CN203251474U - LED lamp controllable silicon dimming drive circuit - Google Patents
LED lamp controllable silicon dimming drive circuit Download PDFInfo
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- CN203251474U CN203251474U CN 201320236184 CN201320236184U CN203251474U CN 203251474 U CN203251474 U CN 203251474U CN 201320236184 CN201320236184 CN 201320236184 CN 201320236184 U CN201320236184 U CN 201320236184U CN 203251474 U CN203251474 U CN 203251474U
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Abstract
The utility model provides an LED lamp controllable silicon dimming drive circuit which belongs to the technical field of illumination electronics and solves the problem of poor dimming stability when linkage lighting of a number of lamp tubes is carried out. The circuit comprises a controllable silicon dimmer, an input rectification filter unit, an output rectification filter unit, a transformer, a PFC control module and a PWM control module. The controllable silicon dimmer is connected with the input rectification filter unit. The input rectification filter unit is connected with the output rectification filter unit through the transformer. The PFC control module is connected with the output end of the input rectification filter unit and the input end of the PWM control module. The output end of the PWM control unit is connected with the output end of the output rectification filter unit. The PFC control module uses an inductance compensation mode to reduce the phase difference between fundamental wave current of alternating current input and voltage. The PWM control module adjusts a PWM control register according to a switching control instruction to adjust the PWM duty ratio. The circuit finds out the factor which influences the dimming compatibility of a number of lamps which are connected in parallel, and improves the dimming stability of linkage lamp tubes.
Description
Technical field
The utility model belongs to the lighting electronic technical field, relates to a kind of LED lamp thyristor regulating light drive circuit.
Background technology
Nowadays, the LED illumination has become a mainstream technology.The LED bulb has remarkable efficiency and longer life, use high energy efficiency LED illumination instead after, the energy saving amount of realization will be very surprising.Thought the strong replacer of incandescent lamp and compact fluorescent lamp altogether by market.The major obstacle that affects at present wide-scale adoption LED bulb comes from buying expenses costliness and light modulation problem.Incandescent lamp uses simply, the forward position controllable silicon dimmer just can be realized light modulation at an easy rate cheaply.Therefore, this dimmer is seen everywhere.Solid-state illumination is replaced lamp and is wanted really to succeed, and just must be able to use existing controller and circuit to realize light modulation.There is a minimum angle of flow in the tradition controllable silicon dimmer, the light modulation angle that is about to controllable silicon dimmer to be up to turn off fully before, exchange the input waveform can not be all by cut to zero.When being the minimum angle of flow of controllable silicon, still have input power, cause the incomplete set to zero of LED lamp input current, the LED lamp can not be realized light modulation in the gamut.
For this reason, it is 201110148120.2 a kind of self-adapted to silicon-controlled dim signal circuit for generating and method that Chinese patent literature discloses application number, and this circuit comprises phase-angle detection module, inverter, filter and comparator.This circuit can produce corresponding dim signal according to the conducting phase angle signal of input signal.This invention improves traditional thyristor regulating light signal, can reduce controllable silicon at the width of dim signal corresponding to the minimum angle of flow, thereby increases dimming scope.But this invention can not well solve a plurality of luminous tube linkeds of LED lamp and light the light modulation scintillation that the poor stability of light modulation causes.
Summary of the invention
There are the problems referred to above in the utility model for existing technology, has proposed a kind of LED lamp thyristor regulating light drive circuit, and this circuit is found out the factor of the many lamps of impact light modulation compatibility in parallel, improves the stability of luminous tube linked light modulation.
The utility model is realized by following technical proposal: a kind of LED lamp thyristor regulating light drive circuit, comprise controllable silicon dimmer, it is characterized in that, this circuit also comprises the input rectifying filter unit, the output rectification filter unit, transformer, PFC control module and PWM control module, described controllable silicon dimmer connects the input rectifying filter unit, described input rectifying filter unit connects the output rectification filter unit by transformer, described PFC control module connects the output of input rectifying filter unit and the input of PWM control module, the output of described PWM control unit connects the output of output rectification filter unit, phase difference reduces between the fundamental current that described PFC control module adopts the inductance compensation mode to make to exchange input and the voltage, and described PWM control module is adjusted the duty ratio of PWM by adjusting the PWM control register according to the switching controls instruction.
