CN106061084B - A kind of high accuracy mercury lamp high-voltage module power supply special - Google Patents
A kind of high accuracy mercury lamp high-voltage module power supply special Download PDFInfo
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- CN106061084B CN106061084B CN201610667232.1A CN201610667232A CN106061084B CN 106061084 B CN106061084 B CN 106061084B CN 201610667232 A CN201610667232 A CN 201610667232A CN 106061084 B CN106061084 B CN 106061084B
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of high-precision mercury lamp high-voltage module power supply special, including the power circuit in metal mesh box, power circuit includes exchange input rectifying filter circuit, AC/DC isolated variable circuits, lamp current control and output circuit are further included, AC/DC isolated variables circuit is connected with exchange input rectifying filter circuit, lamp current control and output circuit respectively.Effect is：This mercury lamp high-voltage module power supply is inputted using alternating current 220V, is user-friendly；Dynamic response is fast, and electromagnetic interference is small；Frequency amplitude adjustment control is determined using auto-oscillation type, push-pull type driving structure, output power is larger, and precision of steady current is high；Adjusting and monitoring function with output lamp current, realize the Linear Control of mercury lamp light intensity；Work, the integrated design of build-up of luminance high pressure, improve the reliability of power supply, extend mercury lamp service life；Compact overall structure, small on year-on-year basis, long-term working stability is good.
Description
Technical field
The present invention relates to a kind of high-precision mercury for being widely used in the fields such as illumination, medicine, fluorescence analysis, semiconductor lithography
Lamp high-voltage module power supply special.
Background technology
Existing mercury lamp power supply product largely uses direct current supply, and power supply power consumption is high, volume is larger, it has not been convenient to which user makes
With.Starting voltage and operating voltage are usually independent control, and circuit is more complicated, and electromagnetic interference is larger, dynamic response is slow, output
Lamp current precision is not high, and lamp current is non-adjustable.Continuous with mercury lamp application field expands, and the performance of mercury lamp power supply is proposed
Requirements at the higher level, appearance and size is small, and energy consumption is low, and precision of steady current is high and adjustable, and Alternating Current Power Supply input etc. becomes becoming for future development
Gesture.
The content of the invention
In view of the deficiencies in the prior art, the present invention provides a kind of circuit is simple, dynamic response is fast, alternating voltage input,
The integrated design of build-up of luminance working voltage, the adjustable high-precision mercury lamp high-voltage module power supply special of lamp current.
The present invention to achieve the above object, is adopted the technical scheme that：A kind of high accuracy mercury lamp special high-pressure module electricity
Source, including the power circuit in metal mesh box, the power circuit include exchange input rectifying filter circuit, AC/DC
Isolated variable circuit, it is characterised in that：Further include lamp current control and output circuit, the AC/DC isolated variables circuit difference
It is connected with exchange input rectifying filter circuit, lamp current control and output circuit, power circuit is equipped with six exits and one
Outside adjusts potentiometer；
Physical circuit is connected as：In the lamp current control and output circuit, the different name of transformer TRF1 secondary coils Ls1
1 foot is held to connect the cathode of diode D4, the anode of diode the D4 cathode with capacitance C7, resistance R3 and R5 and R6 and inductance L2 respectively
One end connection, the anode of capacitance C7 be connected with 2 foot of Same Name of Ends of transformer TRF1 secondary coils Ls1 is followed by output ground G, control
1 foot of feeder ear of chip U3 and 8 foot of high side suspended power supply anode of control chip U3 be connected after respectively the cathode with capacitance C8,
Anode, the other end of resistance R3 of diode D15 connects and is used as in-line power end Vcc, anode and the diode D15 of capacitance C8
Cathode be connected and be followed by output ground G, 2 foot of fixing end of potentiometer RW1 is connected with 3 foot of adjustable side, and control chip U3's shakes
Swing 2 foot of fixing end that 2 foot of device timing resistor input terminal meets potentiometer RW1 by resistance R4, another fixing end of potentiometer RW1
1 foot is connected with one end of capacitance C9 and 3 foot of oscillator timing capacitor input terminal of control chip U3 respectively, the other end of capacitance C9
