CN208402180U - A kind of electrodeless lamp power supply driving circuit - Google Patents
A kind of electrodeless lamp power supply driving circuit Download PDFInfo
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- CN208402180U CN208402180U CN201820865683.0U CN201820865683U CN208402180U CN 208402180 U CN208402180 U CN 208402180U CN 201820865683 U CN201820865683 U CN 201820865683U CN 208402180 U CN208402180 U CN 208402180U
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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 utility model discloses a kind of electrodeless lamp power supply driving circuits, it is intended to provide a kind of reliable and stable electrodeless lamp power supply driving circuit, its key points of the technical solution are that including for filtering out the high-frequency impulse of power grid and exporting the EMI filter rectifier of DC pulse moving voltage, for DC pulse moving voltage to be converted into the PFC circuit of power factor correction of 400V DC voltage, the half-bridge circuit of Non-polarized lamp voltage can be lighted by adjusting the output of its switching frequency, for detecting abnormal voltage and turning off the single chip control module of PFC circuit of power factor correction and half-bridge circuit power supply, for PFC circuit of power factor correction, the accessory power supply that half-bridge circuit is individually powered.IRS27952 is in conjunction with the internal resistance of switching tube Q2 and Q3, and control is due to the short circuit of user's factor or high current, the time of microsecond caused by opening a way are protected rapidly, will not all burn power supply in any case, protect half-bridge circuit.
Description
Technical field
The utility model relates to Non-polarized lamp field, in particular to a kind of electrodeless lamp power supply driving circuit.
Background technique
HF lamp without electrodes are that one kind can be coupled in light bulb by high-frequency electromagnetic with induction mode, make inert gas in light bulb
Avalanche ionization forms plasma, and plasma excited atom gives off the ultraviolet light of 254nm, bulb inner wall when returning to ground state
A kind of visible light of strong illumination that is issued by ultraviolet excitation of fluorescent powder.Existing Non-polarized lamp mainly consists of three parts:
Ballast, coupler and Non-polarized lamp.Its working principle is: alternating current is converted to direct current first, is re-transformed into high-frequency electrical energy,
High-frequency electrical energy generates high-intensity magnetic field by the induction coil (coupler) in Non-polarized lamp centre, and magnetic field energy incudes into Non-polarized lamp,
Gas avalanche in Non-polarized lamp is set to ionize to form plasma, the mercury atom of being excited in plasma radiates during returning to ground state
The ultraviolet light of 254nm out, Non-polarized lamp inner wall fluorescent powder receive ultraviolet light irradiation and are converted into visible light.
Currently, the Chinese patent that notification number is CN201623910U discloses a kind of filter circuit of electrodeless lamp ballast, it
Further include two electrolytic capacitors C1, C2 including EMI circuit, is parallel to PFC power factor correction circuit and high frequency after the two series connection
Between inverter circuit.
But when lighting Non-polarized lamp, it is possible that electrodeless lamp aging, Non-polarized lamp gas leakage, Non-polarized lamp failure, magnet ring temperature
Degree increases situations such as saturation, magnet ring fragmentation, output short-circuit, output open circuit, may cause and generates high current destruction circuit in circuit.
Utility model content
The purpose of the utility model is to provide a kind of electrodeless lamp power supply driving circuits, with the excellent of effective protection circuit
Point.
The purpose of this utility model has the technical scheme that
A kind of electrodeless lamp power supply driving circuit, it is characterised in that: including
EMI filter rectifier for filtering out interference of the high-frequency impulse to power supply of power grid, and exports DC pulse electricity
Pressure；
DC pulse moving voltage is converted into 400V direct voltage output by PFC circuit of power factor correction；
Half-bridge circuit can light the voltage of Non-polarized lamp by adjusting the output of its switching frequency, while sample Non-polarized lamp both ends
Voltage VNAnd it exports；
Accessory power supply is that PFC circuit of power factor correction and half-bridge circuit are powered；
Single chip control module, single chip control module include single-chip microcontroller IC2, single-chip microcontroller IC2 respectively with PFC power factor
Correcting circuit, half-bridge circuit, accessory power supply connection, single-chip microcontroller IC2 detect VN, work as VNElectric voltage exception, single-chip microcontroller IC2 turn off PFC
Circuit of power factor correction and half-bridge circuit power supply.
