CN104853507A - Bootstrap control LED driving system based on capacitance feedback three-point type oscillation circuit - Google Patents
Bootstrap control LED driving system based on capacitance feedback three-point type oscillation circuit Download PDFInfo
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- CN104853507A CN104853507A CN201510307152.0A CN201510307152A CN104853507A CN 104853507 A CN104853507 A CN 104853507A CN 201510307152 A CN201510307152 A CN 201510307152A CN 104853507 A CN104853507 A CN 104853507A
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Abstract
The invention discloses a bootstrap control LED driving system based on a capacitance feedback three-point type oscillation circuit. The system comprises a rectification filtering circuit, a driving circuit connected with the output end of the rectification filtering circuit, a bootstrap circuit connected with the driving circuit, and a phase shift processing circuit connected with the bootstrap circuit, and is characterized in that the capacitance feedback three-point type oscillation circuit is also arranged between the driving circuit and the phase shift processing circuit. According to the invention, the capacitance feedback three-point type oscillation circuit is arranged in the system, an LED can be driven more stably, and a scintillation phenomenon is prevented when the LED works.
Description
Technical field
The present invention relates to a kind of drive system, specifically refer to that a kind of bootstrapping based on capacitive feedback bikini oscillating circuit controls LED drive system.
Background technology
LED, as novel energy-conserving light source, with its environmental protection, the feature such as energy-conservation, the life-span is long, volume is little, is extensively received by people and adopts.Due to the semiconductor device that LED is characteristic sensitivity, have negative temperature characteristic again, therefore in application process, LED drive circuit plays considerable effect for impelling LED to be in stable, reliable operating state.
Along with people's living standard constantly improves, the illuminating effect of people to LED is proposed higher requirement no matter at home or in shop.But its driving frequency of traditional LED drive system that current people adopt is unstable, LED is easily caused to occur the phenomenon of flicker.
Summary of the invention
The object of the invention is to the defect overcoming its driving frequency instability of traditional LED drive system, provide a kind of bootstrapping based on capacitive feedback bikini oscillating circuit to control LED drive system.
Object of the present invention is achieved through the following technical solutions: the bootstrapping based on capacitive feedback bikini oscillating circuit controls LED drive system, it comprises current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, the boostrap circuit be connected with drive circuit, the phase shift treatment circuit be connected with boostrap circuit, and be arranged on the capacitive feedback bikini oscillating circuit between drive circuit and phase shift treatment circuit.
Further, described capacitive feedback bikini oscillating circuit is by triode VT4, triode VT5, N pole is connected with the collector electrode of triode VT4, the diode D4 that P pole is then connected with drive circuit, one end is connected with the P pole of diode D4, the resistance R15 that the other end is then connected with the base stage of triode VT4, positive pole is connected with the collector electrode of triode VT5 after oscillator X1, the polar capacitor C13 of minus earth, one end is connected with the emitter of triode VT4, the resistance R16 that the other end is then connected with the negative pole of polar capacitor C13 after resistance R17, positive pole is connected with the emitter of triode VT4, the polar capacitor C12 that negative pole is then connected with the collector electrode of triode VT5, the controllable impedance L1 be in parallel with polar capacitor C12, N pole is connected with the emitter of triode VT4, the diode D5 that P pole is then connected with the negative pole of polar capacitor C13 after resistance R18, and positive pole is connected with the emitter of triode VT5, the polar capacitor C14 that negative pole is then connected with the negative pole of polar capacitor C13 forms, connect 15V voltage while the emitter of described triode VT4 is connected with phase shift treatment circuit, its collector electrode is then connected with the tie point of resistance R17 with resistance R16, the base stage of described triode VT5 is then connected with the collector electrode of triode VT4, its emitter is then connected with the P pole of diode D5.