It is connected respectively with 4 foot of ground terminal of control chip U3 and 6 foot of high pressure suspending power supply negative terminal of control chip U3 and is followed by output ground G,
Resistance R10 is in parallel with diode D13, and 5 foot of lowside gate driver output end of control chip U3 connects the anode of diode D13,
One end with capacitance C18, the grid of MOS triodes T2 are connected the cathode of diode D13 respectively, the other end and MOS of capacitance C18
The source electrode of triode T2, which is connected, is followed by the drain anode with luminous tube D7, the transformer respectively of output ground G, MOS triodes T2
The different name end g feet connection of TRF2 primary coils Lp2-2, one end of the cathode connecting resistance R12 of luminous tube D7, resistance R8 and diode
D12 is in parallel, and 7 foot of high side gate driver output end of control chip U3 connects the anode of diode D12, the cathode of diode D12
The grid with MOS triodes T1, one end of capacitance C17 are connected respectively, the other end of capacitance C17 and the source electrode of MOS triodes T1
It is connected and is followed by the drain other end with resistance R12, the transformer TRF2 primary coils Lp2- respectively of output ground G, MOS triodes T1
1 Same Name of Ends e feet connection, the other end of inductance L2 respectively with the cathode of capacitance C11 and transformer TRF2 primary coils Lp2-1
The f feet connection of different name end, the anode of capacitance C11 meet output ground G, and 3 foot of Same Name of Ends of transformer TRF2 secondary coils Ls2 passes through inductance
L3 connects one end of capacitance C12 and is drawn as one of output terminal Voh, the different name end 4 foot difference of transformer TRF2 secondary coils Ls2
Cathode, the anode of diode D9 of the other end, diode D8 with capacitance C12 are connected, and resistance R13 is in parallel with capacitance C13, two poles
Pipe D8 distinguishes one end of connecting resistance R13 and R14, the cathode of diode D10 and bearing for diode D11 after being connected with the anode of D10
Extremely it is connected and is drawn as another output end vo l, the cathode of diode D11 and D9 are connected with the other end of resistance R13 is followed by
Output ground G is simultaneously drawn, and 2 foot of fixing end of potentiometer RW2 is connected with 3 foot of adjustable side, the other end of resistance R14 respectively with electricity
Hinder the cathode connection of one end of R15,2 foot of fixing end of potentiometer RW2, capacitance C14, the in-phase input end 3 of amplifier U5A
One end of foot difference connecting resistance R18, the other end of resistance R15,8 foot of power supply anode of amplifier U5A meet in-line power end Vcc,
4 foot of power supply negative terminal of amplifier U5A respectively the other end with resistance R18, the anode of capacitance C14 be connected be followed by output ground G, amplification
One end of 1 foot of the output terminal difference connecting resistance R16 and capacitance C19 of device U5A, 2 foot of inverting input of amplifier U5A connect electricity respectively
One end, the other end of capacitance C19 of R17 is hindered, resistance R16 is connected with the other end of R17 and is used as lamp current display end Idis to draw
Go out, the control of another 1 foot of fixing end of potentiometer RW2 one end with capacitance C10, one end of resistance R7 and a reference source U4 respectively
1 foot is held to connect, the other end of capacitance C10 3 foot of cathode, the cathode of zener diode D5, two pole of voltage stabilizing with a reference source U4 respectively
The anode of pipe D14 is connected with the anode of capacitance C16, the other end of resistance R7 2 foot of anode with a reference source U4, two pole of voltage stabilizing respectively
The cathode of pipe D14, which is connected, is followed by output ground G, the anode of zener diode D5 connect respectively the cathode of capacitance C16, resistance R6 it is another
The anode of photoelectrical coupler U2 input diodes in end, AC/DC isolated variable circuits, another termination AC/DC isolation of resistance R5
1 foot of cathode of photoelectrical coupler U2 input diodes in translation circuit.
The beneficial effects of the invention are as follows：This mercury lamp high-voltage module power supply is inputted using alternating current 220V, is user-friendly；It is dynamic
State response is fast, and electromagnetic interference is small；Frequency amplitude adjustment control is determined using auto-oscillation type, push-pull type driving structure, output power is larger, current stabilization essence
Degree is high；Adjusting and monitoring function with output lamp current, realize the Linear Control of mercury lamp light intensity；Work, the one of build-up of luminance high pressure
Bodyization designs, and improves the reliability of power supply, extends mercury lamp service life；Compact overall structure, year-on-year small, long-term work
Stability is good.
