CN106061085B - A kind of high accuracy has the function of the isolation krypton lamp high-voltage power circuit of current regulation - Google Patents
A kind of high accuracy has the function of the isolation krypton lamp high-voltage power circuit of current regulation Download PDFInfo
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- CN106061085B CN106061085B CN201610667241.0A CN201610667241A CN106061085B CN 106061085 B CN106061085 B CN 106061085B CN 201610667241 A CN201610667241 A CN 201610667241A CN 106061085 B CN106061085 B CN 106061085B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The present invention relates to a kind of high accuracy to have the function of the isolation krypton lamp high-voltage power circuit of current regulation, including auxiliary power supply circuit, control and drive circuit, further includes lamp current isolation linear transform circuit, isolation High voltage output and feedback of voltage and current circuit.Isolation High voltage output and feedback of voltage and current circuit isolate linear transform circuit's connection with auxiliary power supply circuit, control and drive circuit, lamp current respectively, and auxiliary power supply circuit isolates linear transform circuit's connection with control and drive circuit, lamp current respectively.Beneficial effect is：Build-up of luminance and maintenance voltage integrated design, when lamp load is lighted, two voltages automatically switch；Isolate linear setting regulatory function with lamp current, isolation tuning linearity is good；High performance lamp current feedback control, precision of steady current is high, and long-term working stability is good；Isolate floated High voltage output, reduce various noise disturbances of output terminal etc. and influence input terminal, facilitate control and use of the user to power supply.
Description
Technical field
The present invention relates to one kind to be widely used in the laser light pump light such as laser marking machine, laser engraving machine, laser-beam drilling machine
The high accuracy in source has the function of the isolation krypton lamp high-voltage power circuit of current regulation.
Background technology
Krypton lamp is the optical pumping power supply of the most important YGA connections solid state laser in current China, and the size of lamp current determines
The brightness of krypton lamp light source, so as to determine the laser intensity of laser, most of krypton lamp high-voltage power supply specials are general currently on the market
Store-through causes the laser intensity of laser unstable, in mark or engraving, goes out precision of steady current is low, stability is poor the shortcomings of
Line deviation, in addition, many krypton lamp power supplys take the mode of external control that krypton lamp lamp current is adjusted, the output of most high voltage power supplies
Difference is linearly spent with control signal, it is inaccurate the result such as to cause to carve, punch, and makes troubles to control.
The content of the invention
In view of the shortcomings of the prior art, a kind of precision of steady current of present invention offer is high, tune cleanliness degree is good, performance is stablized
Reliable high accuracy has the function of the isolation krypton lamp high-voltage power circuit of current regulation.
The present invention to achieve the above object, is adopted the technical scheme that, a kind of high accuracy has the function of current regulation
Isolate krypton lamp high-voltage power circuit, including auxiliary power supply circuit, control and drive circuit, it is characterised in that：Further include lamp current
Isolate linear transform circuit, isolation High voltage output and feedback of voltage and current circuit, the isolation High voltage output and voltage and current are anti-
Current feed circuit isolates linear transform circuit's connection with auxiliary power supply circuit, control and drive circuit, lamp current respectively, and the auxiliary supplies
Circuit isolates linear transform circuit's connection with control and drive circuit, lamp current respectively；
Physical circuit is connected as：In the lamp current isolation linear transform circuit, zeroing 1 foot of end of amplifier U6 connects
1 foot of fixing end of potentiometer RW1, another zeroing 8 foot of end of amplifier U6 connect another fixing end 2 of potentiometer RW1
Foot, 3 foot of adjustable side of potentiometer RW1 is connected with 7 foot of power supply anode of amplifier U6 to be followed by auxiliary power supply circuit in input side
Portion powers anode+Vcc1, power supply 4 foot of negative terminal of amplifier U6 connect the in-line power negative terminal of input side in auxiliary power supply circuit-
3 foot of in-phase input end of Vcc1, amplifier U6 connect input ground GND, amplifier U6 2 foot of inverting input difference connecting resistance R8 and