Described phase shift treatment circuit is by phase shift chip U2, triode VT2, triode VT3, one end is connected with the VCC+ pin of phase shift chip U2, the resistance R12 that the other end is connected with the IN1 pin of phase shift chip U2, negative pole is connected with the IN1 pin of phase shift chip U2 after resistance R11, the polar capacitor C9 that positive pole is connected with the IN2 pin of phase shift chip U2, positive pole is connected with the NC pin of phase shift chip U2 after resistance R13, the polar capacitor C11 that negative pole is connected with the collector electrode of triode VT2, positive pole is connected with the OUT pin of phase shift chip U2, the polar capacitor C10 of minus earth, one end is connected with the OUT pin of phase shift chip U2, the potentiometer R14 that the other end is connected with the collector electrode of triode VT3, P pole is connected with the OFF1 pin of phase shift chip U2, the diode D3 that N pole is connected with the base stage of triode VT2, and P pole is connected with the OFF2 pin of phase shift chip U2, the diode D2 that N pole is connected with the emitter of triode VT3 forms, the IN1 pin of described phase shift chip U2 is connected with boostrap circuit, VCC-pin is connected with the emitter of triode VT4, OUT pin is connected with the sliding end of potentiometer R14, the emitter of triode VT2 is connected with the base stage of triode VT3, the collector and emitter of triode VT3 is together then as the output of system, and the negative pole of polar capacitor C9 is connected with boostrap circuit.
Described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, polar capacitor C1 form; The input that fuse FU is serially connected in diode bridge rectifier U is extremely gone up, another input that resistance R1 is then serially connected in diode bridge rectifier U is extremely gone up, between the cathode output end that the positive and negative electrode of polar capacitor C1 is then serially connected in diode bridge rectifier U and cathode output end, the positive pole of polar capacitor C1 is also connected with drive circuit with negative pole.
Described drive circuit is by driving chip U1, diode D1, one end is connected with the SD pin of driving chip U1, the polar capacitor C2 that the other end is connected with the negative pole of polar capacitor C1, one end is connected with the VSS pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the LO pin of driving chip U1, the resistance R5 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the LIN pin of driving chip U1, the resistance R2 of other end ground connection, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the VDD pin of driving chip U1 after polar capacitor C3, and form with the polar capacitor C4 that resistance R4 is in parallel, the N pole of described diode D1 is simultaneously with the positive pole of polar capacitor C1 and boostrap circuit is connected, its P pole is then connected with VB pin with the HO pin of driving chip U1 simultaneously, the HIN pin of driving chip U1 is connected with its SD pin, and COM pin is then connected with boostrap circuit, the negative pole of described polar capacitor C2 is also connected with the P pole of diode D4.
Described boostrap circuit is by triode VT1, field effect transistor Q, one end is connected with the N pole of diode D1 and the IN1 pin of phase shift chip U2 simultaneously, the resistance R10 that the other end is then connected with the collector electrode of triode VT1, positive pole is connected with the emitter of triode VT1, the polar capacitor C8 that negative pole is then connected with the negative pole of polar capacitor C9, positive pole is connected with the source electrode of field effect transistor Q, the polar capacitor C7 that negative pole is connected with the negative pole of polar capacitor C8, one end is connected with the base stage of triode VT1, the resistance R6 of other end ground connection after resistance R8, positive pole is connected with the tie point of resistance R8 with resistance R6, the polar capacitor C6 of negative pole ground connection after resistance R9, positive pole is connected with the COM pin of driving chip U1, the polar capacitor C5 that negative pole is then connected with the grid of field effect transistor Q, and one end is connected with the negative pole of polar capacitor C5, the resistance R7 that the other end is then connected with the positive pole of polar capacitor C6 forms, the drain electrode of described field effect transistor Q is connected with the base stage of triode VT1, and its source electrode is connected with the negative pole of polar capacitor C6.
In order to reach better result of use, described phase shift chip U2 is preferably LM741 integrated chip, and described driving chip U1 is then preferably IR2110 integrated chip and realizes.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention adopts phase shift treatment circuit, and it can also ensure good stability LED drive system exports powerful while.
(2) the present invention adopts LM741 integrated chip, and stability is high, low price.
(3) the present invention is provided with boostrap circuit, and it effectively can promote the load capacity of drive system, thus can drive more LED group, to meet the demand of people simultaneously.
