connecting resistance R13 of resistance R 12 and the base stage of triode T3; The other end of resistance R 13 links to each other with the emitter of triode T3 and meets control ground GND1, and the collector electrode of triode T3 connects 8 pin of control chip U1 in the positive pole, control circuit of capacitor C 8 respectively, and the negative pole of capacitor C 8 meets control ground GND1; 4 pin of control chip U3A meet control ground GND1, and 8 pin of control chip U3A meet inner voltage stabilizing feeder ear Vcc;
The L of Alternating Current Power Supply end connects 1 pin of input filter inductance L1 in the power supply circuits through protective tube BX; 2 pin of the N termination input filter inductance L1 of Alternating Current Power Supply; 3 pin of input filter inductance L1 connect 1 pin of rectifier bridge BRIDGE1,1 end of transformer TRF3 primary coil respectively; 5 pin of input filter inductance L1 connect 3 pin of rectifier bridge BRIDGE1,2 ends of transformer TRF3 primary coil respectively, and 4 pin of input filter inductance L1 meet the earth E, and resistance R 31 is parallelly connected with capacitor C 16; Resistance R 32 is parallelly connected with capacitor C 17; 2 pin of rectifier bridge BRIDGE1 connect the anodal of capacitor C 16 and as internal power feeder ear V1, the negative pole of capacitor C 16 connects the positive pole of capacitor C 17, the negative pole of capacitor C 17 connect respectively rectifier bridge BRIDGE1 4 pin, capacitor C 20 an end and exchange thermally HG; Another termination output ground G of capacitor C 20; 3,4 ends of transformer TRF3 secondary coil connect the AC end of rectifier bridge BRIDGE2 respectively, the end of "+" terminating resistor R30 of rectifier bridge BRIDGE2 and as in-line power end V2, and the other end of resistance R 30 connects 1 pin of voltage stabilizing chip U6 and the positive pole of capacitor C 18 respectively; 3 pin of voltage stabilizing chip U6 connect the anodal of capacitor C 19 and as inner voltage stabilizing feeder ear Vcc, and 2 pin of voltage stabilizing chip U6 link to each other with the negative pole of "-" end, capacitor C 18 and the capacitor C 19 of rectifier bridge BRIDGE2 respectively and GND1 with connecing control;
11 pin of control chip U1 in the primary coil 1 termination control circuit of isolation drive transformer TRF2 in driving and the output circuit; 14 pin of control chip U1 in the primary coil 2 termination control circuits of isolation drive transformer TRF2; Resistance R 33 is parallelly connected with diode D6; Resistance R 34 is parallelly connected with diode D7; The negative pole of the secondary coil 3 terminating diode D6 of isolation drive transformer TRF2; The end of the positive pole difference connecting resistance R35 of diode D6 and the grid of fet T1, secondary coil 4 ends of isolation drive transformer TRF2 connect the source electrode of fet T1, the other end of resistance R 35, the drain electrode of fet T2,2 ends of main transformer TRF1 primary coil and an end of capacitor C 25 respectively, and the drain electrode of fet T1 meets internal power feeder ear V1; The negative pole of the secondary coil 5 terminating diode D7 of isolation drive transformer TRF2; The positive pole of diode D7 is the end of connecting resistance R36 and the grid of fet T2 respectively, secondary coil 6 ends of isolation drive transformer TRF2 connect respectively fet T2 source electrode, resistance R 36 the other end and exchange thermally HG, capacitor C 21 is parallelly connected with capacitor C 22; Capacitor C 23 is parallelly connected with capacitor C 24; One termination internal power feeder ear V1 of capacitor C 21, the other end of capacitor C 21 connect an end of capacitor C 23, an end of resistance R 37 and 1 end of main transformer TRF1 primary coil, the other end of the other end connecting resistance R37 of capacitor C 25 respectively; Another termination of capacitor C 23 exchanges thermally HG; 3 termination high-voltage output end HV.out of main transformer TRF1 secondary coil, the linking to each other a little of capacitor C 14 and resistance R 26 in the 4 termination current feedback circuits of main transformer TRF1 secondary coil, high pressure output ground G connects the positive pole of diode D4 in the current feedback circuit.
