CN106304506A - A kind of LED flash band Overvoltage suppressing type energy-saving control circuit - Google Patents
A kind of LED flash band Overvoltage suppressing type energy-saving control circuit Download PDFInfo
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- CN106304506A CN106304506A CN201610885870.0A CN201610885870A CN106304506A CN 106304506 A CN106304506 A CN 106304506A CN 201610885870 A CN201610885870 A CN 201610885870A CN 106304506 A CN106304506 A CN 106304506A
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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]
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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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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Abstract
The invention discloses a kind of LED flash band Overvoltage suppressing type energy-saving control circuit, main by diode rectifier U1, control chip U2, amplifier P, audion VT1, audion VT2, audion VT3, audion VT4, audion VT5, unidirectional thyristor VS, polar capacitor C9, and resistance R7 etc. form.The present invention is by suppressing the harmonic wave in DC voltage or eliminating, and after the instantaneous high current produced when loading DC voltage limits or adjusts, make DC voltage more totally, more steady, thus improve the stablizing effect of output voltage of the present invention, therefore the present invention can effectively prevent LED flash band LEDW from flicker continuously occur when brightness flop, can effectively extend the service life of LED flash band LEDW, well save material resources.
Description
Technical field
The present invention relates to a kind of energy-saving control circuit, specifically, be a kind of LED flash band Overvoltage suppressing
Type energy-saving control circuit.
Background technology
Now with the improving constantly of living standard of people, the requirement to the landscaping of life is more and more higher, people
For the living environment made oneself beautiful, just use the LED flash with various light sources to bring and indoor beautified, and people
More than, LED flash band is disposed in the interior in the undercut at top, is formed not under the control of the control circuit of LED flash band
The beautiful ring of light of well-illuminated degree, this ring of light can not only beautify living environment, moreover it is possible to bring a kind of beautiful magical at night for people
Sense.But, there is the problem of output voltage stability difference in the control circuit of existing LED flash band, causes LED flash band
Flicker, the serious service life shortening LED flash band continuously occur when brightness flop, thus causes material resources
Significant wastage.
Therefore it provides a kind of LED flash band control circuit that can improve output voltage stabilization effect is when business
Anxious.
Summary of the invention
It is an object of the invention to overcome the control circuit of existing LED flash band to there is output voltage stability difference
Defect, it is provided that a kind of LED flash band Overvoltage suppressing type energy-saving control circuit.
The present invention is achieved through the following technical solutions: a kind of LED flash band Overvoltage suppressing type Energy Saving Control electricity
Road, mainly by diode rectifier U1, control chip U2, amplifier P, audion VT1, audion VT2, audion VT3, three poles
Pipe VT4, audion VT5, unidirectional thyristor VS, positive pole is connected with the cathode output end of diode rectifier U1, negative pole and two
The cathode output end of pole pipe commutator U1 be connected after polar capacitor C1, the N pole of ground connection after resistance R1 with diode rectifier
The Zener diode D1 that the cathode output end of U1 is connected, P pole is connected with the cathode output end of diode rectifier U1, positive pole
After inductance L1 the N pole with Zener diode D1 be connected, negative pole be connected with the colelctor electrode of audion VT1 after the polarity of ground connection
Electric capacity C4, positive pole is connected with the cathode output end of diode rectifier U1, negative pole after resistance R4 with the transmitting of audion VT1
Polar capacitor C2, the P pole that pole is connected is connected with the cathode output end of diode rectifier U1, N pole is sent out with audion VT1's
The diode D2 that emitter-base bandgap grading is connected, positive pole is connected with the P pole of diode D1, negative pole is connected with the colelctor electrode of audion VT1
Polar capacitor C3, N pole be connected with the emitter stage of audion VT1, P pole after adjustable resistance R2 with the positive pole of polar capacitor C3
