CN106804079A - Wide input voltage phase-cut dimming circuit - Google Patents
Wide input voltage phase-cut dimming circuit Download PDFInfo
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- CN106804079A CN106804079A CN201710195121.XA CN201710195121A CN106804079A CN 106804079 A CN106804079 A CN 106804079A CN 201710195121 A CN201710195121 A CN 201710195121A CN 106804079 A CN106804079 A CN 106804079A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- 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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention is disclosed and there is provided a kind of wide input voltage phase-cut dimming circuit, and it connects and is operated in integrally adjusting light circuit, and the integrally adjusting light circuit includes the phase-cut dimmer being sequentially connected（1）, light adjusting circuit（2）, LED or LED lamp（3）, light adjusting circuit（2）Including wide input voltage phase-cut dimming circuit（21）, Switching Power Supply（22）, FET（Q2）, wide input voltage phase-cut dimming circuit（21）Including photoelectrical coupler（U1）, pwm signal change-over circuit（201）, FET（Q2）Source electrode and drain series in Switching Power Supply（22）Output negative terminal and LED or LED lamp（3）Negative terminal between, wide input voltage phase-cut dimming circuit（21）Output end connects FET（Q2）Grid.The pwm signal change-over circuit controls FET（Q2）Output, the present invention can make to be applied to whole world major part power network, be a kind of wide input voltage phase-cut dimming circuit that input voltage range is suitable between 90 305V.
Description
Technical field
The present invention relates to a kind of phase-cut dimming circuit, more particularly, to a kind of wide input voltage phase-cut dimming circuit.
Background technology
Phase-cut dimming has user installation to connect up conveniently and laid in Old building illuminating line and be transformed into and has light modulation
The advantages of LED illumination scheme of function is simple and use it is more and more.However, current phase-cut dimming power input voltage model
Enclose all narrow, the phase-cut dimming power input voltage scope for being for example applicable the area such as China, Europe, Australia is all in 170-
In 265V, it is adaptable to which the phase-cut dimming power input voltage scope in the area such as North America, Japan is all in the range of 90-130V, to lack
A kind of phase-cut dimming power supply of few input voltage range suitable for global major part power network in 90-305V.
The content of the invention
It is to be solved by this invention to ask that it is to overcome the deficiencies in the prior art to carry, there is provided one kind can make to be applied to whole world major part
Power network, input voltage range are suitable between 90-305V, and suitable for the phase-cut dimming power supply electricity of preceding cut and rear cut
Road.
The technical scheme is that：A kind of wide input voltage phase-cut dimming circuit, it connects and is operated in integrally adjusting light
In circuit, the integrally adjusting light circuit includes the phase-cut dimmer, light adjusting circuit, LED or the LED lamp that are sequentially connected, described
The input connection power supply phase line L of phase-cut dimmer, the light adjusting circuit includes wide input voltage phase-cut dimming circuit, switch electricity
Source, FET, one end of the output end connection wide input voltage phase-cut dimming circuit input end of the phase-cut dimmer,
One end of the Switching Power Supply input, the other end of the wide input voltage phase-cut dimming circuit input end, switch electricity
The other end connection zero-power line N of source input, the Switching Power Supply output plus terminal and the LED or the anode of LED lamp
Connection, the source electrode and drain series of the FET are in Switching Power Supply output negative terminal and the LED or LED lamp
Between negative terminal, the wide input voltage phase-cut dimming circuit output end connects the grid of the FET.
The wide input voltage phase-cut dimming circuit includes diode I, diode II, resistance I, resistance II, resistance III, electricity
Resistance IV, transistor, photoelectrical coupler, pwm signal change-over circuit, the diode I, the positive pole of diode II connect power supply respectively
Phase line L, zero line N, the diode I, the negative pole of diode II are connected and connect one end of the resistance I, the resistance I
The other end connect one end, the base stage of the transistor of the resistance II, the other end of the resistance II connects the crystal
Altogether, the colelctor electrode of the transistor is connected in one end, the photoelectrical coupler of the resistance III emitter stage and circuit of pipe
The negative pole connection end of luminous tube, the other end of the resistance III connect luminous tube in the photoelectrical coupler anode connection terminal,
One end of the resistance IV, the other end connection power supply VCC of the resistance IV, the control output end connection of the photoelectrical coupler
The input of the pwm signal change-over circuit, the output end of the pwm signal change-over circuit connects the grid of the FET
Pole.