3 foot of cathode of photoelectric tube 1 in one end of capacitance C6, precision photoelectric coupler U8, another termination lamp current setting of resistance R8 are adjusted
Save end Iadj, one end of 6 foot of the output terminal difference connecting resistance R9 of amplifier U6, the other end of capacitance C6, the other end of resistance R9
Connect 1 foot of cathode of luminous tube in precision photoelectric coupler U8,2 foot of anode of luminous tube connects auxiliary and supplies in precision photoelectric coupler U8
4 foot of anode of photoelectric tube 1 connects input ground in input side in-line power anode+Vcc1 in circuit, precision photoelectric coupler U8
5 foot of anode of photoelectric tube 2 connects photoelectric tube 2 in isolation output ground G, precision photoelectric coupler U8 in GND, precision photoelectric coupler U8
6 foot of cathode difference one end of connecting resistance R25 and capacitance C7,2 foot of inverting input of amplifier U7, one of potentiometer RW3
2 foot of fixing end is connected with 3 foot of adjustable side, another 1 foot of fixing end of another termination potentiometer RW3 of resistance R25, amplifier U7
3 foot of in-phase input end meet isolation output ground G, 6 foot of output terminal of amplifier U7 connects the other end of capacitance C7, potentiometer respectively
2 foot of fixing end of RW3, zeroing 1 foot of end of amplifier U7 meet 1 foot of fixing end of potentiometer RW2, amplifier U7
Another zeroing 8 foot of end meet another 2 foot of fixing end of potentiometer RW2,3 foot of adjustable side and the amplifier U7 of potentiometer RW2
7 foot of power supply anode be connected and be followed by outlet side in-line power anode+Vcc2 in auxiliary power supply circuit, the power supply negative terminal of amplifier U7
4 feet meet outlet side in-line power negative terminal-Vcc2 in auxiliary power supply circuit；
In the isolation High voltage output and feedback of voltage and current circuit, 1 foot of Same Name of Ends of transformer TRF secondary windings Ls leads to
Cross capacitance C9 and connect one end of capacitance C11, the anode of diode D3, the cathode of diode D4, the other end difference of capacitance C11 respectively
Connect anode, the cathode of diode D6 of diode D5, capacitance C22, diode D7, resistance R17 are in parallel, TRF level of transformer around
2 foot of different name end of group Ls connect respectively the cathode of diode D3, one end of resistance R26 and capacitance C10 and C23, diode D7 it is negative
Pole, the cathode of diode D7 meet isolation output ground G and draw, the other end difference connecting resistance R34's and capacitance C12 of capacitance C10
One end, the anode of diode D4, the cathode of diode D5, the other end of capacitance C12 connect the anode of diode D6, resistance respectively
One end of R16, the other end of resistance R16 connect one end of capacitance C25 and resistance R33 respectively, and another termination isolation of capacitance C25 is defeated
Go out ground G, resistance R22 is in parallel with capacitance C14 after connecting with resistance R24, the other end difference connecting resistance R36 and capacitance of resistance R33
One end of C14 is simultaneously drawn as high-voltage output end Vo+, and diode D9 and D10 forward connect, and the cathode of diode D9 connects electricity respectively
Hinder the other end of R34 and capacitance C23, the anode of diode D10 by the other end of resistance R35 connecting resistances R36, resistance R21 with
Capacitance C16 is in parallel, 2 foot of the inverting input difference connecting resistance R18 of amplifier U5A and one end of resistance R23 and capacitance C15, electricity
Hinder the other end of another termination capacitor C14 of R23, it is one end of 3 foot of the in-phase input end difference connecting resistance R21 of amplifier U5A, auxiliary
Help outlet side reference voltage terminal Vr1 in power supply circuit, one end of 1 foot of output terminal difference the connecting resistance R19 and R20 of amplifier U5A,
The other end of capacitance C15, power supply 4 foot of negative terminal of amplifier U5A is connected with the other end of resistance R18 and R20 and R21 respectively to be followed by
Isolation output ground G, 8 foot of power supply anode of amplifier U5A meet outlet side in-line power anode+Vcc2 in auxiliary power supply circuit, put
6 foot of the inverting input difference connecting resistance R30 of big device U5B and one end, the other end of resistance R26 of capacitance C19 and C20, resistance
Another the termination outlet side reference voltage terminal Vr1, resistance R29 and capacitance C26 of R30 is in parallel, the in-phase input end 5 of amplifier U5B
Foot distinguishes one end of connecting resistance R29 and resistance R31, amplifies in another termination lamp current isolation linear transform circuit of resistance R31