PFC is the abbreviation of power factor correction, and literary fame all over Britain is power-factor corrector.The PFC control unit is applied to the condenser input type circuit, because phase difference can cause the loss of exchange power, just needs this moment pfc circuit to improve power factor between the electric current of condenser input type circuit and the voltage.PWM is that pulse modulation control circuit civilian Pulse Width Modulation all over Britain a kind ofly carries out digitally coded method to analog signal level.By the use of high-resolution counter, modulated being used for of the duty ratio of square wave encoded to the level of a physical simulation signal.Pwm signal remains numeral.Voltage or current source are that the repetition pulse sequence with a kind of conducting or disconnection is added to fictitious load and gets on.Namely being direct current supply when being added in the load in the time of logical, namely is that power supply is when being disconnected in the time of disconnected.As long as bandwidth is enough, any analogue value can use PWM to encode.The PWM control module is adjusted the duty ratio of PWM by adjusting the PWM control register according to the switching controls instruction, thereby the control charging current is adjusted brightness with this, and carries out compatibility with traditional controllable silicon dimmer.
In above-mentioned LED lamp thyristor regulating light drive circuit, in comprising, described PFC control module and PWM control module be integrated with the driving control chip of PFC control and PWM frequency modulation, the luminance input of described driving control chip is connected with the light modulation detecting unit, described driving control chip connects the output of input rectifying filter unit by the light modulation detecting unit, described light modulation detecting unit connects the PWM restriction input that drives control chip, the valley of described driving control chip is connected with the starting current output by diode and is connected in series the two ends that are connected in parallel behind the voltage stabilizing didoe with the armature winding of transformer, the voltage output end of described driving control chip is by the auxiliary winding of resistance connection transformer, and the voltage output end of described driving control chip also is connected with by the power supply generation unit that is connected in series diode D7 and resistance R 5 behind the voltage stabilizing didoe D8 shunt capacitance C6.
Give the silicon controlled dimmer for light control instruction, controllable silicon dimmer carries out forward position light modulation adjusting electric current and enters the input rectifying filter unit, and simultaneously light modulation detecting unit detects the filtered electric current of input rectifying, voltage, carries out dividing potential drop and finely tunes simultaneously earial drainage.Realize PFC control, drive simultaneously control chip is adjusted PWM by adjusting the PWM control register duty ratio, realize PWM frequency modulation, thereby the control charging current is adjusted brightness with this, and carry out compatibility with traditional controllable silicon dimmer.This PWM and PFC control all realize by driving the control chip internal integrated circuit, only need to connect specific port and just can realize.Make circuit simpler, conveniently be arranged in LED lamp socket or the power supply.
In above-mentioned LED lamp thyristor regulating light drive circuit, the frequency setting end of described driving control chip and frequency minimizing are set between the end and are connected with oscillating circuit.Here oscillating circuit provides frequency setting for the driving control chip.
In above-mentioned LED lamp thyristor regulating light drive circuit, the overcurrent protection end of described driving control chip is connected with leakage unit, and described leakage unit comprises three resistance that mutually are in turn connected to form the loop.The leakage unit is here regulated the interlock of LED lamp with many lamps phenomenon very large effect, can guarantee LED lamp steady operation in several wide dimming scopes.
In above-mentioned LED lamp thyristor regulating light drive circuit, described light modulation detecting unit comprises resistance R 15, resistance R 16, resistance R 17 and capacitor C 8, described capacitor C 8 is connected in parallel in the two ends of resistance R 17, described resistance R 1 one termination ground wires, one end of other end contact resistance R15 and resistance R 16, the other end of resistance R 15 connect input rectifying filter unit output and drive control chip a little less than the switch terminals of releasing, the other end of described resistance R 16 connects the luminance input that drives control chip.Divider resistance after the rectifier bridge is the effect of releasing a little less than resistance R 15, resistance R 16, resistance R 17 generations similarly, can make dimming effect better simultaneously.
In above-mentioned LED lamp thyristor regulating light drive circuit, described resistance R 15, resistance R 16, resistance R 17 are greater than 1M Ω.Here so that light modulation reaches best.
In above-mentioned LED lamp thyristor regulating light drive circuit, be integrated with overload, overcurrent and overvoltage circuit in the described driving control chip.Need not to connect in addition protective circuit, reduce the area occupied of LED lamp thyristor regulating light drive circuit, be convenient to simultaneously use and install.