The pwm signal change-over circuit including pwm signal can turn DC signal circuit and DC signal turns PWM letters
Number circuit, can also be MCU signaling conversion circuits.
The beneficial effects of the invention are as follows：Because the present invention includes diode I, diode II, resistance I, resistance II, resistance
IIIth, resistance IV, transistor, photoelectrical coupler, pwm signal change-over circuit, the diode I, the positive pole of diode II connect respectively
Meet phase line L, the zero line N of power supply, the diode I, the negative pole of diode II are connected and connect one end of the resistance I, institute
The other end for stating resistance I connects one end, the base stage of the transistor of the resistance II, the other end connection institute of the resistance II
State the emitter stage and circuit of transistor altogether, the colelctor electrode of the transistor connects one end, the smooth thermocouple of the resistance III
The negative pole connection end of luminous tube in clutch, the other end of the resistance III connects the positive pole company of luminous tube in the photoelectrical coupler
Connect end, one end of the resistance IV, the other end connection power supply VCC of the resistance IV, the controlled output of the photoelectrical coupler
The input of the end connection pwm signal change-over circuit, the output end of the pwm signal change-over circuit connects the FET
Grid.The ac signal that the present invention will be input into is by the diode, diode II, resistance I, resistance II, resistance III, electricity
After resistance IV, transistor, photoelectrical coupler, alternating current is with frequency after the triode end of the photoelectrical coupler produces one and rectification
The pwm signal of rate, alternating current after copped wave determines that the dutycycle of pwm signal is pulse width, and this pwm signal dutycycle
It doesn't matter with the voltage amplitude of alternating current, because the frequency of this pwm signal is relatively low, if being directly used in brightness adjustment control, and people
Eye may feel that obvious stroboscopic, and can not realize the dimming scope of 0-100%, thus the pwm signal change-over circuit by this
Pwm signal of the individual pwm signal reconvert into a frequency higher than 200Hz, and the dimming scope of 0-100% can be realized, due to
It doesn't matter for the voltage amplitude of pwm signal and alternating current, so being that one kind can make to be applied to the most of power network in the whole world, input voltage
Scope is suitable between 90-305V, and suitable for preceding cut and the phase-cut dimming power supply of rear cut.
Brief description of the drawings
Fig. 1 is system architecture block diagram of the invention；
Fig. 2 is circuit theory schematic diagram of the invention；
Fig. 3 is the circuit diagram of the embodiment of the present invention 1；
Fig. 4 is the circuit diagram of the embodiment of the present invention 2；
Fig. 5 is waveform diagram of the present invention.
Specific embodiment
As shown in Figures 1 to 5, a kind of wide input voltage phase-cut dimming circuit, it connects and is operated in integrally adjusting light circuit
In, the integrally adjusting light circuit includes the phase-cut dimmer 1, light adjusting circuit 2, LED or the LED lamp 3 that are sequentially connected, described to cut
The input connection power supply phase line L of phase light modulator 1, the light adjusting circuit 2 includes wide input voltage phase-cut dimming circuit 21, switch
Power supply 22, FET Q2, the output end of the phase-cut dimmer 1 connect the wide input voltage phase-cut dimming circuit 21 and are input into
The one end at end, one end of the input of the Switching Power Supply 22, the input of wide input voltage phase-cut dimming circuit 21 it is another
End, the other end connection zero-power line N of the input of the Switching Power Supply 22, the output plus terminal of the Switching Power Supply 22 and the LED
The anode connection of lamp or LED lamp 3, the source electrode and drain series of the FET Q2 export negative terminal in the Switching Power Supply 22
With between the negative terminal of the LED or LED lamp 3, the output end of wide input voltage phase-cut dimming circuit 21 connects the field effect
Should pipe Q2 grid.