The diode D3 being connected, the electricity that one end is connected with the base stage of audion VT1, the other end is connected with the P pole of diode D3
Resistance R3, the resistance R5 that one end is connected with the positive pole of polar capacitor C4, the other end is connected with the VDD pin of control chip U2,
Positive pole base stage with audion VT2 after adjustable resistance R6 is connected, negative pole is connected with the OSC1 pin of control chip U2
The diode that polar capacitor C5, P pole is connected with the KEY pin of control chip U2, N pole is connected with the base stage of audion VT2
D4, inductance L2, the P pole that one end is connected with the OSC4 pin of control chip U2, the other end is connected with the base stage of audion VT2
After resistance R12 the Q3 pin with control chip U2 be connected, N pole after resistance R13 with the base stage phase of audion VT5
The diode D5 connected, one end is connected with the colelctor electrode of audion VT4, the other end is connected with the colelctor electrode of audion VT3
The resistance R11 of rear ground connection, positive pole is connected with the Q2 pin of control chip U2, negative pole is connected with the base stage of audion VT4
Polar capacitor C6, positive pole Q1 pin with control chip U2 after resistance R9 is connected, negative pole is connected with the base stage of audion VT3
The polar capacitor C7 connect, negative pole is connected with the emitter stage of audion VT4, positive pole after resistance R8 with the transmitting of audion VT3
The polar capacitor C8 that pole is connected, positive pole is connected with the outfan of amplifier P, the control end phase of negative pole and unidirectional thyristor VS
The polar capacitor C9 connected, one end is connected with the emitter stage of audion VT3, the other end is connected with the emitter stage of audion VT5
The resistance R10 connect, one end is connected with the anode of unidirectional thyristor VS, the other end is collectively forming control with the P pole of diode D3
The resistance R7 of the outfan of circuit, positive pole is connected with the positive pole of amplifier P, negative pole after resistance R14 with the output of amplifier P
The polar capacitor C10 that end is connected, positive pole is connected with the negative pole of amplifier P after resistance R15, negative pole is defeated with amplifier P's
Go out polar capacitor C11, the P pole that is connected of end be connected with the negative pole of amplifier P, N pole after resistance R16 with polar capacitor C11
The diode D6 that is connected of negative pole, and one end is connected with the negative pole of amplifier P, the current collection of the other end and audion VT5
The adjustable resistance R17 composition that pole is connected.
The positive pole of described amplifier P is connected with the emitter stage of audion VT3；The N pole of described diode D4 is also with adjustable
The adjustable side of resistance R6 is connected；The grounded collector of described audion VT2, its emitter stage and the VSS pin of control chip U2
It is connected；The VSS pin of described control chip U2 also colelctor electrode with audion VT5 is connected, its GND pin ground connection；Described
The colelctor electrode of audion VT4 is also connected with the P pole of diode D5；The colelctor electrode of described audion VT5 also with unidirectional thyristor
The negative electrode of VS be connected after ground connection；Two inputs of described diode rectifier U1 are collectively forming the input of control circuit.
For guaranteeing the practical effect of the present invention, described control chip U2 is that HCF4060 divides integrated chip.Described list
It is TYN625 unidirectional thyristor to IGCT VS.Described diode rectifier U1 is 4 1N4004 silicon rectifier diode compositions
Diode rectifier.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) harmonic wave in DC voltage can be suppressed or eliminate by the present invention, and produces when can load DC voltage
Instantaneous high current limit or adjust, make DC voltage more totally, more steady, thus improve output voltage of the present invention
Stablizing effect, and can effectively prevent LED flash band from flicker continuously occurring when brightness flop, can effectively extend LED
In the service life of flash of light light bar, well save material resources.
(2) instant high-voltage produced during input voltage can be eliminated or suppress by the present invention, can effectively prevent this
Invention backend electronics element and LED flash band are damaged by high voltage, thus improve the stability of output voltage of the present invention.