6 foot of output terminal of device U7,7 foot of output terminal of amplifier U5B connect the cathode of diode D11, the other end of capacitance C19 respectively, and two
The anode of pole pipe D11 connects the cathode of capacitance C18, one end of resistance R27 respectively, the other end difference connecting resistance R28's of resistance R27
One end, the base stage of triode T2, the emitter of triode the T2 anode with capacitance C18, the other end of resistance R28 and R29 respectively
It is connected and is followed by connecing the one of capacitance C17 respectively after the collector for isolating output ground G, triode T2 is connected with the other end of resistance R19
End, 1 foot of input diode cathode of photoelectrical coupler U4,2 foot of input diode anode of photoelectrical coupler U4 is with capacitance C17's
The other end connects the cathode of diode D8 by resistance R32 after being connected, the anode of diode D8 connects isolation output ground G, photoelectric coupling
4 foot of collector of device U4 output triodes meets in-line power end Vcc in control and drive circuit, and photoelectrical coupler U4 exports three poles
One end of 3 foot of emitter difference the connecting resistance R11 and R12 of pipe, another termination input ground GND of resistance R12, resistance R11's is another
5 feet of control chip U2 in one termination control and drive circuit.
The beneficial effects of the invention are as follows：Build-up of luminance and maintenance voltage integrated design, when lamp load is lighted, two voltages are cut automatically
Change；Isolate linear setting regulatory function with lamp current, isolation tuning linearity is good；High performance lamp current feedback control, surely
It is high to flow precision, long-term working stability is good；Isolate floated High voltage output, reduce various noise disturbances of output terminal etc. and influence
Input terminal, facilitates control and use of the user to power supply.
Brief description of the drawings
Fig. 1 is the connection block diagram of power circuit of the present invention；
Fig. 2 is the schematic diagram of power circuit of the present invention.
Embodiment
As shown in Figure 1, 2, a kind of high accuracy has the function of the isolation krypton lamp high-voltage power circuit of current regulation, including auxiliary
Power supply circuit, control and drive circuit, it is anti-to further include lamp current isolation linear transform circuit, isolation High voltage output and voltage and current
Current feed circuit.
It is electric with auxiliary power supply circuit, control and drive circuit, lamp respectively to isolate High voltage output and feedback of voltage and current circuit
Stream isolation linear transform circuit's connection, auxiliary power supply circuit isolate linear transformation electricity with control and drive circuit, lamp current respectively
Road connects.
In above-mentioned lamp current isolation linear transform circuit, zeroing 1 foot of end of amplifier U6 connects one of potentiometer RW1
1 foot of fixing end, another zeroing 8 foot of end of amplifier U6 connect another 2 foot of fixing end of potentiometer RW1, the tune of potentiometer RW1
Section 3 foot of end is connected with 7 foot of power supply anode of amplifier U6 is followed by input side in-line power anode+Vcc1 in auxiliary power supply circuit,
Power supply 4 foot of negative terminal of amplifier U6 connects the same phase of the in-line power negative terminal-Vcc1, amplifier U6 of input side in auxiliary power supply circuit
3 foot of input terminal connects one end, the linear light of 2 foot of the inverting input difference connecting resistance R8 and capacitance C6 of input ground GND, amplifier U6
3 foot of cathode of photoelectric tube 1 in electric coupler U8, another termination lamp current setting adjustable side Iadj of resistance R8, amplifier U6's
One end of 6 foot of output terminal difference connecting resistance R9, the other end of capacitance C6, in another terminated line photoelectrical coupler U8 of resistance R9
1 foot of cathode of luminous tube, 2 foot of anode of luminous tube connects in auxiliary power supply circuit and is supplied inside input side in precision photoelectric coupler U8
4 foot of anode of photoelectric tube 1 is connect in input ground GND, precision photoelectric coupler U8 in electric anode+Vcc1, precision photoelectric coupler U8
5 foot of anode of photoelectric tube 2 meets 6 foot of the cathode difference connecting resistance R25 of photoelectric tube 2 in isolation output ground G, precision photoelectric coupler U8
2 foot of inverting input of one end, amplifier U7 with capacitance C7,2 foot of fixing end and the 3 foot phase of adjustable side of potentiometer RW3
Even, another 1 foot of fixing end of another termination potentiometer RW3 of resistance R25,3 foot of in-phase input end of amplifier U7 connects isolation
Output ground G, 6 foot of output terminal of amplifier U7 connect 2 foot of fixing end of the other end of capacitance C7, potentiometer RW3, amplify respectively