(4) the present invention is provided with capacitive feedback bikini oscillating circuit, its can the present invention can be more stable LED is driven, thus LED is worked the phenomenon of the existing flicker of turnover.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention includes current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, the boostrap circuit be connected with drive circuit, the phase shift treatment circuit be connected with boostrap circuit, and be arranged on the capacitive feedback bikini oscillating circuit between drive circuit and phase shift treatment circuit.
Wherein, described phase shift treatment circuit is by phase shift chip U2, triode VT2, triode VT3, one end is connected with the VCC+ pin of phase shift chip U2, the resistance R12 that the other end is connected with the IN1 pin of phase shift chip U2, negative pole is connected with the IN1 pin of phase shift chip U2 after resistance R11, the polar capacitor C9 that positive pole is connected with the IN2 pin of phase shift chip U2, positive pole is connected with the NC pin of phase shift chip U2 after resistance R13, the polar capacitor C11 that negative pole is connected with the collector electrode of triode VT2, positive pole is connected with the OUT pin of phase shift chip U2, the polar capacitor C10 of minus earth, one end is connected with the OUT pin of phase shift chip U2, the potentiometer R14 that the other end is connected with the collector electrode of triode VT3, P pole is connected with the OFF1 pin of phase shift chip U2, the diode D3 that N pole is connected with the base stage of triode VT2, and P pole is connected with the OFF2 pin of phase shift chip U2, the diode D2 that N pole is connected with the emitter of triode VT3 forms.
During connection, the IN1 pin of this phase shift chip U2 is connected with boostrap circuit, and its VCC-pin is then connected with capacitive feedback bikini oscillating circuit, its OUT pin is connected with the sliding end of potentiometer R14.The emitter of triode VT2 is connected with the base stage of triode VT3, and the collector and emitter of triode VT3 is together then as the output of system, and the negative pole of polar capacitor C9 is connected with boostrap circuit.Phase shift treatment circuit, can also ensure good stability LED drive system exports powerful while.In order to ensure implementation result, described phase shift chip U2 is preferably LM741 integrated chip to realize.
Described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, polar capacitor C1 form.During connection, the input that this fuse FU is serially connected in diode bridge rectifier U is extremely gone up, and when overtension, this fuse FU then can fuse, and the present invention so then can be avoided to damage because of overtension.In addition, another input that resistance R1 is then serially connected in diode bridge rectifier U is extremely gone up.Between the cathode output end that the positive and negative electrode of polar capacitor C1 is then serially connected in diode bridge rectifier U and cathode output end, the positive pole of polar capacitor C1 is also connected with drive circuit with negative pole, and this polar capacitor C1 can to row filtering process during voltage.
Described drive circuit provides driving effect for system, it is by driving chip U1, diode D1, one end is connected with the SD pin of driving chip U1, the polar capacitor C2 that the other end is connected with the negative pole of polar capacitor C1, one end is connected with the VSS pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the LO pin of driving chip U1, the resistance R5 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the LIN pin of driving chip U1, the resistance R2 of other end ground connection, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the VDD pin of driving chip U1 after polar capacitor C3, and form with the polar capacitor C4 that resistance R4 is in parallel.
Better drive effect to reach, the N pole of this diode D1 needs simultaneously with the positive pole of polar capacitor C1 and boostrap circuit is connected, its P pole is then connected with VB pin with the HO pin of driving chip U1 simultaneously.The HIN pin of driving chip U1 is connected with its SD pin, and COM pin is then connected with boostrap circuit.Meanwhile, the negative pole of this polar capacitor C2 also needs to be connected with capacitive feedback bikini oscillating circuit.This driving chip U1 preferentially adopts IR2110 integrated chip to realize, and can improve actuating speed of the present invention like this.
Described boostrap circuit can improve the load capacity of LED drive system, it comprises triode VT1, field effect transistor Q, with the N pole of diode D1 and the resistance R10 that IN1 pin is connected, the other end is then connected with the collector electrode of triode VT1 of phase shift chip U2 while of one end, the polar capacitor C8 that positive pole is connected with the emitter of triode VT1, negative pole is then connected with the negative pole of polar capacitor C9, the polar capacitor C7 that positive pole is connected with the source electrode of field effect transistor Q, negative pole is connected with the negative pole of polar capacitor C8.