The integrated control chip U1 of PWM is adopted in the core of power circuit, and operating frequency is high, and operating voltage range is wide, and totem pillar export structure adopts isolating transformer to drive the half-bridge output circuit, through the adjusting of output current feedback, to stablize power output.Simultaneously, this circuit has the kinds of protect function, and is easy to use.
Select control chip and other components and parts of low noise, low temperature drift, good stability for use; Reasonably the PCB layout designs is guaranteed control circuit and Alternating Current Power Supply and output isolation fully; At aspects such as transformer line pack arrangement technology, assembly technology and High-Voltage Insulation processing strict demand is arranged, guarantee the reliability and the stability of power supply long-term work.
Power supply complete machine casing 1 is the 3U standard PC case; The output high pressure is drawn two lead-in wires with the high pressure cable from a side of power supply complete machine casing 1 rear board; Be respectively high-voltage output end H.V.Out, high pressure output ground G, Alternating Current Power Supply input AC IN, the front panel of power supply complete machine casing is provided with input voltage display list 2, input current display list 3, alarm lamp 4 and power work switch 5.
Operation principle: power frequency civil power 220V is behind insurance BX and filter inductance L1; Lead up to after full-wave bridge rectifier circuit BRIDGE1 and the filtering; Power power supply as output circuit; Another road obtains in-line power V2 and inner voltage stabilizing power supply Vcc through transformer TRF3, rectification circuit BRIDGE2 and voltage stabilizing chip U6.
The integrated control chip U1 of PWM is adopted in the core of control circuit; PWM oscillation pulse signal from its 11 pin and the output of 14 pin both-ends; Directly connect isolation drive transformer TRF2; This transformer can make secondary level shift, can make control circuit and main converter circuit isolate the half-bridge output circuit that couple drive is made up of MOS pliotron T1 and T2, main transformer TRF1, capacitor C 21 and capacitor C 22 etc. again.
In thermal-shutdown circuit, when the power conversion device working temperature is too high, the temperature voltage signal that temperature sensor T5 gathers; Through control chip U4A and U4B etc.; Make triode T4 conducting, 2 pin current potentials with control chip U1 in the control circuit drag down on the one hand, and it is quit work; Electric charge on the soft start timing capacitor of will starting shooting the on the other hand C6 bleeds off, and wait is restarted.
In protection circuit against input over-voltage, when the alternating supply voltage of input when too high, the input overvoltage signal V2 that gathers at the positive output end of rectification circuit BRIDGE2; Through control chip U3A etc.; Make triode T3 conducting, the 8 pin current potentials of control chip U1 in the control circuit are dragged down, it is quit work.
In driving and output circuit, the high-frequency impulse ripple that control circuit produces through half-bridge circuit, through main transformer TRF1 output high pressure, and through control, adjusting output current, is stablized power output.The leakage inductance generation resonance of load capacitance and high-tension transformer TRF1, the generation peak-to-peak value is several kilovolts a quasi-sine-wave high pressure, is used to drive the device of producing ozone with corona discharge.