Zeroing 1 foot of end of device U7 connects 1 foot of fixing end of potentiometer RW2, and another zeroing 8 foot of end of amplifier U7 connects current potential
Another 2 foot of fixing end of device RW2,3 foot of adjustable side of potentiometer RW2 be connected with 7 foot of power supply anode of amplifier U7 be followed by it is auxiliary
Outlet side in-line power anode+Vcc2 in power supply circuit is helped, 4 foot of power supply negative terminal of amplifier U7, which is connect in auxiliary power supply circuit, to be exported
Side in-line power negative terminal-Vcc2.
In above-mentioned isolation High voltage output and feedback of voltage and current circuit, 1 foot of Same Name of Ends of transformer TRF secondary windings Ls leads to
Cross capacitance C9 and connect one end of capacitance C11, the anode of diode D3, the cathode of diode D4, the other end difference of capacitance C11 respectively
Meet anode, the cathode of diode D6 of diode D5, capacitance C22 and diode D7 and resistance R17 is in parallel, TRF level of transformer
2 foot of different name end of winding Ls meets the cathode of diode D3, one end of resistance R26 and capacitance C10 and C23, diode D7 respectively
Anode, the cathode of diode D7 meet isolation output ground G and draw, the other end difference connecting resistance R34 and capacitance C12 of capacitance C10
One end, anode, the cathode of diode D5 of diode D4, the other end of capacitance C12 connects the anode of diode D6, resistance respectively
One end of R16, the other end of resistance R16 connect one end of capacitance C25 and resistance R33 respectively, and another termination isolation of capacitance C25 is defeated
Go out ground G, resistance R22 is in parallel with capacitance C14 after connecting with resistance R24, the other end difference connecting resistance R36 and capacitance of resistance R33
One end of C14, and drawn as high-voltage output end Vo+, diode D9 and D10 forward connect, and the cathode of diode D9 connects respectively
The other end of resistance R34 and capacitance C23, the anode of diode D10 pass through the other end of resistance R35 connecting resistances R36, resistance R21
It is in parallel with capacitance C16,2 foot of the inverting input difference connecting resistance R18 of amplifier U5A and one end of resistance R23 and capacitance C15,
The other end of another termination capacitor C14 of resistance R23, one end of 3 foot of the in-phase input end difference connecting resistance R21 of amplifier U5A,
The one of 1 foot of output terminal difference the connecting resistance R19 and R20 of outlet side reference voltage terminal Vr1 in auxiliary power supply circuit, amplifier U5A
End, the other end of capacitance C15, the other end of power supply 4 foot of negative terminal of amplifier U5A respectively with resistance R18 and R20 and R21 are connected
Be followed by isolation output ground G, 8 foot of power supply anode of amplifier U5A connect outlet side in-line power anode in auxiliary power supply circuit+
6 foot of the inverting input difference connecting resistance R30 of Vcc2, amplifier U5B and one end of capacitance C19 and C20, resistance R26 it is another
End, another the termination outlet side reference voltage terminal Vr1, resistance R29 and capacitance C26 of resistance R30 is in parallel, the same phase of amplifier U5B
5 foot of input terminal distinguishes one end of connecting resistance R29 and resistance R31, another termination lamp current isolation linear transform circuit of resistance R31
6 foot of output terminal of middle amplifier U7,7 foot of output terminal of amplifier U5B connect respectively the cathode of diode D11, capacitance C19 it is another
End, the anode of diode D11 connect the cathode of capacitance C18, one end of resistance R27, the other end difference connecting resistance of resistance R27 respectively
One end of R28, the base stage of triode T2, the emitter of triode T2 respectively the anode with capacitance C18, resistance R28 and R29 it is another
One end, which is connected, to be followed by meeting capacitance C17 respectively after the collector for isolating output ground G, triode T2 is connected with the other end of resistance R19
One end, 1 foot of input diode cathode of photoelectrical coupler U4,2 foot of input diode anode and capacitance of photoelectrical coupler U4
The other end of C17 connects the cathode of diode D8 by resistance R32 after being connected, the anode of diode D8 connects isolation output ground G, photoelectricity
4 foot of collector of coupler U4 output triodes connects in-line power end Vcc in control and drive circuit, photoelectrical coupler U4 outputs
One end of 3 foot of emitter difference the connecting resistance R11 and R12 of triode, another termination input ground GND, resistance R11 of resistance R12
Another termination control and drive circuit in control chip U2 5 feet.