Simultaneously, this boostrap circuit also comprises that one end is connected with the base stage of triode VT1, the resistance R6 of other end ground connection after resistance R8, positive pole is connected with the tie point of resistance R8 with resistance R6, the polar capacitor C6 of negative pole ground connection after resistance R9, the polar capacitor C5 that positive pole is connected with the COM pin of driving chip U1, negative pole is then connected with the grid of field effect transistor Q, and the resistance R7 that one end is connected with the negative pole of polar capacitor C5, the other end is then connected with the positive pole of polar capacitor C6.The drain electrode of described field effect transistor Q is connected with the base stage of triode VT1, and source electrode is connected with the negative pole of polar capacitor C6.
This capacitive feedback bikini oscillating circuit comprises triode VT4, triode VT5, N pole is connected with the collector electrode of triode VT4, the diode D4 that P pole is then connected with drive circuit, one end is connected with the P pole of diode D4, the resistance R15 that the other end is then connected with the base stage of triode VT4, positive pole is connected with the collector electrode of triode VT5 after oscillator X1, the polar capacitor C13 of minus earth, one end is connected with the emitter of triode VT4, the resistance R16 that the other end is then connected with the negative pole of polar capacitor C13 after resistance R17, positive pole is connected with the emitter of triode VT4, the polar capacitor C12 that negative pole is then connected with the collector electrode of triode VT5, the controllable impedance L1 be in parallel with polar capacitor C12.This polar capacitor C12 forms LC loop together with controllable impedance L1, and the oscillation intensity of this oscillator X1 is controlled by this LC loop, then can regulate the oscillation intensity of oscillator X1 when regulating controllable impedance L1.
Simultaneously, this capacitive feedback bikini oscillating circuit also includes the diode D5 that N pole is connected with the emitter of triode VT4, P pole is then connected with the negative pole of polar capacitor C13 after resistance R18, and the polar capacitor C14 that positive pole is connected with the emitter of triode VT5, negative pole is then connected with the negative pole of polar capacitor C13.
In order to make frequency of oscillation more stable, connect 15V voltage while the emitter of described triode VT4 need be connected with phase shift treatment circuit, its collector electrode is then connected with the tie point of resistance R17 with resistance R16.The base stage of described triode VT5 is then connected with the collector electrode of triode VT4, its emitter is then connected with the P pole of diode D5.
Wherein, resistance R15 is divider resistance, and it can carry out overvoltage protection to circuit.This triode VT5 is parallel resonance state, and its resonance characteristic then can make oscillator X1 have stable operating frequency.Resistance R16 and resistance R17 and resistance R18 is then biasing resistor, and the bias current of its adjustable triode VT5 base stage, makes it meet job requirement.
As mentioned above, just the present invention can well be realized.
Claims (7)
1. the bootstrapping based on capacitive feedback bikini oscillating circuit controls LED drive system, it comprises current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, the boostrap circuit be connected with drive circuit, the phase shift treatment circuit be connected with boostrap circuit, it is characterized in that, also comprise the capacitive feedback bikini oscillating circuit be arranged between drive circuit and phase shift treatment circuit, described capacitive feedback bikini oscillating circuit is by triode VT4, triode VT5, N pole is connected with the collector electrode of triode VT4, the diode D4 that P pole is then connected with drive circuit, one end is connected with the P pole of diode D4, the resistance R15 that the other end is then connected with the base stage of triode VT4, positive pole is connected with the collector electrode of triode VT5 after oscillator X1, the polar capacitor C13 of minus earth, one end is connected with the emitter of triode VT4, the resistance R16 that the other end is then connected with the negative pole of polar capacitor C13 after resistance R17, positive pole is connected with the emitter of triode VT4, the polar capacitor C12 that negative pole is then connected with the collector electrode of triode VT5, the controllable impedance L1 be in parallel with polar capacitor C12, N pole is connected with the emitter of triode VT4, the diode D5 that P pole is then connected with the negative pole of polar capacitor C13 after resistance R18, and positive pole is connected with the emitter of triode VT5, the polar capacitor C14 that negative pole is then connected with the negative pole of polar capacitor C13 forms, connect 15V voltage while the emitter of described triode VT4 is connected with phase shift treatment circuit, its collector electrode is then connected with the tie point of resistance R17 with resistance R16, the base stage of described triode VT5 is then connected with the collector electrode of triode VT4, its emitter is then connected with the P pole of diode D5.