Brief description of the drawings
The power circuit that Fig. 1 is the present invention connects block diagram；
Fig. 2 is the power circuit principle figure of the present invention；
Fig. 3 is the metal mesh box schematic diagram of the present invention.
Embodiment
As shown in Figure 1, 2, a kind of high-precision mercury lamp high-voltage module power supply special, including the electricity in metal mesh box 1
Source circuit, power circuit include exchange input rectifying filter circuit, AC/DC isolated variable circuits, further include lamp current control and
Output circuit.
AC/DC isolated variables circuit is connected with exchange input rectifying filter circuit, lamp current control and output circuit respectively,
Power circuit is equipped with six exits and an exterior adjusting potentiometer.
In above-mentioned lamp current control and output circuit, 1 foot of different name end of transformer TRF1 secondary coils Ls1 meets diode D4
Cathode, the cathode with capacitance C7, resistance R3 and R5 and one end of R6 and inductance L2 are connected the anode of diode D4 respectively, capacitance
The anode of C7 is connected with 2 foot of Same Name of Ends of transformer TRF1 secondary coils Ls1 is followed by output ground G, the feeder ear 1 of control chip U3
8 foot of high side suspended power supply anode of foot and control chip U3 be connected after respectively the cathode with capacitance C8, diode D15 anode,
The other end of resistance R3 connects and is used as in-line power end Vcc, the anode of capacitance C8 be connected with the cathode of diode D15 be followed by it is defeated
Go out ground G, 2 foot of fixing end of potentiometer RW1 is connected with 3 foot of adjustable side, the oscillator timing resistor input of control chip U3
Hold 2 feet to connect 2 foot of fixing end of potentiometer RW1 by resistance R4, another 1 foot of fixing end of potentiometer RW1 respectively with capacitance C9
One end connected with 3 foot of oscillator timing capacitor input terminal of control chip U3, the other end of capacitance C9 respectively with control chip
4 foot of ground terminal of U3 is connected with 6 foot of high pressure suspending power supply negative terminal of control chip U3 is followed by output ground G, resistance R10 and diode
D13 is in parallel, and 5 foot of lowside gate driver output end of control chip U3 connects the anode of diode D13, the cathode of diode D13
One end with capacitance C18, the grid of MOS triodes T2 are connected respectively, the other end of capacitance C18 and the source electrode of MOS triodes T2
It is connected and is followed by the drain anode with luminous tube D7, the transformer TRF2 primary coils Lp2-2 respectively of output ground G, MOS triodes T2
The connection of different name end g feet, one end of the cathode connecting resistance R12 of luminous tube D7, resistance R8 is in parallel with diode D12, control chip
7 foot of high side gate driver output end of U3 connects the anode of diode D12, the cathode of diode D12 respectively with MOS triodes T1
Grid, capacitance C17 one end connection, the other end of capacitance C17 be connected with the source electrode of MOS triodes T1 is followed by output G,
The other end with resistance R12, the Same Name of Ends e feet of transformer TRF2 primary coils Lp2-1 connect respectively for the drain electrode of MOS triodes T1
Connecing, the other end of inductance L2 is connected with the cathode of capacitance C11 and the different name end f feet of transformer TRF2 primary coils Lp2-1 respectively,
The anode of capacitance C11 meets output ground G, and 3 foot of Same Name of Ends of transformer TRF2 secondary coils Ls2 connects capacitance C12's by inductance L3
One end is simultaneously drawn as one of output terminal Voh, and 4 foot of different name end of transformer TRF2 secondary coils Ls2 is another with capacitance C12 respectively
One end, the anode connection of the cathode of diode D8, diode D9, resistance R13 is in parallel with capacitance C13, and diode D8's and D10 is negative
One end of connecting resistance R13 and R14, the cathode of diode D10 are connected with the anode of diode D11 and are used as another respectively after being extremely connected
One output end vo l is drawn, and the cathode of diode D11 and D9 are connected with the other end of resistance R13 to be followed by output ground G and draw,
2 foot of fixing end of potentiometer RW2 is connected with 3 foot of adjustable side, the other end of resistance R14 one end with resistance R15, electricity respectively
The cathode connection of 2 foot of fixing end, capacitance C14 of position device RW2,3 foot of the in-phase input end difference connecting resistance of amplifier U5A