(3) resistance to pressure of voltage and dynamic range can be adjusted by the present invention, voltage can be carried out preferable gain, make
Voltage is more steady, thus improves the stability of output voltage of the present invention.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
As it is shown in figure 1, the present invention is mainly by diode rectifier U1, control chip U2, amplifier P, audion VT1, three
Pole pipe VT2, audion VT3, audion VT4, audion VT5, unidirectional thyristor VS, resistance R1, adjustable resistance R2, resistance R3,
Resistance R4, resistance R5, adjustable resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance
R13, resistance R14, resistance R15, resistance R16, adjustable resistance R17, polar capacitor C1, polar capacitor C2, polar capacitor C3, polarity
Electric capacity C4, polar capacitor C5, polar capacitor C6, polar capacitor C7, polar capacitor C8, polar capacitor C9, polar capacitor C10, pole
Property electric capacity C11, Zener diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, inductance L1, with
And inductance L2 composition.
For guaranteeing the practical effect of the present invention, described control chip U2 is that HCF4060 divides integrated chip.Described list
It is TYN625 unidirectional thyristor to IGCT VS.Described diode rectifier U1 is 4 1N4004 silicon rectifier diode compositions
Diode rectifier；Meanwhile, amplifier P is TL061 amplifier, and audion VT1 is 3AX31 audion, audion VT2～VT5
It is 3DG06 audion；Resistance Rl is 500k Ω metalfilmresistor, and the resistance adjustable extent of adjustable resistance R2 is 10～1000k
Ω, the resistance of resistance R3 is 3.3k Ω, and the resistance of resistance R4 is 4.7k Ω, and the resistance of resistance R5 is 200k Ω, the resistance of resistance R6
Value scope is the adjustable resistance of 20～200k Ω, and the resistance of resistance R7～R9 is 5k Ω, and the resistance of resistance R10 is 100 Ω, electricity
The resistance of resistance R11 is 10k Ω, and the resistance of resistance R12 and resistance R13 is 15k Ω, and the resistance of resistance R14 is 1.5k Ω, resistance
The resistance of R15 is 3.3k Ω, and the resistance of resistance R16 is 2k Ω, and the resistance range of accommodation of adjustable resistance R17 is 20～240k Ω；
Polar capacitor C1 and polar capacitor C4 is the alminium electrolytic condenser of 1000 μ F/16V, and the capacitance of polar capacitor C2 is 470 μ F/25V,
The capacitance of polar capacitor C3 is 8 μ F/25V, and the capacitance of polar capacitor C5 is 100 μ F/25V, polar capacitor C6, polar capacitor C7 and
The capacitance of polar capacitor C8 is 10 μ F/16V, and the capacitance of polar capacitor C9 is 200 μ F/50V, polar capacitor C10 and polarity electricity
The capacitance holding C11 is 47 μ F/16V；Zener diode D1 is 1N4016 Zener diode, and diode D2 and diode D3 is
1N4011 diode, diode D4 and diode D5 are 1N5406 diode, and diode D6 is 1N4013 diode；Inductance L1
With the core inductance that inductance L2 is 100 μ P/50Vd.
During connection, the positive pole of polar capacitor C1 is connected with the cathode output end of diode rectifier U1, negative pole and two poles
The cathode output end of pipe commutator U1 be connected after ground connection.The N pole of Zener diode D1 after resistance R1 with diode rectifier
The cathode output end of U1 is connected, and P pole is connected with the cathode output end of diode rectifier U1.The positive pole warp of polar capacitor C4
After inductance L1, the N pole with Zener diode D1 is connected, negative pole be connected with the colelctor electrode of audion VT1 after ground connection.Polarity electricity
The positive pole holding C2 is connected with the cathode output end of diode rectifier U1, negative pole after resistance R4 with the transmitting of audion VT1
Pole is connected.The P pole of diode D2 is connected with the cathode output end of diode rectifier U1, N pole and the transmitting of audion VT1
Pole is connected.The positive pole of polar capacitor C3 is connected with the P pole of diode D1, and negative pole is connected with the colelctor electrode of audion VT1.