The wide input voltage phase-cut dimming circuit 21 includes the D1 of diode I, the D2 of diode II, the R1 of resistance I, resistance II
R2, the R3 of resistance III, the R4 of resistance IV, transistor Q1, photoelectrical coupler U1, pwm signal change-over circuit 201, the D1 of the diode I,
The positive pole of the D2 of diode II connects the phase line L of power supply, zero line N respectively, and the D1 of the diode I, the negative pole of the D2 of diode II are connected
One end of the R1 of the resistance I is connect and connects, the other end of the R1 of the resistance I connects one end, the crystal of the R2 of resistance II
The base stage of pipe Q1, the other end of the R2 of the resistance II connects the emitter stage and circuit of the transistor Q1 altogether, the transistor
The negative pole connection end of luminous tube, the electricity in one end, the photoelectrical coupler U1 of the colelctor electrode connection R3 of resistance III of Q1
The other end for hindering III R3 connects anode connection terminal, one end of the R4 of the resistance IV, institute of luminous tube in the photoelectrical coupler U1
The control output end for stating the other end connection power supply VCC, the photoelectrical coupler U1 of the R4 of resistance IV connects the pwm signal conversion
The input of circuit 201, the output end of the pwm signal change-over circuit 201 connects the grid of the FET Q2.
The pwm signal change-over circuit 201 can turn DC signal circuit 211 and DC signal including pwm signal
Turn pwm signal circuit 212, can also be MCU signaling conversion circuits 213.
In the present embodiment, Fig. 1 show applied environment of the invention, and wide input voltage phase-cut dimming circuit 21 is in Fig. 1
The present invention.Civil power is separately input to Switching Power Supply 22 and sheet after being input to phase-cut dimming power supply 2 after the copped wave of phase-cut dimmer 1
Invention is wide input voltage phase-cut dimming circuit 21, and Switching Power Supply 22 changes into the direct current supply LED of a constant pressure or constant current
3, and power supply is provided to wide input voltage phase-cut dimming circuit 21, wide input voltage phase-cut dimming circuit 21 is by phase-cut dimming
The alternating current being input into after the copped wave of device 1 is first converted into the pwm signal with alternating current same frequency after rectification, then again turns pwm signal
Change pwm signal of the frequency more than or equal to 200Hz into, then FET Q2 is controlled with this pwm signal, so as to realize
The output of phase-cut dimming power supply 2 is controlled to realize controlling the brightness of LED 3.The frequency of general this pwm signal can more than etc.
In 200Hz, because human eye can feel light flash when the cycle of switching frequency is more than 5mS.
Herein it should be noted that phase-cut dimming power supply 2 is the wide input voltage phase-cut dimming circuit 21 comprising the present invention
With Switching Power Supply 22 and some other auxiliary circuits, in order to better illustrate principle of the invention, in Fig. 1, Fig. 3 and Fig. 4
Only list Switching Power Supply 22, wide input voltage phase-cut dimming circuit 21, FET Q2, do not associated too much with the present invention
Circuit is not just listed one by one.Other Switching Power Supply 22 can be that the Switching Power Supply with active PFC corrections can also be without PFC
The Switching Power Supply of correction, these are not emphasis of the invention certainly, just do not do excessive narration herein.
In the present embodiment, as shown in Fig. 2 the D1 of the diode I, the anode tap of the D2 of diode II connect phase-cut dimming respectively
The input L of power supply, N-terminal, the D1 of the diode I, the cathode terminal of the D2 of diode II connect one end of the R1 of resistance I, the electricity
The other end for hindering I R1 connects one end of the R2 of resistance II and the base stage of the transistor Q1（Or grid）, the R2 of the resistance II
The other end, the emitter stage of the transistor Q1（Or source electrode）Connection ground, the colelctor electrode of the transistor Q1（Or drain electrode）Connection
One end of the R3 of the resistance III and the light emitting diode cathode terminal of the photoelectrical coupler U1, the other end of the R3 of the resistance III
With one end that the light emitting diode anode tap of the photoelectrical coupler U1 connects the R4 of resistance IV, the R4's of the resistance IV is another
The triode end of one end connection power supply VCC, the photoelectrical coupler U1 connects the pwm signal change-over circuit 201, the PWM
The pwm signal of the conversion of signaling conversion circuit 201 and output frequency more than or equal to 200Hz.