By using above-mentioned technical proposal, EMI filter rectifier input terminal is connect with power grid, through EMI filter rectification electricity
DC pulse moving voltage is exported in its output end after the rectifying and wave-filtering of road；The input terminal access DC pulse moving voltage of accessory power supply simultaneously carries out
Then conversion exports 15V DC voltage in its output end and powers to PFC circuit of power factor correction and half-bridge circuit；PFC power
Factor correcting circuit input terminal access DC pulse moving voltage is simultaneously converted, and then exports 400V DC voltage in its output end；
Half-bridge circuit accesses 400V DC voltage, and the voltage of Non-polarized lamp is lighted by adjusting the output of its switching frequency；Single-chip microcontroller controls mould
Block connects PFC circuit of power factor correction, half-bridge circuit, accessory power supply, when detecting VNElectric voltage exception, single-chip microcontroller IC2 close
Disconnected PFC circuit of power factor correction and half-bridge circuit power supply, protect circuit.
Further setting: the accessory power supply includes power switch chip IC 1 and step-down transformer L3, accessory power supply input
End is connect with EMI filter plate rectification module, and exports 15V DC voltage in auxiliary power output end, and power switch chip IC 1 uses
GK124。
By using above-mentioned technical proposal, step-down transformer and the cooperation of power switch chip IC 1 export stable 15V direct current
Voltage.
Further setting: the single chip control module further includes three-terminal voltage-stabilizing pipe D13, and three-terminal voltage-stabilizing pipe D13 is used
78L05,78L05 connect auxiliary power output end and 15V DC voltage are converted into 5V DC voltage supply single-chip microcontroller IC2.
By using above-mentioned technical proposal, 78L05 inputs 15V DC voltage, exports fixed 5V DC voltage.
Further setting: the half-bridge circuit includes half-bridge driven chip IC4 and two switching tubes Q2 and Q3, two switches
Pipe Q2 and Q3 constitute half-bridge structure, and the switching frequency that half-bridge driven chip IC4 adjusts two switching tubes Q2 and Q3 makes half-bridge electric
Road exports 2000V voltage in output end.
By using above-mentioned technical proposal, half-bridge circuit exports 2000V voltage in output end, can satisfy light nothing in this way
The condition of pole lamp.
Further setting: the half-bridge driven chip IC4 uses IRS27952, when the internal resistance that electric current flows through switching tube Q2 is made
At pressure drop be more than 3V shutdown half-bridge circuit.
By using above-mentioned technical proposal, when the electric current for flowing through switching tube Q2 becomes larger, and the internal resistance for passing through Q2 is caused
Pressure drop when being more than 3V, IRS27952 detects the signal, turn off half-bridge circuit rapidly, due to IRS27952 working frequency most
A height of 500kHz, so can reach the protection of nanosecond.
Further setting: the PFC circuit of power factor correction includes PFC chip IC 3 and switching tube Q1,
PFC chip IC 3 uses L6561.
By using above-mentioned technical proposal, the multiplier inside L6561 is compared according to the parameter that 1 foot and 3 feet acquire
With operation, the pulse duty factor of 7 feet is determined, maintain output voltage stabilization.Control of the switching tube Q1 in the 7 foot driving pulses of L6561
For the lower work of system in switch state, the switch state by change switching tube Q1 is defeated in the output end of PFC circuit of power factor correction
Stable 400V DC voltage out.
Further setting: the single-chip microcontroller IC2 uses PIC12F675, the end the GP2 connection half-bridge circuit inspection of PIC12F675
Survey VN, the end GP0 of PIC12F675 passes through the end VCC of phase inverter Q4 connection PFC chip L6561, PIC12F675's
The end GP1 passes through the end VCC of phase inverter Q5 connection half-bridge driven chip IRS27952.
By using above-mentioned technical proposal, when the end GP2 of PIC12F675 detects abnormal voltage, PIC12F675 passes through
Phase inverter Q4 and Q6 are turned off to PFC chip L6561 and half-bridge driven chip IRS27952 power supply.
