CN101795519A - Dimming control circuit suitable for front-edge and/or rear-edge dimmer of light emitting diode (LED) - Google Patents
Dimming control circuit suitable for front-edge and/or rear-edge dimmer of light emitting diode (LED) Download PDFInfo
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- CN101795519A CN101795519A CN201010124163A CN201010124163A CN101795519A CN 101795519 A CN101795519 A CN 101795519A CN 201010124163 A CN201010124163 A CN 201010124163A CN 201010124163 A CN201010124163 A CN 201010124163A CN 101795519 A CN101795519 A CN 101795519A
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Abstract
The invention discloses a dimming control circuit suitable for a front-edge and/or a rear-edge dimmer of a light emitting diode (LED). The dimming control circuit comprises a low-level detection circuit, a charging/discharging circuit and a peak holding and signal conversion circuit. Input signals of the dimming control circuit are output voltages after the chopping of phase angles of an AC voltage by the dimmer. Once a prime dimmer generates a dimming signal, the dimming control circuit can detect the signal, convert the detected signal into a level signal or a pulse width modulation (PWM) signal and output the signal. When the low-level signal in the dimmer changes in a small scope, a dimming effect in a large scope can be achieved. The dimming control circuit has the advantages of simple structure, extremely low cost, achievement of good dimming effects by cooperating with an LED driving circuit and no need of complicated modulation/demodulation circuits or wireless transmitters and receivers.
Description
Technical field
The present invention relates to be applicable to forward position and/or the back adjusting control circuit of LED along dimmer.Should be to be applicable to forward position and/or back along dimmer, the led drive circuit of detection phase angle and Control current specifically.
Background technology
Along with the consumption of the energy is increasing, requirements of saving energy is also more and more higher, and electric consumption on lighting is a pith of people's energy resource consumption.The New LED illumination will replace traditional gaseous discharge lamp and incandescent lamp as a kind of energy-conservation, green lighting system.The life-span of LED is long, the light efficiency height, can save a large amount of electric energy, and the driving of LED and control mode are simple, are convenient to the flexible luminosity, are particularly suitable for the application that some luminosity need be adjusted according to different situations, such as street lamp, public arena and interior lighting systems such as square when the brightness of illumination that does not need 100%, reduce brightness and can save much electricity.Because the LED power supply adopts efficiently, the AC/DC high frequency switch power of wide region input voltage, traditional input voltage linear regulation or phase control can't be regulated output voltage or electric current, can't realize the brightness regulation of LED lamp.Adopt the drive circuit of tunable optical to have multiple at present: the employing self-timing light modulation in led driver that has, promptly use as a lamp behind the bright certain hour, brightness is turned down, and this light adjusting circuit is subjected to the built-in ambient brightness detection of LED lamp and the control of timing dimming circuit, and can not control flexibly.The control circuit of adding is also arranged in led driver, and in order to receiving wireless signal or the power carrier signal that controller sends, and with the brightness of illumination of this signal controlling LED, still such mode cost is higher, complex circuit, reliability low (with reference to Fig. 1).
Summary of the invention
What the present invention will solve is the problems referred to above that prior art exists, and the forward position and/or the back adjusting control circuit along dimmer that are applicable to LED are provided, and the cooperated with LED drive circuit obtains good dimming effect.
The technical scheme that addresses the above problem employing is: the forward position and/or the back adjusting control circuit along dimmer that are applicable to LED, comprise the low level testing circuit, charge-discharge circuit, peak value keeps and signaling conversion circuit, the input signal of adjusting control circuit is the output voltage of dimmer after to the phase angle copped wave of alternating voltage, it is characterized in that:
Described low level testing circuit converts input signal to square-wave signal, and square-wave signal has the first and second two states, the output voltage copped wave angle of the duty ratio of square-wave signal and dimmer big or small corresponding; Square-wave signal control charge-discharge circuit makes its output discharge and recharge signal: at first state of square-wave signal, charge-discharge circuit is operated in charged state, second state at square-wave signal, charge-discharge circuit is operated in discharge condition, this duty ratio that discharges and recharges the peak value of signal and square-wave signal is proportional, thereby corresponding with the copped wave angle size of the output voltage of dimmer; Keep being converted to level signal or pwm signal by peak value with peak value maintenance and signaling conversion circuit and then the peak value that will discharge and recharge signal, the amplitude of this level signal or the duty ratio of pwm signal be with to discharge and recharge signal peak proportional, and as the output signal of adjusting control circuit.