2. the bootstrapping based on capacitive feedback bikini oscillating circuit according to claim 1 controls LED drive system, it is characterized in that: described phase shift treatment circuit is by phase shift chip U2, triode VT2, triode VT3, one end is connected with the VCC+ pin of phase shift chip U2, the resistance R12 that the other end is connected with the IN1 pin of phase shift chip U2, negative pole is connected with the IN1 pin of phase shift chip U2 after resistance R11, the polar capacitor C9 that positive pole is connected with the IN2 pin of phase shift chip U2, positive pole is connected with the NC pin of phase shift chip U2 after resistance R13, the polar capacitor C11 that negative pole is connected with the collector electrode of triode VT2, positive pole is connected with the OUT pin of phase shift chip U2, the polar capacitor C10 of minus earth, one end is connected with the OUT pin of phase shift chip U2, the potentiometer R14 that the other end is connected with the collector electrode of triode VT3, P pole is connected with the OFF1 pin of phase shift chip U2, the diode D3 that N pole is connected with the base stage of triode VT2, and P pole is connected with the OFF2 pin of phase shift chip U2, the diode D2 that N pole is connected with the emitter of triode VT3 forms, the IN1 pin of described phase shift chip U2 is connected with boostrap circuit, VCC-pin is connected with the emitter of triode VT4, OUT pin is connected with the sliding end of potentiometer R14, the emitter of triode VT2 is connected with the base stage of triode VT3, the collector and emitter of triode VT3 is together then as the output of system, and the negative pole of polar capacitor C9 is connected with boostrap circuit.
3. the bootstrapping based on capacitive feedback bikini oscillating circuit according to claim 2 controls LED drive system, it is characterized in that: described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, polar capacitor C1 form; The input that fuse FU is serially connected in diode bridge rectifier U is extremely gone up, another input that resistance R1 is then serially connected in diode bridge rectifier U is extremely gone up, between the cathode output end that the positive and negative electrode of polar capacitor C1 is then serially connected in diode bridge rectifier U and cathode output end, the positive pole of polar capacitor C1 is also connected with drive circuit with negative pole.
4. the bootstrapping based on capacitive feedback bikini oscillating circuit according to claim 3 controls LED drive system, it is characterized in that: described drive circuit is by driving chip U1, diode D1, one end is connected with the SD pin of driving chip U1, the polar capacitor C2 that the other end is connected with the negative pole of polar capacitor C1, one end is connected with the VSS pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the LO pin of driving chip U1, the resistance R5 that the other end is then connected with the negative pole of polar capacitor C1, one end is connected with the LIN pin of driving chip U1, the resistance R2 of other end ground connection, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the VDD pin of driving chip U1 after polar capacitor C3, and form with the polar capacitor C4 that resistance R4 is in parallel, the N pole of described diode D1 is simultaneously with the positive pole of polar capacitor C1 and boostrap circuit is connected, its P pole is then connected with VB pin with the HO pin of driving chip U1 simultaneously, the HIN pin of driving chip U1 is connected with its SD pin, and COM pin is then connected with boostrap circuit, the negative pole of described polar capacitor C2 is also connected with the P pole of diode D4.
5. the bootstrapping based on capacitive feedback bikini oscillating circuit according to claim 4 controls LED drive system, it is characterized in that: described boostrap circuit is by triode VT1, field effect transistor Q, one end is connected with the N pole of diode D1 and the IN1 pin of phase shift chip U2 simultaneously, the resistance R10 that the other end is then connected with the collector electrode of triode VT1, positive pole is connected with the emitter of triode VT1, the polar capacitor C8 that negative pole is then connected with the negative pole of polar capacitor C9, positive pole is connected with the source electrode of field effect transistor Q, the polar capacitor C7 that negative pole is connected with the negative pole of polar capacitor C8, one end is connected with the base stage of triode VT1, the resistance R6 of other end ground connection after resistance R8, positive pole is connected with the tie point of resistance R8 with resistance R6, the polar capacitor C6 of negative pole ground connection after resistance R9, positive pole is connected with the COM pin of driving chip U1, the polar capacitor C5 that negative pole is then connected with the grid of field effect transistor Q, and one end is connected with the negative pole of polar capacitor C5, the resistance R7 that the other end is then connected with the positive pole of polar capacitor C6 forms, the drain electrode of described field effect transistor Q is connected with the base stage of triode VT1, and its source electrode is connected with the negative pole of polar capacitor C6.