The model of amplifier U5：HA17358B, amplifier U6, the model of amplifier U7：OP07A, photoelectrical coupler
The model of U4：The model HCNR201 of TLP621, precision photoelectric coupler U8.
To ensure the resistance to pressure request of isolation of power supply, strengthen insulation processing, coiling between primary and secondary coil when transformer makes
After the completion of transformer by way of dipping lacquer, to strengthen the insulation between winding；M1 and M2 isolates DC/DC modules electricity for small-power
Source, it all needs to meet to isolate pressure-resistant design requirement with linear optical coupling U8 and optocoupler U4 etc.；
To ensure the stability of lamp current, the related component in current sample and feedback control loop, need to select low noise
Sound, Low Drift Temperature, the component of high stability, the component of High voltage output part will consider certain pressure-resistant redundancy.
Operation principle
In auxiliary power supply circuit, M1 and M2 isolate DC/DC modular power sources for small-power, it is input, output isolation two
The control circuit of side provides auxiliary power supply voltage ± Vcc1, ± Vcc2 and reference voltage V r1.Chip U1, U3 are whole power supply electricity
Road provides reference voltage.
In control and drive circuit, control chip U2（7555）, the composition multi-harmonic-oscillations electricity such as resistance R5, R7 and capacitance C3
Road, the adjustable square-wave signal pulse of output duty cycle, drives MOS triode T1, and then driving transformer TRF.By controlling, adjusting
Save the 5 foot current potential of voltage controling end of U2 chips, the output pulse duty factor of 3 foot of regulation and control control chip U2 output terminals.
Isolate in lamp current in linear transform circuit, amplifier U6 and U7 and linear optical coupling U8 etc. form the shielding wire of voltage
Property conversion, set the input side lamp current of external control and adjust voltage Iadj, by isolated variable, regulation and control output lamp is removed in outlet side
The size of electric current.
In isolation High voltage output and feedback of voltage and current circuit, the high voltage pulse of TRF level output of transformer, through multiple
High pressure is exported after voltage multiplying rectifier and filtering.Two multiplication of voltages obtained by resistance R34 export, through diode D9, D10 and resistance R35,
R36, is connected with high-voltage output end.When krypton lamp, which loads, to be started, it is high-impedance state, and output current is almost nil, resistance R16,
Pressure drop very little on R33, output terminal high pressure are exported higher than two multiplication of voltages, and diode D9, D10 are reverse-biased, are krypton lamp in high-voltage output end
Load provides starting voltage；After krypton lamp loads breakdown work, it switchs to low resistive state, output current increase, resistance R16, R33
On pressure drop increase therewith, output end voltage decline, until output terminal high pressure less than two multiplication of voltages output, diode D9, D10 are led
Logical, two multiplication of voltage output loops work, and high-voltage output end provides maintenance voltage for krypton lamp load at this time.
Krypton lamp load current is sampled by resistance R17, the lamp current sampled signal of acquisition by high-precision amplifying,
And control drive circuit etc., the control to krypton lamp lamp current is completed, realizes stable lamp current output.