One end of R18, the other end of resistance R15,8 foot of power supply anode of amplifier U5A connect in-line power end Vcc, the confession of amplifier U5A
Electric 4 foot of negative terminal respectively the other end with resistance R18, the anode of capacitance C14 be connected be followed by output ground G, the output terminal of amplifier U5A
One end of 1 foot difference connecting resistance R16 and capacitance C19, one end of 2 foot of the inverting input difference connecting resistance R17 of amplifier U5A,
The other end of capacitance C19, resistance R16 are connected with the other end of R17 and are used as lamp current display end Idis to draw, potentiometer RW2
1 foot of control terminal of another 1 foot of fixing end one end with capacitance C10, one end of resistance R7 and a reference source U4 respectively be connected, electricity
Hold C10 the other end respectively 3 foot of cathode with a reference source U4, the cathode of zener diode D5, zener diode D14 anode and
The anode connection of capacitance C16, the cathode phase of the other end of resistance R7 2 foot of anode with a reference source U4, zener diode D14 respectively
The anode that company is followed by output ground G, zener diode D5 connects the cathode of capacitance C16, the other end of resistance R6, AC/DC isolation respectively
The anode of photoelectrical coupler U2 input diodes in translation circuit, light in another termination AC/DC isolated variable circuits of resistance R5
1 foot of cathode of electric coupler U2 input diodes.
The model of control chip U3：IR21531, the model of amplifier U5A：LF442.
As shown in figure 3, power circuit has six exits and an outside to adjust potentiometer is located at outside metal mesh box 1 one
Side, outside adjust potentiometer as lamp current adjustable potentiometer Iadj, and six exits are handed over by lamp current display end Idis, power supply
Stream exports high-end Voh, capable AC output low side Vol, output ground G, Alternating Current Power Supply input zero curve N, Alternating Current Power Supply input firewire L
Order arranges.
Due to being powered using AC220V, circuit safety is greatest problem.The isolation of photoelectrical coupler U2 in the design
Pressure-resistant to should be greater than DC2500V, whens transformer TRF1 coilings, need to consider the pressure-resistant problem that insulate；
To ensure to export the precision of lamp current, Low Drift Temperature, high-precision related component have selected；
According to the actual peak power output of mercury lamp, MOS triodes T1 and T2 need to consider heat dissipation problem；
Work, build-up of luminance high pressure integrated design, circuit is simple, compact overall structure, small on year-on-year basis.
It is grounded using metal mesh box, and by metal mesh box, there is good electric screening action, improves the anti-interference energy of power supply
Power.
Operation principle
Input rectification circuit is filtered through capacitance C3 by wave filter L1, rectifier bridge D1 etc., Alternating Current Power Supply 220V rectifications is filtered
After ripple, the DC voltage of 300V or so is obtained.
300V DC voltages after rectification, the direct current supply as AC/DC isolated variable circuits.Pass through the list of TOP series
Piece switch controller U1 and photoelectrical coupler U2, and high frequency transformer TRF1 etc., through feedback control, isolation output, is lamp electricity
Flow control circuit etc. provides regulatable DC voltage.
In lamp current control and output circuit, control chip U3 uses auto-oscillation type half-bridge driver IR21531, with MOS tri-
Pole pipe T1 and T2 and driving transformer TRF2 together, form push-pull type structure, and control section passes through height using frequency modulation width mode is determined
After frequency power transformer TRF2 conversion, the exchange output high pressure of a fixed frequency is obtained.
When lamp current output is zero, export as starting voltage, operating voltage is higher, lights mercury lamp；When there is lamp current
During output, export as maintenance voltage, voltage is relatively low, maintains mercury lamp work.The lamp current of output after diode D8 ~ D11 rectifications,
Its sampled signal is obtained on resistance R13, by by light in a reference source U4, diode D5 and D14, AC/DC isolated variable circuit
The lamp current feedback circuit of the compositions such as electric coupler U2, sets according to the lamp current of RW2, controls the size of lamp current, final steady
Surely the mercury lamp lamp current exported.