The N pole of diode D3 is connected with the emitter stage of audion VT1, P pole after adjustable resistance R2 with the positive pole phase of polar capacitor C3
Connect.One end of resistance R3 is connected with the base stage of audion VT1, and the other end is connected with the P pole of diode D3.
Wherein, one end of resistance R5 is connected with the positive pole of polar capacitor C4, the other end and the VDD pin of control chip U2
It is connected.The positive pole of polar capacitor C5 base stage with audion VT2 after adjustable resistance R6 is connected, negative pole and control chip U2
OSC1 pin be connected.The P pole of diode D4 is connected with the KEY pin of control chip U2, N pole and the base of audion VT2
Pole is connected.One end of inductance L2 is connected with the OSC4 pin of control chip U2, and the other end is connected with the base stage of audion VT2
Connect.The P pole of diode D5 Q3 pin with control chip U2 after resistance R12 is connected, N pole after resistance R13 with
The base stage of audion VT5 is connected.One end of resistance R11 is connected with the colelctor electrode of audion VT4, the other end and audion
The colelctor electrode of VT3 be connected after ground connection.The positive pole of polar capacitor C6 is connected with the Q2 pin of control chip U2, negative pole and three poles
The base stage of pipe VT4 is connected.The positive pole of polar capacitor C7 Q1 pin with control chip U2 after resistance R9 is connected, negative pole with
The base stage of audion VT3 is connected.The negative pole of polar capacitor C8 is connected with the emitter stage of audion VT4, and positive pole is through resistance R8
Emitter stage with audion VT3 is connected afterwards.
Meanwhile, the positive pole of polar capacitor C9 is connected with the outfan of amplifier P, negative pole and the control of unidirectional thyristor VS
End is connected.One end of resistance R10 is connected with the emitter stage of audion VT3, and the other end is connected with the emitter stage of audion VT5
Connect.One end of resistance R7 is connected with the anode of unidirectional thyristor VS, one of them electricity of the other end and LED flash band LEDW
Pole is connected, and the P pole of described diode D3 is connected with another electrode of LED flash band LEDW.Polar capacitor C10 is just
Pole is connected with the positive pole of amplifier P, and negative pole outfan with amplifier P after resistance R14 is connected.Polar capacitor C11's
Positive pole negative pole with amplifier P after resistance R15 is connected, and negative pole is connected with the outfan of amplifier P.The P of diode D6
Pole is connected with the negative pole of amplifier P, and N pole negative pole with polar capacitor C11 after resistance R16 is connected.Adjustable resistance R17
One end be connected with the negative pole of amplifier P, the other end is connected with the colelctor electrode of audion VT5.
The positive pole of described amplifier P is connected with the emitter stage of audion VT3；The N pole of described diode D4 is also with adjustable
The adjustable side of resistance R6 is connected；The grounded collector of described audion VT2, its emitter stage and the VSS pin of control chip U2
It is connected；The VSS pin of described control chip U2 also colelctor electrode with audion VT5 is connected, its GND pin ground connection；Described
The colelctor electrode of audion VT4 is also connected with the P pole of diode D5；The colelctor electrode of described audion VT5 also with unidirectional thyristor
The negative electrode of VS be connected after ground connection；Two inputs of described diode rectifier U1 are collectively forming the input of control circuit also
It is connected with civil power.
During work, diode rectifier U1 and polar capacitor C1 forms rectifier filter, and the 220V civil power of input is rectified
The diode rectifier U1 of wave filter generates DC voltage after carrying out rectification, and polar capacitor C1 is then by the harmonic wave in raw DC voltage
Eliminating, make DC voltage cleaner, the DC voltage after filtration is transferred to Zener diode D1, resistance R1, resistance R5, electricity
The current-limiting circuit that sense L1 and polar capacitor C4 is formed, the instantaneous high current produced when DC voltage is loaded by this current-limiting circuit is carried out
Limit, and carry out electric current release by polar capacitor C4, make DC voltage more stable, by current-limiting circuit, DC voltage is carried out
Obtaining stable 6.8V DC voltage after current limliting, this 6.8V DC voltage is also transferred to control chip U2, polarity by current-limiting circuit
The multi-resonant oscillating circuit that electric capacity C5, adjustable resistance R6, inductance L2 and diode D4 are formed, and this stable 6.8V DC voltage is same
The running voltage of Shi Zuowei control chip U2.