In above-mentioned LED lamp thyristor regulating light drive circuit, described driving control chip is the SSL210X chip.The SSL210X chip contains the PWM control of comparative maturity and PFC controls and peripheral circuit is few, can well realize the light modulation of LED lamp.
Compared with prior art, this LED lamp thyristor regulating light drive circuit is found out the factor of the many lamps of impact light modulation compatibility in parallel, has solved the problem that easily occurs flicker in the many lamp interlocks of the LED lamp light modulation process, improves the stability of luminous tube linked light modulation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, this LED lamp thyristor regulating light drive circuit comprises controllable silicon dimmer, and this circuit also comprises input rectifying filter unit, output rectification filter unit, transformer TX1, PFC control module and PWM control module.Controllable silicon dimmer connects the input rectifying filter unit, the input rectifying filter unit connects the output rectification filter unit by transformer, the PFC control module connects the output of input rectifying filter unit and the input of PWM control module, the output of PWM control unit connects the output of output rectification filter unit, phase difference reduces between the fundamental current that the PFC control module adopts the inductance compensation mode to make to exchange input and the voltage, and the PWM control module is adjusted the duty ratio of PWM by adjusting the PWM control register according to the switching controls instruction.
Wherein the input rectifying filter unit comprises full-bridge rectifier D1 among the figure, the capacitor C 1 that is connected in parallel between two inputs of full-bridge rectifier D1, and be connected with resistance R 1.The output of full-bridge rectifier D1 is connected in series with resistance R 4 and inductance L 1, and the resistance R 4 and the inductance L 1 that are connected in series play filtering in circuit.Wherein output rectifier and filter comprises diode D6, capacitor C 5, capacitor C 9 and the inductance L 3 of connection transformer TX1 secondary winding positive pole, the negative pole of diode D6 connects an end of capacitor C 5, capacitor C 5 other ends connect respectively an end and the transformer TX1 secondary winding negative pole of capacitor C 9, capacitor C 9 other end earth connections, an end of inductance L 3 connects the negative pole of diode D6 simultaneously, the other end of inductance L 3 is connected load with transformer TX1 secondary winding negative pole, and load is the LED illuminating lamp tube.
Under the optimization model between dimmer and input rectifying filter unit contact resistance R1, capacitor C 1 is connected in parallel between the diode forward of full-bridge rectifier and two nodes oppositely having a common boundary simultaneously, select 80 Ω-150 Ω through testing here resistance R 1, capacitor C 1 flash of light do not occur for 2.2nF-4.7nF scope the best, resistance R 1 can't be compatible with controllable silicon dimmer during less than 80 Ω, and flash of light easily appears during greater than 150 Ω in R1.Here select capacitor C 1 during for 2.2nF optimal resistance R1 be 80 Ω, capacitor C 1 during for 4.7nF optimal resistance R1 be 100 Ω.
PFC is the abbreviation of power factor correction, and literary fame all over Britain is power-factor corrector.The PFC control unit is applied to the condenser input type circuit, because phase difference can cause the loss of exchange power, just needs this moment pfc circuit to improve power factor between the electric current of condenser input type circuit and the voltage.PWM is that pulse modulation control circuit civilian Pulse Width Modulation all over Britain a kind ofly carries out digitally coded method to analog signal level.By the use of high-resolution counter, modulated being used for of the duty ratio of square wave encoded to the level of a physical simulation signal.Pwm signal remains numeral.Voltage or current source are that the repetition pulse sequence with a kind of conducting or disconnection is added to fictitious load and gets on.Namely being direct current supply when being added in the load in the time of logical, namely is that power supply is when being disconnected in the time of disconnected.As long as bandwidth is enough, any analogue value can use PWM to encode.The PWM control module is adjusted the duty ratio of PWM by adjusting the PWM control register according to the switching controls instruction, thereby the control charging current is adjusted brightness with this, and carries out compatibility with traditional controllable silicon dimmer.