Fig. 3 show exemplary embodiments of the present invention 1, and pwm signal change-over circuit 201 described in exemplary embodiments 1 is believed by PWM
Number turn DC signal circuit 211 and DC signal turns pwm signal circuit 212 and constitutes.Alternating current after copped wave is a part of defeated
Enter to Switching Power Supply 22, another part is input to the i.e. described wide input voltage phase-cut dimming circuit 21 of the present invention.Switching Power Supply 22
The direct current of one constant pressure of output or constant current is changed by energy, is that LED 3 provides operating voltage, and for the width is defeated
Enter voltage phase-cut dimming circuit 21 and operating voltage is provided.Alternating current after copped wave is input to the wide input voltage phase-cut dimming electricity
The D1 of the diode I on road 21, the cathode terminal of the D2 of diode II, the D1 of the diode I, the D2 of diode II carry out rectification, then pass through
The R1 of the resistance I, the R2 partial pressures of resistance II are crossed, and is input to the base stage of transistor Q1（Or grid）.Once the transistor Q1 bases
Pole（Or grid）Voltage reach conducting voltage, the transistor Q1 is turned on, and power supply VCC is by the R4 of the resistance IV, described
Photoelectrical coupler U1, then by the colelctor electrode of the transistor（Or drain electrode）To emitter stage（Or source electrode）, then to ground, form one
Current loop, the light-emitting diodes pipe end of the photoelectrical coupler U1 lights, the triode end conducting of the photoelectrical coupler U1,
The triode end of the photoelectrical coupler U1 forms a low level；When the transistor Q1 base stages（Or grid）Voltage be less than
Conducting voltage, the transistor Q1 cut-offs, the photoelectrical coupler U1 light-emitting diodes pipe end no current passes through, the photoelectric coupling
The triode end of device U1 is also switched off, and a high level is formed at the triode end of the photoelectrical coupler U1；When being input to crystal
Pipe Q1 base stages（Or grid）Voltage when reaching conducting voltage again, the transistor Q1 is turned on again, the photoelectrical coupler hair
Optical diode end lights, and the photoelectrical coupler triode end turns on again, at the triode end of the photoelectrical coupler U1 again
A low level is formed, so repeatedly, is exchanged after the triode end of the photoelectrical coupler U1 produces a frequency and rectification
The frequency identical pwm signal of electricity, it is wide that the rp pulse width of pwm signal is roughly equal to the alternating current positive voltage waveform after copped wave
Degree, thus it is also seen that the voltage amplitude of pwm signal and alternating current is not directly dependent upon, therefore the present invention can be used in wide defeated
Enter in the phase-cut dimming power supply of voltage, 90-305V input voltage ranges are interior applicable.The R3 of the resistance III is connected in parallel on described
Play shunting action in the light emitting diode two ends of photoelectrical coupler U1.Because the frequency of alternating current for generally using is all in 47-
In 63Hz, this frequency is relatively low, so the PWM signal frequency that the triode end of the photoelectrical coupler U1 produces is also than relatively low,
If being directly used in control light human eye easily finds flicker, so needing to believe pwm signal reconvert into frequency PWM higher
Number.The pwm signal that the photoelectrical coupler U1 triodes end produces, is input to the described of the pwm signal change-over circuit 201
Pwm signal turns DC signal circuit 211, and the pwm signal turns DC signal circuit 211 generally can first by PWM
Signal inversion, is then converted into DC signal by modes such as integrating circuit by pwm signal, then again enters DC signal
Row voltage is adjusted, and the pwm signal turns one DC signal being adjusted of output of DC signal circuit 211 and is supplied to institute
State DC signal and turn pwm signal circuit 212, the DC signal turns pwm signal circuit 212 again changes DC signal
Pwm signal into a frequency more than or equal to 200Hz, and gone to control the on and off of FET Q2 with this pwm signal, so that
The output of control phase-cut dimming power supply is realized, and realizes controlling the brightness of LED 3.The DC signal turns pwm signal circuit
212 can separate element group by amplifier etc. constitutes into, or by single-chip microcomputer and some peripheral cells.
Fig. 4 show exemplary embodiments of the present invention 2, and the difference of exemplary embodiments 1 is, the pwm signal conversion
Circuit 201 is made up of MCU signaling conversion circuits 213, the MCU signaling conversion circuits 213 be by a single-chip microcomputer and some
Peripheral components are constituted.The pwm signal produced at the triode end of the photoelectrical coupler U1 is input to the MCU signals conversion electricity
After the single-chip microcomputer on road 213, processed by internal processes, can directly utilize the duty cycle conversion of pwm signal to go out one and accordingly account for
The pwm signal of empty ratio, and the pwm signal changed out is generally larger than equal to 200Hz with frequency exemplary embodiments 1.Typical case
Embodiment 2 without as exemplary embodiments 1, it is necessary to first by the photoelectrical coupler U1 triodes end produce pwm signal turn
Change DC signal, pwm signal of the reconvert into frequency more than or equal to 200Hz into, but pwm signal is directly passed through described
Pwm signal after the SCM program treatment of MCU signaling conversion circuits 213 with regard to output frequency more than or equal to 200Hz.