In addition, for user convenience, the sampled voltage of lamp current obtains lamp by the follower of the compositions such as chip U5A
Current monitoring voltage.
Claims (2)
1. a kind of high accuracy mercury lamp high-voltage module power supply special, including installed in metal mesh box（1）In power circuit, the electricity
Source circuit includes exchange input rectifying filter circuit, AC/DC isolated variable circuits, it is characterised in that：Further include lamp current control
And output circuit, the AC/DC isolated variables circuit is respectively with exchanging input rectifying filter circuit, lamp current control and output electricity
Road connects, and power circuit is equipped with six exits and an exterior adjusting potentiometer；
Physical circuit is connected as：In the lamp current control and output circuit, the different name end 1 of transformer TRF1 secondary coils Ls1
Foot connects the cathode of diode D4, the anode of diode the D4 cathode with capacitance C7, resistance R3 and R5 and R6 and inductance L2 respectively
One end connects, and the anode of capacitance C7 is connected with 2 foot of Same Name of Ends of transformer TRF1 secondary coils Ls1 is followed by output ground G, controls core
Cathode with capacitance C8, two respectively after 1 foot of feeder ear of piece U3 and 8 foot of high side suspended power supply anode of control chip U3 are connected
Anode, the other end of resistance R3 of pole pipe D15 connects and is used as in-line power end Vcc, and the anode of capacitance C8 is with diode D15's
Cathode, which is connected, is followed by output ground G, and 2 foot of fixing end of potentiometer RW1 is connected with 3 foot of adjustable side, the vibration of control chip U3
2 foot of device timing resistor input terminal connects 2 foot of fixing end of potentiometer RW1, another fixing end 1 of potentiometer RW1 by resistance R4
Foot is connected with one end of capacitance C9 and 3 foot of oscillator timing capacitor input terminal of control chip U3 respectively, the other end of capacitance C9
It is connected respectively with 4 foot of ground terminal of control chip U3 and 6 foot of high pressure suspending power supply negative terminal of control chip U3 and is followed by output ground G,
Resistance R10 is in parallel with diode D13, and 5 foot of lowside gate driver output end of control chip U3 connects the anode of diode D13,
One end with capacitance C18, the grid of MOS triodes T2 are connected the cathode of diode D13 respectively, the other end and MOS of capacitance C18
The source electrode of triode T2, which is connected, is followed by the drain anode with luminous tube D7, the transformer respectively of output ground G, MOS triodes T2
The different name end g feet connection of TRF2 primary coils Lp2-2, one end of the cathode connecting resistance R12 of luminous tube D7, resistance R8 and diode
D12 is in parallel, and 7 foot of high side gate driver output end of control chip U3 connects the anode of diode D12, the cathode of diode D12
The grid with MOS triodes T1, one end of capacitance C17 are connected respectively, the other end of capacitance C17 and the source electrode of MOS triodes T1
It is connected and is followed by the drain other end with resistance R12, the transformer TRF2 primary coils Lp2- respectively of output ground G, MOS triodes T1
1 Same Name of Ends e feet connection, the other end of inductance L2 respectively with the cathode of capacitance C11 and transformer TRF2 primary coils Lp2-1
The f feet connection of different name end, the anode of capacitance C11 meet output ground G, and 3 foot of Same Name of Ends of transformer TRF2 secondary coils Ls2 passes through inductance
L3 connects one end of capacitance C12 and is drawn as one of output terminal Voh, the different name end 4 foot difference of transformer TRF2 secondary coils Ls2
Cathode, the anode of diode D9 of the other end, diode D8 with capacitance C12 are connected, and resistance R13 is in parallel with capacitance C13, two poles
Pipe D8 distinguishes one end of connecting resistance R13 and R14, the cathode of diode D10 and bearing for diode D11 after being connected with the anode of D10
Extremely it is connected and is drawn as another output end vo l, the cathode of diode D11 and D9 are connected with the other end of resistance R13 is followed by