In conclusion the utility model has the following beneficial effects:
1, it is supplied by setting accessory power supply to PFC chip IC 3, single-chip microcontroller IC2, half-bridge driven chip IC4
Electricity, guarantee power factor correcting chip IC3, single-chip microcontroller IC2, half-bridge driven chip IC4 steady operation；
2, IRS27952 is in conjunction with the internal resistance of switching tube Q2 and Q3, and control is due to caused by the short circuit of user's factor or open circuit
The time of high current, microsecond is protected rapidly, will not all burn power supply in any case, protects half-bridge circuit；
3, single chip control module samples output end, to the operating voltage of PFC circuit of power factor correction, half-bridge circuit
It is controlled, realizes that starting unsuccessfully restarts 10 times, makes to start voltage change when electrodeless lamp aging starting voltage is got higher or is failed
It, which can cut off the power rapidly, when high, coupling inductance saturation, Non-polarized lamp failure do not start carries out effective protection.
Detailed description of the invention
Fig. 1 is the circuit diagram of electrodeless lamp power supply driving circuit in embodiment 1；
Fig. 2 is the timing diagram of electrodeless lamp power supply driving circuit control method in embodiment 2.
In figure, 1, EMI filter rectifier；2, PFC circuit of power factor correction；3, half-bridge circuit；4, single-chip microcontroller controls
Module；5, accessory power supply.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment 1: a kind of electrodeless lamp power supply driving circuit, as shown in Figure 1, include for filter out the high-frequency impulse of power grid and
Export EMI filter rectifier 1, the PFC for DC pulse moving voltage to be converted into 400V DC voltage of DC pulse moving voltage
Circuit of power factor correction 2 can light the half-bridge circuit 3 of Non-polarized lamp voltage, for detecting by adjusting the output of its switching frequency
Abnormal voltage simultaneously turns off the single chip control module 4 of 3 power supply of PFC circuit of power factor correction 2 and half-bridge circuit, is PFC power
The accessory power supply 5 that factor correcting circuit 2, half-bridge circuit 3 and single chip control module 4 are individually powered.
EMI filter rectifier 1 includes protective tube F1, varistor 10D471, two concatenated common mode filtering inductance L1
And L2, it further include five capacitors C1, C2, C3, C4, C28 and a full-wave rectifier, full-wave rectifier is by four diode D1 groups
At bridge rectifier, the centre tap of full-wave rectifier is grounded, and varistor 10D471 is mainly for the protection of because of network voltage
Moment may damage when increasing caused by LED power driving circuit and LED.EMI filter rectifier 1 can not only filter out outer
Interference of the high-frequency impulse of boundary's power grid to power supply, while also functioning to and reducing power supply itself to extraneous electromagnetic interference.
Accessory power supply 5 includes rectifier diode D3 and filter capacitor C10, filter capacitor C14 cathode ground connection.Accessory power supply 5
It further include step-down transformer L3, the primary side series capacitance C24 and diode rectification D5 of step-down transformer L3, parallel connection on capacitor C24
One resistance R19.Secondary side one rectifier diode D6 of series connection of step-down transformer L3 is simultaneously exported in the output end of accessory power supply 5
15V DC voltage.Accessory power supply 5 further includes a power switch chip IC 1, and power switch chip IC 1 uses GK124, power supply
1 foot and 2 feet of switch chip IC1 is grounded simultaneously, and 3 feet meet capacitor C12, capacitor C12 ground connection, at the same draw concatenated resistance R26,
Schottky diode D4 and rectifier diode D7 is most followed by the output end of accessory power supply 5.4 feet of power switch chip IC 1 are connected
Capacitor C13 and C11, C11 cathode ground connection, anode connect the output end of accessory power supply 5.5 feet, 6 feet, 7 feet of power switch chip IC 1
Step-down transformer L3 primary side is connect with 8 feet.