Below in conjunction with waveform diagram shown in Fig. 5, the principle of the invention is described further, waveform a shown in Fig. 5 be through
Alternating current after the phase-cut dimmer copped wave of forward position is again by the waveform after the D1 of the diode I, the D2 rectifications of diode II, waveform a
Voltage by being input to the base stage of the transistor Q1 after the R1 of the resistance I, the R2 partial pressures of resistance II（Or grid）, control institute
The switch of transistor Q1 is stated, the base stage of the general transistor Q1（Or grid）Conducting voltage only has several volts of zero point to several volts, institute
To cause that the ON time of the transistor Q1 is no better than waveform a positive voltage waveform width.When the positive voltage waveform point of waveform a
The base stage of the transistor Q1 is input to after pressure（Or grid）When, the transistor Q1 conductings, the photoelectrical coupler U1 lights
Diode end lights, and the photoelectrical coupler U1 triodes end conducting, the photoelectrical coupler U1 triodes end generation one is low
Level;When in waveform a no-voltages, the transistor Q1 cut-offs, the photoelectrical coupler U1 light emitting diodes do not light, institute
The cut-off of photoelectrical coupler U1 triodes end is stated, the photoelectrical coupler U1 triodes end produces a high level；When under waveform a
When one positive voltage waveform arrives, the transistor Q1 is turned on again, and therefore the photoelectrical coupler U1 triodes end also turns on, institute
State photoelectrical coupler U1 triodes end and produce a low level again, so repeatedly, will at the photoelectrical coupler U1 triodes end
Produce a pwm signal of waveform b as shown in Figure 5, its frequency is identical with the frequency of waveform a, the waveform a shown in Fig. 5 and
Waveform b can be seen that this pwm signal and the voltage amplitude of alternating current is not directly dependent upon, therefore can realize 90-305V models wide
The input voltage for enclosing.The pwm signal of the pwm signal change-over circuit 201 described in exemplary embodiments 1 turns DC signal
The pwm signal of waveform b is obtained circuit 211 pwm signal of waveform c shown in Fig. 5 after first anti-phase, then by integrating circuit or
A DC signal of waveform d as shown in Figure 5, the amplitude and waveform c of DC signal are converted into after other processing of circuit
The dutycycle proportion relation of shown pwm signal, the pwm signal turns DC signal circuit 211 and to direct current
The DC signal that signal be input to after voltage adjustment the pwm signal change-over circuit 201 turns pwm signal circuit
212, the DC signal turns pwm signal circuit 212 and DC signal is converted into frequency more than or equal to 200Hz such as Fig. 5 again
Shown in waveform e pwm signal, and the amplitude proportion relation of the dutycycle of this pwm signal and DC signal, institute
State DC signal turn the pwm signal as shown in waveform e of the generation of pwm signal circuit 212 by control FET Q2 open and
Close, so as to realize controlling the output of phase-cut dimming power supply, and realize controlling the brightness of LED 3.And in exemplary embodiments 2 institute
The MCU signaling conversion circuits 213 of pwm signal change-over circuit 201 are stated, without the pwm signal of waveform b is converted into direct current
Signal, but the pwm signal shown in waveform b is directly converted into a frequency by single-chip microcomputer internal processes and is more than or equal to
Pwm signals of the 200Hz as shown in waveform e.
In sum, it is any of the invention in the phase-cut dimming power supply that can be widely used in wide input voltage of the invention
Made an amendment in thinking, content, improved or equivalent is both fallen within claims of the invention.
Claims (3)
1. a kind of wide input voltage phase-cut dimming circuit, it connects and is operated in integrally adjusting light circuit, the integrally adjusting light electricity
Road includes the phase-cut dimmer being sequentially connected（1）, light adjusting circuit（2）, LED or LED lamp（3）, the phase-cut dimmer（1）
Input connection power supply phase line L, it is characterised in that：The light adjusting circuit（2）Including wide input voltage phase-cut dimming circuit
（21）, Switching Power Supply（22）, FET（Q2）, the phase-cut dimmer（1）Output end connect the wide input voltage and cut
Phase light adjusting circuit（21）One end of input, the Switching Power Supply（22）One end of input, the wide input voltage cut is adjusted
Optical circuit（21）The other end of input, the Switching Power Supply（22）The other end connection zero-power line N of input, the switch
Power supply（22）Output plus terminal and the LED or LED lamp（3）Anode connection, the FET（Q2）Source electrode and leakage
Pole is connected on the Switching Power Supply（22）Output negative terminal and the LED or LED lamp（3）Negative terminal between, the input electricity wide
Crush-cutting phase light adjusting circuit（21）Output end connects the FET（Q2）Grid.