Claims (2)
1. ozone high-voltage power supply; Comprise the power circuit in power supply complete machine casing (1) and the casing; It is characterized in that: said power circuit comprises control circuit, current feedback circuit, thermal-shutdown circuit, protection circuit against input over-voltage, power supply circuits, driving and output circuit; Said control circuit is connected with current feedback circuit, thermal-shutdown circuit, protection circuit against input over-voltage, power supply circuits, driving and output circuit respectively; Said power supply circuits are connected with driving and output circuit, and said driving and output circuit are connected with current feedback circuit;
In the said control circuit control supply power voltage end 13 pin of control chip U1 with drive supply power voltage end 15 pin and link to each other and meet inner voltage stabilizing feeder ear Vcc; Synchronous end 3 pin of control chip U1, the pass broken ends of fractured bone 10 pin link to each other with earth terminal 12 pin and meet control ground GND1; Error amplifier inverting input 1 pin of control chip U1 links to each other with frequency compensation end 9 pin and meets control ground GND1 through capacitor C 4; Resistance R 6 is parallelly connected with capacitor C 5; The error amplifier in-phase input end 2 pin difference connecting resistance R5 of control chip U1 and an end of resistance R 6, reference voltage terminal 16 pin of control chip U1 connect the anodal of capacitor C 3 and as internal reference voltage end Vref, the negative pole of capacitor C 3 links to each other with the other end of resistance R 6 and meets control ground GND1; The positive pole of capacitor C 1 meets inner voltage stabilizing feeder ear Vcc; The negative pole of capacitor C 1 meets control ground GND1, and timing capacitor end 5 pin of control chip U1 connect an end of capacitor C 2 and connect discharge end 7 pin of control chip U1 through resistance R 2, and timing resistor end 6 pin of control chip U1 connect 2 ends of adjustable resistance W1 through resistance R 1; 2 ends of adjustable resistance W1 link to each other with 3 ends; 1 end of adjustable resistance W1 links to each other with the other end of capacitor C 2 and meets control ground GND1, output 1 pin of the control chip U2A also other end of connecting resistance R5 that links to each other with inverting input 2 pin, the end of the output 7 pin connecting resistance R3 of control chip U2B; Resistance R 7 is parallelly connected with capacitor C 6; The inverting input 6 pin difference connecting resistance R7 of control chip U2B and an end of resistance R 4, the other end of resistance R 3, the positive pole of diode D3, in-phase input end 3 pin of another termination control chip U2A of resistance R 4, in-phase input end 5 pin of control chip U2B meet internal reference voltage end Vref; Negative feeder ear 4 pin of control chip U2A meet control ground GND1, and positive feeder ear 8 pin of control chip U2A meet inner voltage stabilizing feeder ear Vcc;
An end of resistance R 26 connects the negative pole of diode D4 and the positive pole of diode D5 respectively through capacitor C 14 in the said current feedback circuit; The positive pole of another terminating diode D4 of resistance R 26; The end of the negative pole difference connecting resistance R27 of diode D5 and the positive pole of capacitor C 13; The negative pole of capacitor C 13 meets high pressure output ground G, the other end difference connecting resistance R28 of resistance R 27 and an end of resistance R 29,2 ends of another termination adjustable resistance W4 of resistance R 28; 2 ends of adjustable resistance W4 link to each other with 3 ends; The 1 termination output ground G of adjustable resistance W4, the other end of resistance R 29 connects emitting diode anode tap 1 pin of photoelectrical coupler U5 and an end of capacitor C 15 respectively, and emitting diode cathode terminal 2 pin of photoelectrical coupler U5 and the other end of capacitor C 15 link to each other and meet output ground G; Reception transistor emitter 3 pin of photoelectrical coupler U5 connect control ground GND1, soft start end 8 pin of control chip U1 in the reception transistor collector 4 pin connection control circuits of photoelectrical coupler U5;