The forward position of the LED of being applicable to of the present invention and/or back are to detect the low level of dimmer output voltage along the adjusting control circuit purpose of dimmer, by charge-discharge circuit and peak value keep with signaling conversion circuit be the variation of level signal amplitude or the variation of pwm signal duty ratio with the change transitions of low duration, and with it as outputing signal to led drive circuit, the amplitude by level signal changes or the brightness of pwm signal change in duty cycle control LED lamp.For example when dimmer is the thyristor dimmer, hour LED lamp is the brightest for the trigger angle of thyristor, increase along with the thyristor trigger angle, low duration is elongated in the voltage signal of dimmer output, the square-wave signal duty ratio also increases thereupon, the peak value that discharges and recharges signal also increases, the outputs level signals of adjusting control circuit raises or the duty ratio of pwm signal becomes big (when supposing the pwm signal high level, output current is zero), and LED drives the control that main circuit is accepted dimming control signal, its output current is reduced, the LED lamp begins deepening, and when the thyristor trigger angle increased to a certain value, output current was zero, the LED change is gone out, and vice versa.
The present invention is applicable to forward position and/or the back adjusting control circuit along dimmer of LED, is applicable to any forward position and/or the back light adjusting circuit along dimmer.The prime dimmer is as long as produce dim signal, and adjusting control circuit just can go out this input, and is that level signal or pwm signal are exported with the conversion of signals that detects.And the low level signal in the dimmer just can obtain the dimming effect of wide region when changing in very little scope.The present invention is simple in structure, and cost is extremely low, and the cooperated with LED drive circuit can reach good dimming effect, need not complicated modulation-demodulation circuit or wireless transmission and receiver.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is existing a kind of dimming LED drive circuit block diagram.
Fig. 2 is a circuit block diagram of the present invention.
Fig. 3 is first kind of execution mode of isolated form adjusting control circuit of the present invention.
Fig. 4 is the main voltage waveform that the present invention is based on first kind of execution mode of isolated form adjusting control circuit.
Fig. 5 is second kind of execution mode of isolated form adjusting control circuit of the present invention.
Fig. 6 is the third execution mode of isolated form adjusting control circuit of the present invention.
Fig. 7 is the 4th a kind of execution mode of isolated form adjusting control circuit of the present invention.
Fig. 8 is the 5th a kind of execution mode of isolated form adjusting control circuit of the present invention.
Fig. 9 is the 6th a kind of execution mode of isolated form adjusting control circuit of the present invention
Figure 10 is first kind of execution mode of non-isolation type adjusting control circuit of the present invention.
Figure 11 is second kind of execution mode of non-isolation type adjusting control circuit of the present invention.
Figure 12 is the third execution mode of non-isolation type adjusting control circuit of the present invention.
Figure 13 is the 4th a kind of execution mode of non-isolation type adjusting control circuit of the present invention.
Figure 14 is based on a physical circuit figure of the 5th kind of execution mode cooperated with LED drive circuit of isolated form adjusting control circuit.
Specific embodiment
With reference to Fig. 2, the led drive circuit that is applicable to controllable silicon light modulation of the present invention comprises peripheral control unit and led driver, and described led driver comprises rectifier bridge, main circuit, phase angle detection circuit and current control circuit.
With reference to Fig. 3, described adjusting control circuit can adopt isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, first kind of embodiment, with reference to Fig. 3: described low level testing circuit comprises resistance R 1, R4, diode D1, D2, D4, D5, triode Q2, optocoupler U1, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the anode of the anode of diode D4 and diode D5 is connected as former border district, the negative electrode of the negative electrode of diode D1 and diode D2 links to each other and the end of connecting resistance R1, the base stage of another termination triode Q2 of resistance R 1, the emitter of triode Q2 connects former border district, the collector electrode of triode Q2 connects the light-emitting diodes tube cathode of optocoupler U1, the end of the light-emitting diodes tube anode connecting resistance R4 of optocoupler U1, another termination power Vcc of resistance R 4, the phototriode emitter of optocoupler U1 connects output ground, described charge-discharge circuit comprises resistance R 2 and capacitor C 1, the end of the phototriode collector electrode connecting resistance R2 of described optocoupler U1, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, another termination output ground of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, R5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of C2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
With reference to Fig. 4, the present invention is based on the main voltage waveform of first kind of execution mode of isolated form adjusting control circuit, wherein, V1 is an input signal, among the figure shown in the solid line waveform, i.e. voltage waveform after the copped wave (dotted line is the voltage waveform before the copped wave); V2 is the square-wave signal of low level testing circuit; V3 is the output signal of charge-discharge circuit; V4 is an output signal.