PFC circuit of power factor correction 2 includes PFC chip IC 3, inductance L4, switch Q1, rectifier diode
D2 and three filter capacitor C5, C25, PFC chip IC 3 use L6561 or L6562, Q1 to be one and high-power open
Guan Guan, is resistant to 400V high pressure, and grid G is that square-wave signal control is generated by L6561.There is a pulsating volage in D2 anode, passes through D2
400V DC voltage is formed with after C25 rectification.Accessory power supply 5 export 15V DC voltage by R12 access L6561 8 feet be
L6561 power supply.1 foot of L6561 and 2 tapes have voltage comparator circuit, it can relatively control output using voltage, that is, input
Voltage is between 85~300V, preferably between 90~300V, or preferably between 85~280V variation can guarantee have
Stable output voltage.In addition, the circuit may also be arranged to stop output when brownout.Due to circuit have overcurrent protection and
Overvoltage protection effect, can prevent power grid from impacting to main road high frequency transient.3 tapes of L6561 have a multiplier, pass through pulsewidth modulation
It improves efficiency.L6561 foot 5 has a Current differencing amplifier, is externally entering electric current and reaches overcurrent protection after current detecting.
There is OVP circuit in L6561, there is overvoltage protection effect, prevents power grid from impacting to main road high frequency transient.
The variation of input voltage is added to 3 feet of L6561 after R1, R24, R25 partial pressure, is sent to internal multiplier.Output electricity
The variation of pressure is inputted after R14, R17, R18 partial pressure by 1 foot of L6561, after inside is relatively amplified, is also sent to built-in multiplication
Device.L6561 multiplier is compared according to these parameters of input and operation, determines the pulse duty factor of 7 foot of output end, maintains
The stabilization of output voltage.Under certain output power, when input voltage reduces, the pulse duty factor of the 7 feet output of L6561 becomes
Greatly；When input voltage increases, the pulse duty factor of the 7 feet output of L6561 becomes smaller.
Switching tube Q1 works under the control of the 7 foot driving pulses of L6561 in switch state.When Q1 conducting, by all-wave
D-S pole of the voltage through inductance L3, Q1 to ground after rectifier rectification, forming circuit；When Q1 cut-off, rectified by full-wave rectifier
The voltage of output charges to C25 through inductance L3, D2, C25 to ground.Meanwhile the electric current of L3 is flowed through in reduction trend, inductance both ends
Necessarily lead to left negative right positive induced voltage, the DC component after this induced voltage is rectified with full-wave rectifier is superimposed, is filtering
Wave capacitor C25 anode forms the DC voltage of 400V or so, and this not only increases the efficiency of power utilization power grid, and make
The waveform of the current waveform and input voltage that flow through L3 reaches unanimity, to achieve the purpose that increase power factor.
Half-bridge circuit 3 includes two switching tubes Q2 and Q3, capacitor C6, inductance L5 and half-bridge driven chip IC4, Q2 and Q3 group
At half-bridge structure.Half-bridge driven chip IC4 controls the switch of Q2, Q3, and steady dc voltage is handed over according to the frequency of 200KHZ
For switch, with L5, C7, C8 resonance, at the end N1, output is up to the voltage of 2000V, and (meet Non-polarized lamp lights condition) lights nothing
Pole lamp, the internal resistance for lighting Non-polarized lamp after Non-polarized lamp sharply decline, and output loses resonance, and resonant inductance gives Non-polarized lamp current limliting, makes nothing
Pole lamp works in rated power.
Half-bridge driven chip IC4 uses IR27952, IRS27952 to provide overcurrent protection, and every road working frequency is up to
500kHz may be programmed soft starting time and frequency and dead time.IRS27952 is mentioned using the on state resistance of lower edge switch pipe
For overcurrent protection.Voltage drop-down is made it below into enabled voltage threshold by external CT/SD pin, IRS27952 can
It stops working.IR27952 drive two switching tubes Q2 and Q3, have dead time and have 50% fixed duty cycle, can basis
Feedback signal carrys out regulating switch frequency, to adjust constant current with the variation of input voltage for load.IRS27952 with open
The internal resistance for closing pipe Q2 and Q3 combines, control high current, microsecond due to the short circuit of user's factor or caused by opening a way
Time protect rapidly, will not all burn power supply in any case, protect half-bridge circuit 3.
Microcomputer control module includes single-chip microcontroller IC2, and single-chip microcontroller IC2 uses PIC12F675, the vdd terminal of PIC12F675 and
The end VSS is connected to three-terminal voltage-stabilizing pipe D13, and three-terminal voltage-stabilizing pipe D13 uses 78L05, three-terminal voltage-stabilizing pipe D13 to be connected to accessory power supply
15V DC voltage is converted into 5V DC voltage supply PIC12F675 and used by 5 output ends, three-terminal voltage-stabilizing pipe D13.