2. wide input voltage phase-cut dimming circuit according to claim 1, it is characterised in that：The wide input voltage cut
Light adjusting circuit（21）Including diode I（D1）, diode II（D2）, resistance I（R1）, resistance II（R2）, resistance III（R3）, electricity
Resistance IV（R4）, transistor（Q1）, photoelectrical coupler（U1）, pwm signal change-over circuit（201）, the diode I（D1）, two poles
Pipe II（D2）Positive pole connect the phase line L of power supply, zero line N, the diode I respectively（D1）, diode II（D2）Negative pole phase
Connect and connect the resistance I（R1）One end, the resistance I（R1）The other end connect the resistance II（R2）One end,
The transistor（Q1）Base stage, the resistance II（R2）The other end connect the transistor（Q1）Emitter stage and circuit it is common
Ground, the transistor（Q1）Colelctor electrode connect the resistance III（R3）One end, the photoelectrical coupler（U1）Middle luminous tube
Negative pole connection end, the resistance III（R3）The other end connect the photoelectrical coupler（U1）The positive pole connection of middle luminous tube
End, the resistance IV（R4）One end, the resistance IV（R4）The other end connection power supply VCC, the photoelectrical coupler（U1）
Control output end connect the pwm signal change-over circuit（201）Input, the pwm signal change-over circuit（201）It is defeated
Go out the end connection FET（Q2）Grid.
3. wide input voltage phase-cut dimming circuit according to claim 1, it is characterised in that：The pwm signal conversion electricity
Road（201）DC signal circuit can be turned including pwm signal（211）Turn pwm signal circuit with DC signal（212）, also
Can be MCU signaling conversion circuits（213）.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195121.XA CN106804079A (en) | 2017-03-29 | 2017-03-29 | Wide input voltage phase-cut dimming circuit |
| US15/642,353 US10039167B1 (en) | 2017-03-29 | 2017-07-06 | Phase-cut dimming circuit with wide input voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195121.XA CN106804079A (en) | 2017-03-29 | 2017-03-29 | Wide input voltage phase-cut dimming circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106804079A true CN106804079A (en) | 2017-06-06 |
Family
ID=58981858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195121.XA Pending CN106804079A (en) | 2017-03-29 | 2017-03-29 | Wide input voltage phase-cut dimming circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN106804079A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116017805A (en) * | 2023-02-21 | 2023-04-25 | 珠海市圣昌电子有限公司 | Circuit for reducing power consumption and electromagnetic interference of phase-cut dimming power supply |
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| CN205883666U (en) * | 2016-08-15 | 2017-01-11 | 珠海市圣昌电子有限公司 | LED phase cut power of adjusting luminance |
| CN206686402U (en) * | 2017-03-29 | 2017-11-28 | 珠海市圣昌电子有限公司 | Wide input voltage phase-cut dimming circuit |
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- 2017-03-29 CN CN201710195121.XA patent/CN106804079A/en active Pending
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|---|---|---|---|---|
| CN201846509U (en) * | 2010-11-04 | 2011-05-25 | 广州万晶半导体照明科技有限公司 | LED switch dimming power source |
| CN202269052U (en) * | 2011-09-01 | 2012-06-06 | 瑞谷科技(深圳)有限公司 | PWM dimming circuit |
| CN104902653A (en) * | 2015-06-24 | 2015-09-09 | 赛尔富电子有限公司 | LED constant-voltage dimming power supply and LED lamp dimming system |
| CN205883666U (en) * | 2016-08-15 | 2017-01-11 | 珠海市圣昌电子有限公司 | LED phase cut power of adjusting luminance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116017805A (en) * | 2023-02-21 | 2023-04-25 | 珠海市圣昌电子有限公司 | Circuit for reducing power consumption and electromagnetic interference of phase-cut dimming power supply |
| CN116017805B (en) * | 2023-02-21 | 2024-01-30 | 珠海市圣昌电子有限公司 | Circuit for reducing power consumption and electromagnetic interference of phase-cut dimming power supply |
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Application publication date: 20170606 |
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