When multi-resonant oscillating circuit obtain electric after i.e. start overcurrent is vibrated, control chip U2 to multivibrator produce
Oscillator signal carry out frequency division counter after, the control of the Q1 pin of control chip U2 and Q2 pin and Q3 pin exporting change electricity
Flat, make the switching controller that audion VT3～VT5, resistance R9～R13 and polar capacitor C7～C9 formed audion VT3 and
Audion VT4 and audion VT5 carries out interval and turns on the voltage and current that output is different, and this voltage and current is then by amplifying
Device P, polar capacitor C10, polar capacitor C11, diode D6, resistance R14, resistance R15, resistance R16 and adjustable resistance R17 are formed
Operational amplification circuit be transmitted, this operational amplification circuit is defeated by being adjusted the resistance of adjustable resistance R17 changing
Entering the resistance to pressure of voltage, and the dynamic range of change electric current, the voltage and current after regulation then passes through amplifier P to carrying out voltage
Gain, makes output voltage and electric current held stationary, and the voltage and current after gain is then transferred to by unidirectional by operational amplification circuit
The buffer circuit that IGCT VS, polar capacitor C9 and resistance R7 are formed buffers, and the electric current making output is more stable, and this is buffered
Circuit provides stable running voltage for LED flash band LEDW, and LED flash band LEDW is then according to switching controller output
Different power frequencies carry out flashing.The present invention operationally, by being adjusted the resistance of adjustable resistance R6, can change
The flicker frequency of LED flash band LEDW.
Wherein, the present invention is in order to prevent diode rectifier U1 backend electronics element and LED flash band from being inputted by voltage
Time the instant high-voltage that produces damage, therefore the present invention is at cathode output end and the LED flash band of diode rectifier U1
Be provided with between LEDW by audion VT1, polar capacitor C2, polar capacitor C3, diode D2, diode D3, adjustable resistance R2,
The overvoltage crowbar that resistance R3 and resistance R4 is formed, creates when the cathode output end output voltage of diode rectifier U1
During high voltage, because adjustable resistance R2 is 10～1000k Ω high-impedance resistors, the resistance changing adjustable resistance R2 just can be to high voltage
Damming, polar capacitor C2 and polar capacitor C3 starts to charge up simultaneously, when polar capacitor C2 and polar capacitor C3 is saturated pair
Audion VT1 start electric discharge, audion VT1 obtain electric after turn on, audion VT1 release voltage is defeated after resistance R3 and diode D3
Go out 6.8V galvanic current pressure, thus the instant high-voltage produced during input voltage can be eliminated by this overvoltage crowbar
Or suppression, can effectively prevent backend electronics element of the present invention and LED flash band from being damaged by high voltage, thus improve this
The stability of bright output voltage.
The present invention is by suppressing the harmonic wave in DC voltage or eliminating, and the wink produced when loading DC voltage
Between after high electric current limits or adjusts, make DC voltage more totally, more steady, thus improve the steady of output voltage of the present invention
Determining effect, therefore the present invention can effectively prevent LED flash band from flicker continuously occur when brightness flop, can effectively extend
In the service life of LED flash band, well save material resources.
According to above-described embodiment, can well realize the present invention.