With reference to Fig. 5, described adjusting control circuit can adopt isolated form, second kind of embodiment, keep identical with low level testing circuit and peak value in the described implementation of Fig. 3 with signaling conversion circuit, the implementation of different is charge-discharge circuit is current source I1 and capacitor C 1 parallel connection, realizes discharging and recharging function.
With reference to Fig. 6, described adjusting control circuit adopts isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, the third embodiment, with reference to Fig. 6: described low level testing circuit comprises resistance R 1, optocoupler U1 and U2, connect with resistance R 1 after the light-emitting diode inverse parallel of described optocoupler U1 and optocoupler U2, the two ends of this connection in series-parallel branch road connect two inputs respectively, the phototriode collector electrode of optocoupler U1 and optocoupler U2 is connected, the emitter of the phototriode of optocoupler U1 and optocoupler U2 all connects output ground, described charge-discharge circuit comprises resistance R 2 and capacitor C 1, the end of the equal connecting resistance R2 of phototriode collector electrode of described optocoupler U1 and optocoupler U2, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, another termination output ground of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, R5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of C2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
With reference to Fig. 7, described adjusting control circuit can adopt isolated form, the 4th kind of embodiment, keep identical with low level testing circuit and peak value in the described implementation of Fig. 6 with signaling conversion circuit, the implementation of different is charge-discharge circuit is current source I1 and capacitor C 1 parallel connection, realizes discharging and recharging function.
With reference to Fig. 8, phase-angle detection of the present invention and current control circuit can adopt isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, the 5th kind of embodiment, with reference to Fig. 8: described low level testing circuit comprises resistance R 1, diode D1, D2, D4, D5, optocoupler U1, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the anode of the anode of diode D4 and diode D5 is connected as former border district, the negative electrode of the negative electrode of diode D1 and diode D2 is connected and the end of connecting resistance R1, the light-emitting diodes tube anode of another termination optocoupler U1 of resistance R 1, the light-emitting diodes tube cathode of optocoupler U1 connects former border district, the phototriode emitter of optocoupler U1 connects output ground, described charge-discharge circuit bag resistance R 2 and capacitor C 1, the end of the phototriode collector electrode connecting resistance R2 of described optocoupler U1, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, another termination output ground of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, R5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of C2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
With reference to Fig. 9, described adjusting control circuit can adopt isolated form, the 6th kind of embodiment, keep identical with low level testing circuit and peak value in the described implementation of Fig. 8 with signaling conversion circuit, the implementation of different is charge-discharge circuit is current source I1 and capacitor C 1 parallel connection, realizes discharging and recharging function.
With reference to Figure 10, phase-angle detection of the present invention and current control circuit can adopt non-isolation type, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, first kind of embodiment, with reference to Figure 10: described low level testing circuit comprises resistance R 1, diode D1, D2, D4, D5, triode Q2, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the negative electrode of the negative electrode of diode D4 and diode D5 is connected as ground, the negative electrode of the negative electrode of diode D1 and diode D2 is connected and the end of connecting resistance R1, the base stage of another termination triode Q2 of resistance R 1, the grounded emitter of triode Q2, described charge-discharge circuit comprises resistance R 2 and capacitor C 1, the end of the collector electrode connecting resistance R2 of described triode Q2, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, the other end ground connection of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, R5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, the other end ground connection of C2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, the other end ground connection of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
With reference to Figure 11, described adjusting control circuit can adopt non-isolation type, second kind of embodiment, keep identical with low level testing circuit and peak value in the described implementation of Figure 10 with signaling conversion circuit, the implementation of different is charge-discharge circuit is current source I1 and capacitor C 1 parallel connection, realizes discharging and recharging function.