Resistance R 25 is parallelly connected with capacitor C 9 in the said thermal-shutdown circuit; In-phase input end 5 pin of control chip U4B are through resistance 15 connecting resistance R14 and an end of resistance R 25, the base stage of triode T5 respectively, and another termination of resistance R 14 meets inner voltage stabilizing feeder ear Vcc, the other end of resistance R 25 link to each other with the collector electrode of triode T5 and connect control GND1; Resistance R 17 is parallelly connected with capacitor C 11; The inverting input 6 pin difference connecting resistance R16 of control chip U4B and an end of resistance R 17, another termination control ground GND1 of resistance R 16, the end of the output 7 pin difference connecting resistance R20 of control chip U4B, the other end of resistance R 17; Inverting input 2 pin of another termination control chip U4A of resistance R 20; Resistance R 19 is parallelly connected with capacitor C 12, and the in-phase input end 3 pin difference connecting resistance R21 of control chip U4A and an end of resistance R 18, the positive pole of capacitor C 12, the negative pole of capacitor C 12 meet control ground GND1; 2 ends of another termination adjustable resistance W3 of resistance R 18; 2 ends of adjustable resistance W3 link to each other with 3 ends, the inner voltage stabilizing feeder ear of 1 termination of adjustable resistance W3 Vcc, the end of the output 1 pin difference connecting resistance R22 of control chip U4A and the other end of resistance R 21; The end of the other end difference connecting resistance R23 of resistance R 22, the base stage of triode T4; The other end of resistance R 23 links to each other with the emitter of triode T4 and meets control ground GND1, the negative pole of diode D1 in the negative pole of the collector electrode difference sending and receiving optical diode D3 of triode T4, the control circuit, and the positive pole of light-emitting diode D3 meets in-line power end V2 through resistance R 24; Negative feeder ear 4 pin of control chip U4A meet control ground GND1; Positive feeder ear 8 pin of control chip U4A meet inner voltage stabilizing feeder ear Vcc, and the positive pole of capacitor C 10 meets inner voltage stabilizing feeder ear Vcc, and the negative pole of capacitor C 10 meets control ground GND1;
Inverting input 2 pin of control chip U3A meet internal reference voltage end Vref through resistance R 8 in the said protection circuit against input over-voltage; The in-phase input end 3 pin difference connecting resistance R9 of control chip U3A and an end of resistance R 10; The other end of resistance R 9 connects the positive pole of capacitor C 7, an end of resistance R 11,1 end of adjustable resistance W2 respectively; 3 ends of adjustable resistance W2 link to each other with 2 ends and with meet control ground GND1 after the negative pole of capacitor C 7 links to each other; The positive pole of another termination voltage stabilizing didoe D2 of resistance R 11, the negative pole of voltage stabilizing didoe D2 meets in-line power end V2, the end of the output 1 pin difference connecting resistance R12 of control chip U3A, the other end of resistance R 10; The end of the other end difference connecting resistance R13 of resistance R 12 and the base stage of triode T3; The other end of resistance R 13 links to each other with the emitter of triode T3 and meets control ground GND1, and the collector electrode of triode T3 connects soft start end 8 pin of control chip U1 in the positive pole, control circuit of capacitor C 8 respectively, and the negative pole of capacitor C 8 meets control ground GND1; Negative feeder ear 4 pin of control chip U3A meet control ground GND1, and positive feeder ear 8 pin of control chip U3A meet inner voltage stabilizing feeder ear Vcc;
The L of Alternating Current Power Supply end connects input 1 pin of input filter inductance L1 in the said power supply circuits through protective tube BX; Input 2 pin of the N termination input filter inductance L1 of Alternating Current Power Supply; Output 3 pin of input filter inductance L1 connect ac input end 1 pin of rectifier bridge BRIDGE1,1 end of transformer TRF3 primary coil respectively; Output 5 pin of input filter inductance L1 connect ac input end 3 pin of rectifier bridge BRIDGE1,2 ends of transformer TRF3 primary coil respectively; Earth terminal 4 pin of input filter inductance L1 meet the earth E; Resistance R 31 is parallelly connected with capacitor C 16, and resistance R 32 is parallelly connected with capacitor C 17, and direct current output plus terminal 2 pin of rectifier bridge BRIDGE1 connect the anodal of capacitor C 16 and as internal power feeder ear V1; The negative pole of capacitor C 16 connects the positive pole of capacitor C 17; The negative pole of capacitor C 17 connects the direct current of rectifier bridge BRIDGE1 respectively and exports an end of negative terminal 4 pin, capacitor C 20 and exchange thermally HG, another termination output ground G of capacitor C 20, and 3,4 ends of transformer TRF3 secondary coil connect the ac input end AC end of rectifier bridge BRIDGE2 respectively; The end of the direct current output plus terminal connecting resistance R30 of rectifier bridge BRIDGE2 and as in-line power end V2; The other end of resistance R 30 connects input 1 pin of voltage stabilizing chip U6 and the positive pole of capacitor C 18 respectively, and output 3 pin of voltage stabilizing chip U6 connect the anodal of capacitor C 19 and as inner voltage stabilizing feeder ear Vcc, and common port 2 pin of voltage stabilizing chip U6 link to each other with the negative pole of direct current output negative terminal, capacitor C 18 and the capacitor C 19 of rectifier bridge BRIDGE2 respectively and GND1 with connecing control;