The end GP0 of PIC12F675 is then attached to half-bridge circuit 3 by resistance R22, and the end GP1 of PIC12F675 passes through electricity
Resistance R15 is then attached to PFC circuit of power factor correction 2.It is wound with secondary coil on inductance L5, to detect output voltage
VN, the end QY exports after D8 rectification, C9 filtering, R9, R10 partial pressure, for the port the GP2 sample detecting of single-chip microcontroller IC2.For monolithic
The GP1 of machine IC2 passes through the end VCC of phase inverter Q4 connection PFC Power Correction Factor chip IC；The end GP0 of single-chip microcontroller IC2 passes through anti-
Phase device Q5 connection half-bridge driven chip IC4 is protected when detecting the abnormal power supply with regard to high speed turn-off PFC and half bridge control chip
Circuit.
Embodiment 2: a kind of electrodeless lamp power supply driving circuit control method, as illustrated in fig. 1 and 2, including above-mentioned Non-polarized lamp
Power driving circuit, the specific steps are as follows:
S1: single-chip microcontroller PIC12F675 GP2 Port detecting starts timing when starting to work to power supply, half-bridge electricity in 85ms
Road 3 exports ceiling voltage and lights Non-polarized lamp progress first time starting；
S2: if Non-polarized lamp starting failure high pressure continue, that is, PIC12F675 the port GP2 85ms when detect height
Signal is pressed, GP1 exports high level, turns off by phase inverter Q4 to PFC chip IC 3 and powers；Half-bridge circuit 3 simultaneously
Be delayed 200ms, and the output DC voltage of PFC circuit of power factor correction 2 is allowed to be down to 310V by 400V, and GP0 exports high level, leads to
Phase inverter Q5 is crossed to turn off to half-bridge driven chip IC4 power supply；
Restore PFC chip IC 3 and half-bridge driven chip IC4 power supply after S3:500ms；
S4: enter second of starting Non-polarized lamp and repeat above-mentioned S1-S3, until lighting Non-polarized lamp；
Non-polarized lamp can not be lighted for S5: continuous ten times, single-chip microcontroller IC2 determines Non-polarized lamp failure, the GP0 and GP1 of single-chip microcontroller IC2
High level is exported simultaneously, is turned off by phase inverter Q4 to PFC chip IC 3 and is powered, is turned off by phase inverter Q6 to half
Bridge driving chip IC4 power supply, into protected mode, into protected mode after need to close power supply and re-power and can just be again introduced into
Start-up mode；
S6: meeting S1, if Non-polarized lamp is lighted, single-chip microcontroller IC2 can't detect continuous high-pressure, the GP1 of single-chip microcontroller IC2 in 85ms
Low level is exported with GP0, continues to power to PFC chip IC 3 and half-bridge driven chip IC4, into operating mode；
S7: in normal work, since electrodeless lamp aging, Non-polarized lamp gas leakage, Non-polarized lamp failure, magnet ring temperature increase, magnet ring
The abnormal signals such as fragmentation, when the end GP2 detects the abnormal output signal not in detection range, detection range 0.3V-
The GP0 and GP1 of 2.45V, single-chip microcontroller IC2 export high level simultaneously, are turned off by phase inverter Q4 to PFC chip IC 3
Power supply is turned off to half-bridge driven chip IC4 by phase inverter Q6 and is powered, into protected mode；
S8: it is again started up Non-polarized lamp and repeats above-mentioned S1-S3, until lighting Non-polarized lamp；
S9: if can not light Non-polarized lamp for continuous ten times, single-chip microcontroller IC2 determines Non-polarized lamp failure, the GP0 of single-chip microcontroller IC2
High level is exported simultaneously with GP1, is turned off by phase inverter Q4 to PFC chip IC 3 and is powered, closed by phase inverter Q6
Break and power to half-bridge driven chip IC4, into protected mode, into protected mode after need to close power supply re-powers could again
It is secondary to enter start-up mode.