In comprising, PFC control module and PWM control module be integrated with the driving control chip of PFC control and PWM frequency modulation, the luminance input that drives control chip is connected with the light modulation detecting unit, drive control chip connects the input rectifying filter unit by the light modulation detecting unit output, the light modulation detecting unit connects the PWM restriction input 9 that drives control chip, the valley that drives control chip is connected with the starting current output to connect by diode D5 and is connected in series the two ends that are connected in parallel behind the voltage stabilizing didoe D4 with the armature winding of transformer TX1, drive the voltage output end 11 of control chip by the auxiliary winding of the TX1 of resistance connection transformer, the voltage output end 11 that drives control chip also is connected with by the power supply generation unit that is connected in series diode D7 and resistance R 5 behind the voltage stabilizing didoe D8 shunt capacitance C6.Drive in the control chip and be integrated with overload, overcurrent and overvoltage circuit.Drive this implementation column of control chip and select the SSL210X chip.Also can select the IW3610 chip to realize.Drive on the control chip PWM restriction input and be connected with divider resistance, the divider resistance of this PWM restriction input is that resistance R 17 is selected 1M Ω, and divider resistance is resistance R 16 on the driving control chip luminance input, and resistance R 16 is selected the Ω greater than 1M.
The frequency setting end 7 of driving control chip and frequency minimizing are set between the end 8 and are connected with oscillating circuit.Oscillating circuit comprises resistance R 9, resistance R 8 and capacitor C 7, one end of resistance R 9 connects driving control chip frequency setting end 7, the other end of resistance R 9 connects capacitor C 7 one ends, the other end of capacitor C 7 connects ground wire, the capacitor C 7 two ends resistance R 8 that is connected in parallel is different from resistance R 8 other end rate of connections that connect ground terminal and reduces and set end 8.
The overcurrent protection end 10 that drives control chip is connected with leakage unit; leakage unit comprises three resistance that mutually are in turn connected to form the loop; be respectively resistance R 13, resistance R 14 and resistance R 12; the end that resistance R 13 is connected with resistance R connects respectively driving control chip overcurrent protection end 10; the two ends of the other end contact resistance R12 of while resistance R 13 and resistance R 14, resistance R 12 is total to ground wire with resistance R 13 links.Resistance R 13, resistance R 14 and resistance R 12 are let out resistance a little less than being, resistance R 13, resistance R 14 and resistance R 12 are selected greater than 1M Ω dimming effect best.
The light modulation detecting unit comprises resistance R 15, resistance R 16, resistance R 17 and capacitor C 8, described capacitor C 8 is connected in parallel in the two ends of resistance R 17, described resistance R 1 one termination ground wires, one end of other end contact resistance R15 and resistance R 16, the other end of resistance R 15 connects the input rectifying filter unit, drive control chip a little less than release switch terminals 1 and a little less than the switch terminals 2 of releasing, the other end of described resistance R 16 connects the luminance input 6 that drives control chip.Resistance R 16 is greater than 1M Ω, and resistance R 15 and resistance R 17 are that 1M Ω dimming effect is best.
Drive the control chip port among the figure and also comprise power input 3, grounding terminal 4, ground terminal 5, ground terminal 15, ground terminal 14, ground terminal 13, internal power switch end 12.Give the power input input power, all the other ground terminal earth connections, the internal electric source beginning 12 connects ground wire by resistance R 7.Output at full-bridge rectifier also is connected with voltage stabilizing didoe D2 simultaneously, and voltage stabilizing didoe D2 plays the effect of overload and overvoltage protection here.Between input rectifying filter unit and primary winding, be connected with inductance L 3, capacitor C 3 and capacitor C 4, inductance L 3 one ends connect an end of capacitor C 3 and the negative pole of diode D3, the other end of inductance L 3 connects an end of capacitor C 4 and the positive pole of voltage stabilizing didoe D4, and the other end of the other end of capacitor C 4 and capacitor C 3 is earth connection respectively.Here increase inductance L 3, capacitor C 3 and capacitor C 4 and mainly play the power supply buffering.
PFC is the abbreviation of power factor correction, and literary fame all over Britain is power-factor corrector.
The PFC control unit is applied to the condenser input type circuit, because phase difference can cause the loss of exchange power, just needs this moment pfc circuit to improve power factor between the electric current of condenser input type circuit and the voltage.PWM is that pulse modulation control circuit civilian Pulse Width Modulation all over Britain a kind ofly carries out digitally coded method to analog signal level.By the use of high-resolution counter, modulated being used for of the duty ratio of square wave encoded to the level of a physical simulation signal.Pwm signal remains numeral, because in given any moment, and the direct current supply of full amplitude or have fully, or complete nothing.Voltage or current source are that the repetition pulse sequence with a kind of on-off is added to fictitious load and gets on.Namely being direct current supply when being added in the load in the time of logical, namely is that power supply is when being disconnected in the time of disconnected.As long as bandwidth is enough, any analogue value can use PWM to encode.