Claims (1)
1. a kind of high accuracy has the function of the isolation krypton lamp high-voltage power circuit of current regulation, including auxiliary power supply circuit, control
And drive circuit, it is characterised in that：Further include lamp current isolation linear transform circuit, isolation High voltage output and feedback of voltage and current
Circuit, the isolation High voltage output and feedback of voltage and current circuit are electric with auxiliary power supply circuit, control and drive circuit, lamp respectively
Stream isolation linear transform circuit's connection, the auxiliary power supply circuit isolate linear change with control and drive circuit, lamp current respectively
Change circuit connection；
Physical circuit is connected as：In the lamp current isolation linear transform circuit, zeroing 1 foot of end of amplifier U6 connects current potential
1 foot of fixing end of device RW1, another zeroing 8 foot of end of amplifier U6 connect another 2 foot of fixing end of potentiometer RW1, electricity
3 foot of adjustable side of position device RW1 is connected with 7 foot of power supply anode of amplifier U6 is followed by input side in-line power in auxiliary power supply circuit
Power supply 4 foot of negative terminal of anode+Vcc1, amplifier U6 meet the in-line power negative terminal-Vcc1 of input side in auxiliary power supply circuit, amplification
3 foot of in-phase input end of device U6 connects 2 foot of the inverting input difference connecting resistance R8's and capacitance C6 of input ground GND, amplifier U6
3 foot of cathode of photoelectric tube 1 in one end, precision photoelectric coupler U8, another termination lamp current setting adjustable side Iadj of resistance R8,
One end of 6 foot of the output terminal difference connecting resistance R9 of amplifier U6, the other end of capacitance C6, another terminated line photoelectricity of resistance R9
1 foot of cathode of luminous tube in coupler U8,2 foot of anode of luminous tube connects defeated in auxiliary power supply circuit in precision photoelectric coupler U8
Enter side in-line power anode+Vcc1,4 foot of anode of photoelectric tube 1 connects input ground GND, linear photoconductor in precision photoelectric coupler U8
5 foot of anode of photoelectric tube 2 connects cathode 6 foot point of photoelectric tube 2 in isolation output ground G, precision photoelectric coupler U8 in coupler U8
One end of other connecting resistance R25 and capacitance C7,2 foot of inverting input of amplifier U7,2 foot of fixing end of potentiometer RW3 with
3 foot of adjustable side is connected, another 1 foot of fixing end of another termination potentiometer RW3 of resistance R25, the homophase input of amplifier U7
Hold 3 feet to meet isolation output ground G, 6 foot of output terminal of amplifier U7 connect respectively the other end of capacitance C7, one of potentiometer RW3 it is solid
2 foot of fixed end, zeroing 1 foot of end of amplifier U7 connect 1 foot of fixing end of potentiometer RW2, another tune of amplifier U7
Zero end, 8 foot connects another 2 foot of fixing end of potentiometer RW2,3 foot of adjustable side of potentiometer RW2 and the power supply anode 7 of amplifier U7
Foot, which is connected, is followed by outlet side in-line power anode+Vcc2 in auxiliary power supply circuit, and 4 foot of power supply negative terminal of amplifier U7 connects auxiliary and supplies
Outlet side in-line power negative terminal-Vcc2 in circuit；
In the isolation High voltage output and feedback of voltage and current circuit, 1 foot of Same Name of Ends of transformer TRF secondary windings Ls passes through electricity
Hold C9 and connect one end of capacitance C11, the anode of diode D3, the cathode of diode D4 respectively, the other end of capacitance C11 connects two respectively
Anode, the cathode of diode D6 of pole pipe D5, capacitance C22, diode D7, resistance R17 are in parallel, transformer TRF secondary windings Ls
2 foot of different name end connect the cathode of diode D3, one end of resistance R26 and capacitance C10 and C23, the anode of diode D7 respectively, two
The cathode of pole pipe D7 meets isolation output ground G and draws, one end of the other end difference connecting resistance R34 and capacitance C12 of capacitance C10,
Anode, the cathode of diode D5 of diode D4, the other end of capacitance C12 meet the anode of diode D6, the one of resistance R16 respectively
End, the other end of resistance R16 connect one end of capacitance C25 and resistance R33 respectively, and another termination isolation of capacitance C25 exports ground G,