In said driving and the output circuit in the primary coil of the isolation drive transformer TRF2 end 1 termination control circuit of the same name the output A of control chip U1 hold 11 pin; The output B of control chip U1 holds 14 pin in the primary coil different name end 2 termination control circuits of isolation drive transformer TRF2; Resistance R 33 is parallelly connected with diode D6; Resistance R 34 is parallelly connected with diode D7; The negative pole of the secondary coil of isolation drive transformer TRF2 end 3 terminating diode D6 of the same name; The end of the positive pole difference connecting resistance R35 of diode D6 and the grid of fet T1, secondary coil different name end 4 ends of isolation drive transformer TRF2 connect the source electrode of fet T1, the other end of resistance R 35, the drain electrode of fet T2,2 ends of main transformer TRF1 primary coil and an end of capacitor C 25 respectively, and the drain electrode of fet T1 meets internal power feeder ear V1; The negative pole of the secondary coil different name end 5 terminating diode D7 of isolation drive transformer TRF2; The positive pole of diode D7 is the end of connecting resistance R36 and the grid of fet T2 respectively, the secondary coil of isolation drive transformer TRF2 end 6 ends of the same name connect respectively fet T2 source electrode, resistance R 36 the other end and exchange thermally HG, capacitor C 21 is parallelly connected with capacitor C 22; Capacitor C 23 is parallelly connected with capacitor C 24; One termination internal power feeder ear V1 of capacitor C 21, the other end of capacitor C 21 connect an end of capacitor C 23, an end of resistance R 37 and 1 end of main transformer TRF1 primary coil, the other end of the other end connecting resistance R37 of capacitor C 25 respectively; Another termination of capacitor C 23 exchanges thermally HG; 3 termination high-voltage output end HV.out of main transformer TRF1 secondary coil, the linking to each other a little of capacitor C 14 and resistance R 26 in the 4 termination current feedback circuits of main transformer TRF1 secondary coil, high pressure output ground G connects the positive pole of diode D4 in the current feedback circuit.
2. ozone high-voltage power supply according to claim 1; It is characterized in that: said power supply complete machine casing (1) rear board is respectively equipped with high-voltage output end HV.Out, high pressure output ground G, Alternating Current Power Supply input AC IN, and the front panel of power supply complete machine casing is provided with input voltage display list (2), input current display list (3), alarm lamp (4) and power work switch (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102238529A CN101867307B (en) | 2010-07-12 | 2010-07-12 | Ozone high-voltage power supply |
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| CN2010102238529A CN101867307B (en) | 2010-07-12 | 2010-07-12 | Ozone high-voltage power supply |
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| CN101867307A CN101867307A (en) | 2010-10-20 |
| CN101867307B true CN101867307B (en) | 2012-07-04 |
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| CN102052206B (en) * | 2010-11-26 | 2012-10-03 | 胡斌 | Energy saver of automobile engine |
| CN102130598B (en) * | 2011-03-21 | 2013-03-13 | 东文高压电源（天津）有限公司 | Pulse width modulation push-pull type positive output electrostatic spinning high-voltage complete machine power supply |
| CN102223093B (en) * | 2011-06-16 | 2013-04-17 | 东文高压电源（天津）有限公司 | Power circuit with start-stop control, low power supply and small power and negative high voltage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6204613B1 (en) * | 2000-02-18 | 2001-03-20 | Bryce L. Hesterman | Protected dimming control interface for an electronic ballast |
| CN1845439A (en) * | 2006-04-12 | 2006-10-11 | 章祖文 | Adjustable frequency-stabilizing voltage-stabilizing variable-frequency variable-voltage power supply |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6204613B1 (en) * | 2000-02-18 | 2001-03-20 | Bryce L. Hesterman | Protected dimming control interface for an electronic ballast |
| CN1845439A (en) * | 2006-04-12 | 2006-10-11 | 章祖文 | Adjustable frequency-stabilizing voltage-stabilizing variable-frequency variable-voltage power supply |
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Owner name: TIANJIN DONGWEN HIGH VOLTAGE POWER SUPPLY CO., LTD Free format text: FORMER OWNER: TIANJIN DONGWEN HIGH VOLTAGE POWER SUPPLY FACTORY Effective date: 20120625 |
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Effective date of registration: 20120625 Address after: 300171, blue mansion, No. eleven, No. 47, Hedong Road, Hedong District, Tianjin, 8F Patentee after: Tianjin Dongwen High Voltage Power Supply Plant Address before: 300171, blue mansion, No. eleven, No. 47, Hedong Road, Hedong District, Tianjin, 8F Patentee before: Tianjin Dongwen High Voltage Power Supply Factory |
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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 |