The above embodiments are only the explanation to the utility model, are not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (7)
1. a kind of electrodeless lamp power supply driving circuit, it is characterised in that: including
EMI filter rectifier (1) for filtering out interference of the high-frequency impulse to power supply of power grid, and exports DC pulse moving voltage；
DC pulse moving voltage is converted into 400V direct voltage output by PFC circuit of power factor correction (2)；
Half-bridge circuit (3) can light the voltage of Non-polarized lamp by adjusting the output of its switching frequency, while sample Non-polarized lamp both ends
Voltage VNAnd it exports；
Accessory power supply (5), is PFC circuit of power factor correction (2) and half-bridge circuit (3) is powered；
Single chip control module (4), single chip control module (4) include single-chip microcontroller IC2, single-chip microcontroller IC2 respectively with PFC power because
Number correcting circuit (2), half-bridge circuit (3), accessory power supply (5) connection, single-chip microcontroller IC2 detect VN, work as VNElectric voltage exception, monolithic
Machine IC2 turns off PFC circuit of power factor correction (2) and half-bridge circuit (3) power supply.
2. a kind of electrodeless lamp power supply driving circuit according to claim 1, it is characterised in that: the accessory power supply includes electricity
Source switch chip IC 1 and step-down transformer L3, accessory power supply (5) input terminal are connect with EMI filter rectifier (1), and auxiliary
Power supply (5) output end is helped to export 15V DC voltage, power switch chip IC 1 uses GK124.
3. a kind of electrodeless lamp power supply driving circuit according to claim 2, it is characterised in that: the single chip control module
It (4) further include three-terminal voltage-stabilizing pipe D13, three-terminal voltage-stabilizing pipe D13 uses 78L05, and 78L05 connection accessory power supply (5) output end is by 15V
DC voltage is converted into 5V DC voltage supply single-chip microcontroller IC2.
4. a kind of electrodeless lamp power supply driving circuit according to claim 3, it is characterised in that: half-bridge circuit (3) packet
Half-bridge driven chip IC4 and two switching tubes Q2 and Q3 are included, two switching tubes Q2 and Q3 constitute half-bridge structure, half-bridge driven chip
The switching frequency that IC4 adjusts two switching tubes Q2 and Q3 makes half-bridge circuit (3) export 2000V voltage in output end.
5. a kind of electrodeless lamp power supply driving circuit according to claim 4, it is characterised in that: the half-bridge driven chip
IC4 uses IRS27952, and the pressure drop caused by the internal resistance that electric current flows through switching tube Q2 is more than 3V shutdown half-bridge circuit (3).
6. a kind of electrodeless lamp power supply driving circuit according to claim 5, it is characterised in that: PFC power factor school
Positive circuit (2) includes PFC chip IC 3 and switching tube Q1, and PFC chip IC 3 uses L6561.
7. a kind of electrodeless lamp power supply driving circuit according to claim 6, it is characterised in that: the single-chip microcontroller IC2 is used
The end GP2 connection half-bridge circuit (3) of PIC12F675, PIC12F675 detect VN, the end GP0 of PIC12F675 passes through phase inverter Q4
The end VCC of PFC chip L6561 is connected, the end GP1 of PIC12F675 passes through phase inverter Q5 connection half-bridge driven chip
The end VCC of IRS27952.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820865683.0U CN208402180U (en) | 2018-06-04 | 2018-06-04 | A kind of electrodeless lamp power supply driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820865683.0U CN208402180U (en) | 2018-06-04 | 2018-06-04 | A kind of electrodeless lamp power supply driving circuit |
Publications (1)
| Publication Number | Publication Date |
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| CN208402180U true CN208402180U (en) | 2019-01-18 |
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| CN201820865683.0U Expired - Fee Related CN208402180U (en) | 2018-06-04 | 2018-06-04 | A kind of electrodeless lamp power supply driving circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108712812A (en) * | 2018-06-04 | 2018-10-26 | 江阴万佳照明电器有限公司 | A kind of electrodeless lamp power supply driving circuit and control method |
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2018
- 2018-06-04 CN CN201820865683.0U patent/CN208402180U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108712812A (en) * | 2018-06-04 | 2018-10-26 | 江阴万佳照明电器有限公司 | A kind of electrodeless lamp power supply driving circuit and control method |
| CN108712812B (en) * | 2018-06-04 | 2024-02-06 | 江阴万佳照明电器有限公司 | Electrodeless lamp power supply driving circuit and control method |
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