Resistance R22 is in parallel with capacitance C14 after connecting with resistance R24, and the one of the other end difference connecting resistance R36 and capacitance C14 of resistance R33
Hold and be used as high-voltage output end Vo+ to draw, diode D9 and D10 forward connect, the cathode difference connecting resistance R34 of diode D9 and
The other end of capacitance C23, the anode of diode D10 pass through the other end of resistance R35 connecting resistances R36, resistance R21 and capacitance C16
Parallel connection, 2 foot of the inverting input difference connecting resistance R18 of amplifier U5A and one end of resistance R23 and capacitance C15, resistance R23's
The other end of another termination capacitor C14, one end of 3 foot of the in-phase input end difference connecting resistance R21 of amplifier U5A, auxiliary power supply
One end of 1 foot of output terminal difference the connecting resistance R19 and R20 of outlet side reference voltage terminal Vr1 in circuit, amplifier U5A, capacitance
The other end of C15, power supply 4 foot of negative terminal of amplifier U5A is connected with the other end of resistance R18 and R20 and R21 respectively to be followed by isolating
Output ground G, 8 foot of power supply anode of amplifier U5A connect outlet side in-line power anode+Vcc2, amplifier in auxiliary power supply circuit
6 foot of the inverting input difference connecting resistance R30 of U5B and one end, the other end of resistance R26 of capacitance C19 and C20, resistance R30's
Another termination outlet side reference voltage terminal Vr1, resistance R29 and capacitance C26 are in parallel, 5 foot of the in-phase input end difference of amplifier U5B
One end of connecting resistance R29 and resistance R31, another termination lamp current of resistance R31 isolate amplifier U7 in linear transform circuit
6 foot of output terminal, 7 foot of output terminal of amplifier U5B meet the cathode of diode D11, the other end of capacitance C19, diode D11 respectively
Anode connect the cathode of capacitance C18, one end of resistance R27 respectively, one end of the other end difference connecting resistance R28 of resistance R27, three
The base stage of pole pipe T2, the anode with capacitance C18, the other end of resistance R28 and R29 are connected and are followed by the emitter of triode T2 respectively
The collector of isolation output ground G, triode T2 connect one end, the photoelectricity coupling of capacitance C17 respectively after being connected with the other end of resistance R19
1 foot of input diode cathode of clutch U4, the other end phase of 2 foot of input diode anode and capacitance C17 of photoelectrical coupler U4
The cathode of diode D8 is connect after even by resistance R32, the anode of diode D8 connects isolation output ground G, photoelectrical coupler U4 output
4 foot of collector of triode connects in-line power end Vcc in control and drive circuit, the transmitting of photoelectrical coupler U4 output triodes
One end of pole 3 foot difference connecting resistance R11 and R12, another termination input ground GND of resistance R12, another termination control of resistance R11
5 feet of control chip U2 in system and drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610667241.0A CN106061085B (en) | 2016-08-15 | 2016-08-15 | A kind of high accuracy has the function of the isolation krypton lamp high-voltage power circuit of current regulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610667241.0A CN106061085B (en) | 2016-08-15 | 2016-08-15 | A kind of high accuracy has the function of the isolation krypton lamp high-voltage power circuit of current regulation |
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| Publication Number | Publication Date |
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| CN106061085A CN106061085A (en) | 2016-10-26 |
| CN106061085B true CN106061085B (en) | 2018-04-20 |
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| CN114071820B (en) * | 2021-11-19 | 2023-10-31 | 杭州泽天春来科技有限公司 | Krypton lamp light source driving circuit |
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| JP2010067564A (en) * | 2008-09-12 | 2010-03-25 | Panasonic Electric Works Co Ltd | Lighting device for discharge lamp, and illumination apparatus |
| CN205946298U (en) * | 2016-08-15 | 2017-02-08 | 东文高压电源（天津）股份有限公司 | High accuracy has isolation krypton lamp high voltage power supply circuit of electric current regulatory function |
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