6. the bootstrapping based on capacitive feedback bikini oscillating circuit according to any one of claim 2 ~ 5 controls LED drive system, it is characterized in that: described phase shift chip U2 is LM741 integrated chip.
7. the bootstrapping based on capacitive feedback bikini oscillating circuit according to claim 5 controls LED drive system, it is characterized in that: described driving chip U1 is IR2110 integrated chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510307152.0A CN104853507A (en) | 2014-11-26 | 2015-06-06 | Bootstrap control LED driving system based on capacitance feedback three-point type oscillation circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692717.7A CN104486871A (en) | 2014-11-26 | 2014-11-26 | Bootstrap control LED (light-emitting diode) drive system based on phase shifting treatment |
| CN2014106927177 | 2014-11-26 | ||
| CN201510307152.0A CN104853507A (en) | 2014-11-26 | 2015-06-06 | Bootstrap control LED driving system based on capacitance feedback three-point type oscillation circuit |
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| CN104853507A true CN104853507A (en) | 2015-08-19 |
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| CN201410692717.7A Pending CN104486871A (en) | 2014-11-26 | 2014-11-26 | Bootstrap control LED (light-emitting diode) drive system based on phase shifting treatment |
| CN201510307152.0A Pending CN104853507A (en) | 2014-11-26 | 2015-06-06 | Bootstrap control LED driving system based on capacitance feedback three-point type oscillation circuit |
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| CN201410692717.7A Pending CN104486871A (en) | 2014-11-26 | 2014-11-26 | Bootstrap control LED (light-emitting diode) drive system based on phase shifting treatment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201986233U (en) * | 2011-03-22 | 2011-09-21 | 福建农林大学 | Phase-controlled constant-current and high-power LED (light-emitting diode) driving circuit |
| KR20110106790A (en) * | 2010-03-23 | 2011-09-29 | 샤프 가부시키가이샤 | Led drive circuit, led illumination fixture, led illumination device, and led illumination system |
| CN202857066U (en) * | 2012-09-27 | 2013-04-03 | 杭州鸿德照明科技有限公司 | Novel high-power LED isolation constant-current driving circuit composed by discrete components |
| CN203206508U (en) * | 2013-03-25 | 2013-09-18 | 福建省卓珏光电科技有限公司 | Novel LED lamp driving circuit |
| CN103379701A (en) * | 2012-04-26 | 2013-10-30 | 海洋王（东莞）照明科技有限公司 | LED driving circuit and LED lamp |
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2014
- 2014-11-26 CN CN201410692717.7A patent/CN104486871A/en active Pending
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2015
- 2015-06-06 CN CN201510307152.0A patent/CN104853507A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110106790A (en) * | 2010-03-23 | 2011-09-29 | 샤프 가부시키가이샤 | Led drive circuit, led illumination fixture, led illumination device, and led illumination system |
| CN201986233U (en) * | 2011-03-22 | 2011-09-21 | 福建农林大学 | Phase-controlled constant-current and high-power LED (light-emitting diode) driving circuit |
| CN103379701A (en) * | 2012-04-26 | 2013-10-30 | 海洋王（东莞）照明科技有限公司 | LED driving circuit and LED lamp |
| CN202857066U (en) * | 2012-09-27 | 2013-04-03 | 杭州鸿德照明科技有限公司 | Novel high-power LED isolation constant-current driving circuit composed by discrete components |
| CN203206508U (en) * | 2013-03-25 | 2013-09-18 | 福建省卓珏光电科技有限公司 | Novel LED lamp driving circuit |
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Application publication date: 20150819 |