Below be the operation principle of the utility model LED lamp thyristor regulating light drive circuit:
The LED lamp that is used for the replacement standard incandescent lamp comprises a LED fluorescent tube array usually, guarantees to provide uniform illumination.These LED fluorescent tubes link together with series system.The brightness of each LED fluorescent tube determines by its electric current, and the forward drop of LED fluorescent tube is about 3.4V, usually between 2.8V between the 4.2V.The LED lamp string of single led fluorescent tube array composition should provide driving by constant-current supply again, must strictly control electric current, to guarantee having high matching degree between the adjacent LED lamp.
LED lamp string wants to realize tunable optical, and its out-put supply must be able to be analyzed the variable phase angle output of controllable silicon dimmer, in order to the constant-current supply that flows to LED lamp string is carried out unidirectional adjustment.When keeping the dimmer normal operation, accomplish that this point is very difficult, tend to cause performance not good.It is slow that problem can show as toggle speed, and flicker, uneven illumination are even, or occur the problem such as flicker when adjusting brightness.These negative condition are normally by false triggering or turn-off too early that the factors such as controllable silicon and LED Current Control be improper cause jointly.The basic reason of false triggering is to have occurred current oscillation when controlled silicon conducting.
By giving the silicon controlled dimmer for light control instruction, controllable silicon dimmer carries out forward position light modulation adjusting electric current and enters the input rectifying filter unit, this LED lamp thyristor regulating light drive circuit detects the variable phase angle of controllable silicon dimmer output voltage by LED driving governor connection light modulation detecting unit, drive simultaneously control chip PFC control on one side and be used for the output power factor correction.The light modulation detecting unit detects the filtered electric current of input rectifying, voltage, carries out dividing potential drop and finely tunes simultaneously earial drainage.Realize PFC control, carry out simultaneously PWM control on one side, drive control chip and analyze the variable phase angle of exporting behind the silicon controlled dimmer for light control is adjusted PWM by adjusting the PWM control register duty ratio, realize PWM frequency modulation, thereby control charging current, adjust the brightness of LED lamp with this, and carry out compatibility with traditional controllable silicon dimmer.This PWM and PFC control all realize by driving the control chip internal integrated circuit.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (8)
1. LED lamp thyristor regulating light drive circuit, comprise controllable silicon dimmer, it is characterized in that, this circuit also comprises the input rectifying filter unit, the output rectification filter unit, transformer, PFC control module and PWM control module, described controllable silicon dimmer connects the input rectifying filter unit, described input rectifying filter unit connects the output rectification filter unit by transformer, described PFC control module connects the output of input rectifying filter unit and the input of PWM control module, the output of described PWM control unit connects the output of output rectification filter unit, phase difference reduces between the fundamental current that described PFC control module adopts the inductance compensation mode to make to exchange input and the voltage, and described PWM control module is adjusted the duty ratio of PWM by adjusting the PWM control register according to the switching controls instruction.
2. LED lamp thyristor regulating light drive circuit according to claim 1, it is characterized in that, in comprising, described PFC control module and PWM control module be integrated with the driving control chip of PFC control and PWM frequency modulation, the luminance input of described driving control chip is connected with the light modulation detecting unit, described driving control chip connects the output of input rectifying filter unit by the light modulation detecting unit, described light modulation detecting unit connects the PWM restriction input that drives control chip, the valley of described driving control chip is connected with the starting current output by diode and is connected in series the two ends that are connected in parallel behind the voltage stabilizing didoe with the armature winding of transformer, the voltage output end of described driving control chip is by the auxiliary winding of resistance connection transformer, and the voltage output end of described driving control chip also is connected with by the power supply generation unit that is connected in series diode D7 and resistance R 5 behind the voltage stabilizing didoe D8 shunt capacitance C6.
3. LED lamp thyristor regulating light drive circuit according to claim 2 is characterized in that, the frequency setting end of described driving control chip and frequency minimizing are set between the end and be connected with oscillating circuit.
4. according to claim 2 or 3 described LED lamp thyristor regulating light drive circuits, it is characterized in that, the overcurrent protection end of described driving control chip is connected with leakage unit, and described leakage unit comprises three resistance that mutually are in turn connected to form the loop.