With reference to Figure 12, phase-angle detection of the present invention and current control circuit adopt non-isolation type, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, the third embodiment, with reference to Figure 12, described low level testing circuit comprises resistance R 1, R4, R5, R6, diode D4, D5, triode Q2, Q3, the end of one terminating resistor R5 of the input of described low level testing circuit and the negative electrode of diode D4, the end of the other end connecting resistance R1 of input and the negative electrode of diode D5, the negative electrode of the negative electrode of diode D4 and diode D5 is connected as ground, the base stage of another termination triode Q2 of resistance R 1 and an end of resistance R 4, the grounded emitter of triode Q2, the base stage of another termination triode Q3 of resistance R 5 and an end of resistance R 6, the grounded emitter of triode Q3, the other end ground connection of resistance R 6 and resistance R 4, the collector electrode of triode Q2 and Q3 is connected, described charge-discharge circuit comprises resistance R 2 and capacitor C 1, the end of the collector electrode connecting resistance R2 of described triode Q2 and Q3, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, the other end ground connection of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, R7 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 7, the base stage of another termination triode Q1 of resistance R 7, the other end ground connection of C2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, the other end ground connection of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
With reference to Figure 13, described adjusting control circuit can adopt non-isolation type, the 4th kind of embodiment, keep identical with low level testing circuit and peak value in the described implementation of Figure 12 with signaling conversion circuit, the implementation of different is charge-discharge circuit is current source I1 and capacitor C 1 parallel connection, realizes discharging and recharging function.
With reference to Figure 14, based on a physical circuit figure of the 5th kind of execution mode of isolated form dimming LED drive circuit, specifically:
Line voltage is the input of intensity-scale device, described dimmer comprises unidirectional thyristor SCR, rectifier bridge BD1, resistance R 8, adjustable resistance R9, capacitor C 5, C6, the ac input end of described rectifier bridge BD1 is connected on the zero line, the anode of the forward output termination thyristor SCR of rectifier bridge BD1 and the end of adjustable resistance R9, negative electrode and the capacitor C 5 of the negative sense output termination thyristor SCR of rectifier bridge BD1, the end of C6, the other end of the other end connecting resistance R9 of capacitor C 6 and an end of resistance R 8, the other end of the other end connecting resistance R8 of capacitor C 5 and the control utmost point of thyristor SCR, peripheral control unit is output as the input of rectifier bridge and phase angle detection circuit;
Described adjusting control circuit and Fig. 8 execution mode are basic identical, and distinguishing slightly is that diode D4 among Fig. 8 and D5 omit, this be since among Figure 14 main power rectification bridge can replace diode D4, D5;
The end of the terminating resistor R4 that the output R3 of described adjusting control circuit is connected with triode Q1, the end of the other end connecting resistance R10 of resistance R 4, the reverse input end of electric current loop amplifier IC1, one end of capacitor C 3 and an end of resistance R 6, one end of another termination capacitor C 4 of resistance R 6, the other end of another termination capacitor C 3 of capacitor C 4 and the output of amplifier IC1, the positive input of amplifier IC1 meets reference power supply Vref, the end of the other end connecting resistance R7 of resistance R 10 and the negative terminal of load LED, the input of the output termination Drive and Control Circuit of amplifier IC1.
It is FLYBACK that described LED drives main circuit topology, comprise transformer T1, metal-oxide-semiconductor Q2 and Drive and Control Circuit thereof, diode D4, output electrochemical capacitor C7 and resistance R 7, described transformer T1 primary side non-same polarity connects the rectifier bridge output plus terminal, rectifier bridge output negativing ending grounding, the drain electrode of transformer T1 primary side termination metal-oxide-semiconductor of the same name Q2, the source electrode of Q2 connects rectifier bridge output ground, the grid of Q2 connects the Drive and Control Circuit of metal-oxide-semiconductor, the anode of transformer T1 secondary side terminating diode D4 of the same name, the negative electrode of diode D4 connects anode and the main circuit output plus terminal of electrochemical capacitor C7, the end of the negative terminal connecting resistance R7 of electrochemical capacitor C7, another termination main circuit output negative terminal of resistance R 7.
At last, it is also to be noted that what more than enumerate only is specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought the protection range of inventing.
Claims (11)
1. be applicable to forward position and/or the back adjusting control circuit of LED along dimmer, comprise the low level testing circuit, charge-discharge circuit, peak value keep and signaling conversion circuit, and the input signal of adjusting control circuit is the output voltage of dimmer after to the phase angle copped wave of alternating voltage.It is characterized in that:
Described low level testing circuit converts input signal to square-wave signal, and square-wave signal has the first and second two states, the output voltage copped wave angle of the duty ratio of square-wave signal and dimmer big or small corresponding; Square-wave signal control charge-discharge circuit makes its output discharge and recharge signal: at first state of square-wave signal, charge-discharge circuit is operated in charged state, second state at square-wave signal, charge-discharge circuit is operated in discharge condition, this duty ratio that discharges and recharges the peak value of signal and square-wave signal is proportional, thereby corresponding with the copped wave angle size of the output voltage of dimmer; Be converted to level signal or pwm signal by peak value maintenance and signaling conversion circuit and then the peak value that will discharge and recharge signal, the amplitude of this level signal or the duty ratio of pwm signal be with to discharge and recharge signal peak proportional, and as the output signal of adjusting control circuit.
2. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, resistance R 4, diode D1, diode D2, diode D4, diode D5, triode Q2, optocoupler U1, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the anode of the anode of diode D4 and diode D5 is connected as former border district, the negative electrode of the negative electrode of diode D1 and diode D2 links to each other and the end of connecting resistance R1, the base stage of another termination triode Q2 of resistance R 1, the emitter of triode Q2 connects former border district, the collector electrode of triode Q2 connects the light-emitting diodes tube cathode of optocoupler U1, the end of the light-emitting diodes tube anode connecting resistance R4 of optocoupler U1, another termination power Vcc of resistance R 4, the phototriode emitter of optocoupler U1 connects output ground, described charge-discharge circuit comprises resistance R 2 and capacitor C 1, the end of the phototriode collector electrode connecting resistance R2 of described optocoupler U1, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, another termination output ground of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, R5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of C2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
3. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, resistance R 4, diode D1, diode D2, diode D4, diode D5, triode Q2, optocoupler U1, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the anode of the anode of diode D4 and diode D5 is connected as former border district, the negative electrode of the negative electrode of diode D1 and diode D2 links to each other and the end of connecting resistance R1, the base stage of another termination triode Q2 of resistance R 1, the emitter of triode Q2 connects former border district, the collector electrode of triode Q2 connects the light-emitting diodes tube cathode of optocoupler U1, the end of the light-emitting diodes tube anode connecting resistance R4 of optocoupler U1, another termination power Vcc of resistance R 4, the phototriode emitter of optocoupler U1 connects output ground, described charge-discharge circuit comprises current source I1 and capacitor C 1, the phototriode collector electrode of described optocoupler U1 connects the anode of current source I1, one end of capacitor C 1 and the anode of diode D3, the negative terminal of the other end of capacitor C 1 and current source I1 connects output ground, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
4. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, optocoupler U1 and optocoupler U2, connect with resistance R 1 after the light-emitting diode inverse parallel of described optocoupler U1 and optocoupler U2, the two ends of this connection in series-parallel branch road connect two inputs respectively, the phototriode collector electrode of optocoupler U1 and optocoupler U2 is connected, the emitter of the phototriode of optocoupler U1 and optocoupler U2 all connects output ground, described charge-discharge circuit comprises resistance R 2 and capacitor C 1, the end of the equal connecting resistance R2 of phototriode collector electrode of described optocoupler U1 and optocoupler U2, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, another termination output ground of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
5. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, optocoupler U1 and U2, connect with resistance R 1 after the light-emitting diode inverse parallel of described optocoupler U1 and optocoupler U2, the two ends of this connection in series-parallel branch road connect two inputs respectively, the phototriode collector electrode of optocoupler U1 and optocoupler U2 is connected, the emitter of the phototriode of optocoupler U1 and optocoupler U2 all connects output ground, described charge-discharge circuit comprises current source I1 and capacitor C 1, the phototriode collector electrode of described optocoupler U1 and optocoupler U2 all connects the anode of current source I1, one end of capacitor C 1 and the anode of diode D3, the negative terminal of the other end of capacitor C 1 and current source I1 connects output ground, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
6. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, diode D1, diode D2, diode D4, diode D5, optocoupler U1, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the anode of the anode of diode D4 and diode D5 is connected as former border district, the negative electrode of the negative electrode of diode D1 and diode D2 is connected and the end of connecting resistance R1, the light-emitting diodes tube anode of another termination optocoupler U1 of resistance R 1, the light-emitting diodes tube cathode of optocoupler U1 connects former border district, the phototriode emitter of optocoupler U1 connects output ground, described charge-discharge circuit bag resistance R 2 and capacitor C 1, the end of the phototriode collector electrode connecting resistance R2 of described optocoupler U1, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, another termination output ground of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
7. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts isolated form, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, diode D1, diode D2, diode D4, diode D5, optocoupler U1, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the anode of the anode of diode D4 and diode D5 is connected as former border district, the negative electrode of the negative electrode of diode D1 and diode D2 is connected and the end of connecting resistance R1, the light-emitting diodes tube anode of another termination optocoupler U1 of resistance R 1, the light-emitting diodes tube cathode of optocoupler U1 connects former border district, the phototriode emitter of optocoupler U1 connects output ground, described charge-discharge circuit bag current source I1 and capacitor C 1, the phototriode collector electrode of described optocoupler U1 connects the anode of current source I1, one end of capacitor C 1 and the anode of diode D3, the negative terminal of the other end of capacitor C 1 and current source I1 connects output ground, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, another termination output ground of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, another termination output ground of resistance R 3, the voltage signal on the resistance R 3 is an output signal.
8. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts non-isolation type, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, diode D1, diode D2, diode D4, diode D5, triode Q2, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the negative electrode of the negative electrode of diode D4 and diode D5 is connected as ground, the negative electrode of the negative electrode of diode D1 and diode D2 is connected and the end of connecting resistance R1, the base stage of another termination triode Q2 of resistance R 1, the grounded emitter of triode Q2, described charge-discharge circuit comprises resistance R 2 and capacitor C 1, the end of the collector electrode connecting resistance R2 of described triode Q2, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, the other end ground connection of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, the other end ground connection of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, the other end ground connection of resistance R 3, the voltage signal on the resistance R 3 are output signal.
9. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts non-isolation type, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, diode D1, diode D2, diode D4, diode D5, triode Q2, the anode of one terminating diode D1 of the input of described low level testing circuit and the negative electrode of diode D4, the anode of another terminating diode D2 of input and the negative electrode of diode D5, the negative electrode of the negative electrode of diode D4 and diode D5 is connected as ground, the negative electrode of the negative electrode of diode D1 and diode D2 is connected and the end of connecting resistance R1, the base stage of another termination triode Q2 of resistance R 1, the grounded emitter of triode Q2, described charge-discharge circuit comprises current source I1 and capacitor C 1, the collector electrode of described triode Q2 connects the anode of current source I1, one end of capacitor C 1 and the anode of diode D3, the negativing ending grounding of the other end of capacitor C 1 and current source I1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 5 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 5, the base stage of another termination triode Q1 of resistance R 5, the other end ground connection of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, the other end ground connection of resistance R 3, the voltage signal on the resistance R 3 are output signal.
10. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts non-isolation type, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, resistance R 4, resistance R 5, resistance R 6, diode D4, diode D5, triode Q2, triode Q3, the end of one terminating resistor R5 of the input of described low level testing circuit and the negative electrode of diode D4, the end of the other end connecting resistance R1 of input and the negative electrode of diode D5, the negative electrode of the negative electrode of diode D4 and diode D5 is connected as ground, the base stage of another termination triode Q2 of resistance R 1 and an end of resistance R 4, the grounded emitter of triode Q2, the base stage of another termination triode Q3 of resistance R 5 and an end of resistance R 6, the grounded emitter of triode Q3, the other end ground connection of resistance R 6 and resistance R 4, triode Q2 is connected with the collector electrode of triode Q3, described charge-discharge circuit comprises resistance R 2 and capacitor C 1, the end of the collector electrode connecting resistance R2 of described triode Q2 and triode Q3, one end of capacitor C 1 and the anode of diode D3, another termination reference power supply Vref of resistance R 2, the other end ground connection of capacitor C 1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 7 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 7, the base stage of another termination triode Q1 of resistance R 7, the other end ground connection of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, the other end ground connection of resistance R 3, the voltage signal on the resistance R 3 are output signal.