Output ground G is simultaneously drawn, and 2 foot of fixing end of potentiometer RW2 is connected with 3 foot of adjustable side, the other end of resistance R14 respectively with electricity
Hinder the cathode connection of one end of R15,2 foot of fixing end of potentiometer RW2, capacitance C14, the in-phase input end 3 of amplifier U5A
One end of foot difference connecting resistance R18, the other end of resistance R15,8 foot of power supply anode of amplifier U5A meet in-line power end Vcc,
4 foot of power supply negative terminal of amplifier U5A respectively the other end with resistance R18, the anode of capacitance C14 be connected be followed by output ground G, amplification
One end of 1 foot of the output terminal difference connecting resistance R16 and capacitance C19 of device U5A, 2 foot of inverting input of amplifier U5A connect electricity respectively
One end, the other end of capacitance C19 of R17 is hindered, resistance R16 is connected with the other end of R17 and is used as lamp current display end Idis to draw
Go out, the control of another 1 foot of fixing end of potentiometer RW2 one end with capacitance C10, one end of resistance R7 and a reference source U4 respectively
1 foot is held to connect, the other end of capacitance C10 3 foot of cathode, the cathode of zener diode D5, two pole of voltage stabilizing with a reference source U4 respectively
The anode of pipe D14 is connected with the anode of capacitance C16, the other end of resistance R7 2 foot of anode with a reference source U4, two pole of voltage stabilizing respectively
The cathode of pipe D14, which is connected, is followed by output ground G, the anode of zener diode D5 connect respectively the cathode of capacitance C16, resistance R6 it is another
The anode of photoelectrical coupler U2 input diodes in end, AC/DC isolated variable circuits, another termination AC/DC isolation of resistance R5
1 foot of cathode of photoelectrical coupler U2 input diodes in translation circuit.
2. a kind of high-precision mercury lamp high-voltage module power supply special according to claim 1, is further characterized in that：The power supply
Circuit has six exits and an exterior side for adjusting potentiometer and being located at outside metal mesh box 1, and it is lamp that outside, which adjusts potentiometer,
Current adjustment potentiometer Iadj, six exits export high-end Voh, capable AC by lamp current display end Idis, capable AC
Low side Vol, output ground G, Alternating Current Power Supply input zero curve N, Alternating Current Power Supply input firewire L orders is exported to arrange.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610667232.1A CN106061084B (en) | 2016-08-15 | 2016-08-15 | A kind of high accuracy mercury lamp high-voltage module power supply special |
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| CN201610667232.1A CN106061084B (en) | 2016-08-15 | 2016-08-15 | A kind of high accuracy mercury lamp high-voltage module power supply special |
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| CN107607900B (en) * | 2017-10-31 | 2024-02-13 | 国网重庆市电力公司璧山供电分公司 | Electroscope verifying attachment |
| CN110460248A (en) * | 2019-08-23 | 2019-11-15 | 四川甘华电源科技有限公司 | A kind of module power supply circuit for realizing high-voltage isolating |
| CN112055439B (en) * | 2020-09-14 | 2022-04-05 | 孝感瑞奕照明有限责任公司 | Intelligent high-efficiency high-power high-voltage gas lamp power supply management device |
| CN112821782B (en) * | 2021-03-10 | 2023-04-25 | 深圳前海云充科技有限公司 | Wide-voltage AC input power supply module |
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| US4039928A (en) * | 1976-07-19 | 1977-08-02 | Pertron Controls Corporation | Electrical operating circuit having semiconductor device junction temperature monitoring |
| US5367600A (en) * | 1992-07-21 | 1994-11-22 | Wilkerson A W | Motor control for a treadmill having improved power supply and improved speed regulation under intermittent loading |
| CN101742793B (en) * | 2009-12-25 | 2013-01-02 | 东文高压电源（天津）有限公司 | Special high-voltage power supply of zinc element hollow cathode lamp |
| CN203104295U (en) * | 2013-02-01 | 2013-07-31 | 天津领航电气制造有限公司 | Underground detection device power supply of electric submersible pump unit |
| CN205946297U (en) * | 2016-08-15 | 2017-02-08 | 东文高压电源（天津）股份有限公司 | Special high pressure module power of high accuracy mercury lamp |
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