5. LED lamp thyristor regulating light drive circuit according to claim 4, it is characterized in that, described light modulation detecting unit comprises resistance R 15, resistance R 16, resistance R 17 and capacitor C 8, described capacitor C 8 is connected in parallel in the two ends of resistance R 17, described resistance R 1 one termination ground wires, one end of other end contact resistance R15 and resistance R 16, the other end of resistance R 15 connect input rectifying filter unit output and drive control chip a little less than the switch terminals of releasing, the other end of described resistance R 16 connects the luminance input that drives control chip.
6. LED lamp thyristor regulating light drive circuit according to claim 5 is characterized in that, described resistance R 15, resistance R 16, resistance R 17 are greater than 1M Ω.
7. LED lamp thyristor regulating light drive circuit according to claim 6 is characterized in that, is integrated with overload, overcurrent and overvoltage circuit in the described driving control chip.
8. LED lamp thyristor regulating light drive circuit according to claim 7 is characterized in that, described driving control chip is the SSL210X chip.
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| CN 201320236184 CN203251474U (en) | 2013-05-03 | 2013-05-03 | LED lamp controllable silicon dimming drive circuit |
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| CN 201320236184 CN203251474U (en) | 2013-05-03 | 2013-05-03 | LED lamp controllable silicon dimming drive circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104010418A (en) * | 2014-06-03 | 2014-08-27 | 厦门市东林电子有限公司 | Low-cost separated component dimming circuit of LED light source |
| CN106304502A (en) * | 2016-09-28 | 2017-01-04 | 东莞铭普光磁股份有限公司 | The power control circuit of a kind of illuminator and system |
| CN107231725A (en) * | 2017-06-19 | 2017-10-03 | 中山市大源灯饰有限公司 | A kind of integral type integrated LED lamp plate |
| CN109936889A (en) * | 2017-12-15 | 2019-06-25 | 松下知识产权经营株式会社 | Dimming driving circuit and the lighting device for using the dimming driving circuit |
| CN110972382A (en) * | 2019-12-26 | 2020-04-07 | 珠海世讯科技有限公司 | Phase dimming circuit and method |
| CN111511079A (en) * | 2020-03-30 | 2020-08-07 | 浙江凯耀照明有限责任公司 | Non-stroboscopic dimming driver utilizing input valley bottom compensation |
| CN112205078A (en) * | 2018-05-28 | 2021-01-08 | 侯经权 | Universal light modulator |
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2013
- 2013-05-03 CN CN 201320236184 patent/CN203251474U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104010418A (en) * | 2014-06-03 | 2014-08-27 | 厦门市东林电子有限公司 | Low-cost separated component dimming circuit of LED light source |
| CN106304502A (en) * | 2016-09-28 | 2017-01-04 | 东莞铭普光磁股份有限公司 | The power control circuit of a kind of illuminator and system |
| CN107231725A (en) * | 2017-06-19 | 2017-10-03 | 中山市大源灯饰有限公司 | A kind of integral type integrated LED lamp plate |
| CN107231725B (en) * | 2017-06-19 | 2023-12-01 | 国网浙江省电力有限公司台州供电公司 | Integrated LED lamp plate of integral type |
| CN109936889A (en) * | 2017-12-15 | 2019-06-25 | 松下知识产权经营株式会社 | Dimming driving circuit and the lighting device for using the dimming driving circuit |
| CN112205078A (en) * | 2018-05-28 | 2021-01-08 | 侯经权 | Universal light modulator |
| CN112205078B (en) * | 2018-05-28 | 2024-01-26 | 侯经权 | Universal dimmer |
| CN110972382A (en) * | 2019-12-26 | 2020-04-07 | 珠海世讯科技有限公司 | Phase dimming circuit and method |
| CN110972382B (en) * | 2019-12-26 | 2023-05-30 | 珠海世讯科技有限公司 | Phase dimming circuit and method |
| CN111511079A (en) * | 2020-03-30 | 2020-08-07 | 浙江凯耀照明有限责任公司 | Non-stroboscopic dimming driver utilizing input valley bottom compensation |
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Assignee: Taizhou JiaoGuang Lighting Co.,Ltd. Assignor: Zhu Jianrong Contract record no.: 2015330000044 Denomination of utility model: LED lamp controllable silicon dimming drive circuit Granted publication date: 20131023 License type: Exclusive License Record date: 20150323 |
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