11. the forward position of LED as claimed in claim 1 and/or back are along the adjusting control circuit of dimmer, it is characterized in that: described adjusting control circuit adopts non-isolation type, comprise the low level testing circuit, charge-discharge circuit and peak value keep and signaling conversion circuit, described low level testing circuit comprises resistance R 1, resistance R 4, resistance R 5, resistance R 6, diode D4, diode D5, triode Q2, triode Q3, the end of one terminating resistor R5 of the input of described low level testing circuit and the negative electrode of diode D4, the end of the other end connecting resistance R1 of input and the negative electrode of diode D5, the negative electrode of the negative electrode of diode D4 and diode D5 is connected as ground, the base stage of another termination triode Q2 of resistance R 1 and an end of resistance R 4, the grounded emitter of triode Q2, the base stage of another termination triode Q3 of resistance R 5 and an end of resistance R 6, the grounded emitter of triode Q3, the other end ground connection of resistance R 6 and resistance R 4, the collector electrode of triode Q2 and Q3 is connected, described charge-discharge circuit comprises current source I1 and capacitor C 1, the collector electrode of described triode Q2 and Q3 connects the anode of current source I1, one end of capacitor C 1 and the anode of diode D3, the negativing ending grounding of the other end of capacitor C 1 and current source I1, described peak value keeps comprising diode D3 with signaling conversion circuit, capacitor C 2, resistance R 3, resistance R 7 and triode Q1, the negative electrode of described diode D3 connects an end of capacitor C 2 and an end of resistance R 7, the base stage of another termination triode Q1 of resistance R 7, the other end ground connection of capacitor C 2, the collector electrode of triode Q1 meets reference power supply Vref, the end of the emitter connecting resistance R3 of triode Q1, the other end ground connection of resistance R 3, the voltage signal on the resistance R 3 are output signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010124163A CN101795519A (en) | 2010-02-11 | 2010-02-11 | Dimming control circuit suitable for front-edge and/or rear-edge dimmer of light emitting diode (LED) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010124163A CN101795519A (en) | 2010-02-11 | 2010-02-11 | Dimming control circuit suitable for front-edge and/or rear-edge dimmer of light emitting diode (LED) |
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| CN101795519A true CN101795519A (en) | 2010-08-04 |
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| CN201010124163A Pending CN101795519A (en) | 2010-02-11 | 2010-02-11 | Dimming control circuit suitable for front-edge and/or rear-edge dimmer of light emitting diode (LED) |
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| WO2012136044A1 (en) * | 2011-04-02 | 2012-10-11 | 英飞特电子（杭州）有限公司 | Method for controlling auxiliary power circuit of dual-line dimmer |
| US9357607B2 (en) | 2011-06-10 | 2016-05-31 | Koninklijke Philips N.V. | LED light source |
| CN103346894B (en) * | 2013-06-25 | 2017-11-28 | 华为技术有限公司 | Chip chamber interface conversion circuit and the network equipment |
| CN108521701A (en) * | 2018-03-30 | 2018-09-11 | 苏岚 | Light adjusting controller and light-dimming method |
| CN112770446A (en) * | 2021-02-19 | 2021-05-07 | 南京工业职业技术大学 | Visual perception self-adaptive LED dimming compatible method |
| CN113677058A (en) * | 2021-08-26 | 2021-11-19 | 横店集团得邦照明股份有限公司 | Light-adjusting control device for light-emitting diode lighting product and implementation method thereof |
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| WO2012136044A1 (en) * | 2011-04-02 | 2012-10-11 | 英飞特电子（杭州）有限公司 | Method for controlling auxiliary power circuit of dual-line dimmer |
| CN102752900A (en) * | 2011-04-02 | 2012-10-24 | 英飞特电子（杭州）股份有限公司 | Method for controlling auxiliary source circuit of two-line light modulator |
| CN102752900B (en) * | 2011-04-02 | 2014-10-29 | 英飞特电子（杭州）股份有限公司 | Method for controlling auxiliary source circuit of two-line light modulator |
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| CN108521701A (en) * | 2018-03-30 | 2018-09-11 | 苏岚 | Light adjusting controller and light-dimming method |
| CN108521701B (en) * | 2018-03-30 | 2024-05-10 | 宁波格立光电科技有限公司 | Dimming controller and dimming method |
| CN112770446A (en) * | 2021-02-19 | 2021-05-07 | 南京工业职业技术大学 | Visual perception self-adaptive LED dimming compatible method |
| CN113677058A (en) * | 2021-08-26 | 2021-11-19 | 横店集团得邦照明股份有限公司 | Light-adjusting control device for light-emitting diode lighting product and implementation method thereof |
| CN113677058B (en) * | 2021-08-26 | 2024-05-07 | 横店集团得邦照明股份有限公司 | Light-emitting diode lighting product dimming control device and implementation method thereof |
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Address after: Hangzhou City, Zhejiang province 310053 Binjiang District Dongxin Road No. 66 East communication B block 309 Applicant after: LED One (Hangzhou) Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310053 Binjiang District Dongxin Road No. 66 East communication B block 309 Applicant before: Inventronics (Hangzhou) Co., Ltd. |
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Application publication date: 20100804 |