Claims (4)
1. a LED flash band Overvoltage suppressing type energy-saving control circuit, it is characterised in that main by diode rectifier
U1, control chip U2, amplifier P, audion VT1, audion VT2, audion VT3, audion VT4, audion VT5, unidirectional
IGCT VS, positive pole is connected with the cathode output end of diode rectifier U1, negative pole is defeated with the negative pole of diode rectifier U1
Go out the cathode output end with diode rectifier U1 after resistance R1 of polar capacitor C1, the N pole of ground connection after end is connected be connected,
The Zener diode D1 that P pole is connected with the cathode output end of diode rectifier U1, positive pole after inductance L1 with voltage stabilizing two pole
The polar capacitor C4 of ground connection, positive pole and diode after the N pole of pipe D1 is connected, negative pole is connected with the colelctor electrode of audion VT1
The polar capacitor that the cathode output end of commutator U1 is connected, negative pole emitter stage with audion VT1 after resistance R4 is connected
The diode that C2, P pole is connected with the cathode output end of diode rectifier U1, N pole is connected with the emitter stage of audion VT1
D2, polar capacitor C3, the N pole that positive pole is connected with the P pole of diode D1, negative pole is connected with the colelctor electrode of audion VT1 with
The diode D3 that the emitter stage of audion VT1 is connected, P pole positive pole with polar capacitor C3 after adjustable resistance R2 is connected,
The resistance R3 that one end is connected with the base stage of audion VT1, the other end is connected with the P pole of diode D3, one end and polarity electricity
Holding the resistance R5 that positive pole is connected, the other end is connected of C4 with the VDD pin of control chip U2, positive pole is after adjustable resistance R6
Be connected with the base stage of audion VT2, polar capacitor C5, P pole that negative pole is connected with the OSC1 pin of control chip U2 and control
The diode D4 that the KEY pin of coremaking sheet U2 is connected, N pole is connected with the base stage of audion VT2, one end and control chip U2
Inductance L2, the P pole that OSC4 pin is connected, the other end is connected with the base stage of audion VT2 after resistance R12 with control core
The diode D5 that the Q3 pin of sheet U2 is connected, N pole base stage with audion VT5 after resistance R13 is connected, one end
Be connected with the colelctor electrode of audion VT4, the other end be connected with the colelctor electrode of audion VT3 after the resistance R11 of ground connection, positive pole
Be connected with the Q2 pin of control chip U2, polar capacitor C6 that negative pole is connected with the base stage of audion VT4, positive pole is through resistance
The polar capacitor C7 that after R9, the Q1 pin with control chip U2 is connected, negative pole is connected with the base stage of audion VT3, negative pole with
The polar capacitor C8 that the emitter stage of audion VT4 is connected, positive pole emitter stage with audion VT3 after resistance R8 is connected,
Positive pole is connected with the outfan of amplifier P, negative pole controls the polar capacitor C9 that end is connected, one end with unidirectional thyristor VS's
Be connected with the emitter stage of audion VT3, resistance R10 that the other end is connected with the emitter stage of audion VT5, one end is with unidirectional
The anode of IGCT VS is connected, the P pole of the other end and diode D3 is collectively forming the resistance R7 of outfan of control circuit, just
The polar capacitor C10 that pole is connected with the positive pole of amplifier P, negative pole outfan with amplifier P after resistance R14 is connected,
Positive pole polar capacitor that negative pole is connected, negative pole is connected with the outfan of amplifier P with amplifier P after resistance R15
The diode that C11, P pole is connected with the negative pole of amplifier P, N pole negative pole with polar capacitor C11 after resistance R16 is connected
D6, and the adjustable resistance R17 that one end is connected with the negative pole of amplifier P, the other end is connected with the colelctor electrode of audion VT5
Composition；The positive pole of described amplifier P is connected with the emitter stage of audion VT3；The N pole of described diode D4 also with adjustable resistance
The adjustable side of R6 is connected；The grounded collector of described audion VT2, its emitter stage are connected with the VSS pin of control chip U2
Connect；The VSS pin of described control chip U2 also colelctor electrode with audion VT5 is connected, its GND pin ground connection；Described three poles
The colelctor electrode of pipe VT4 is also connected with the P pole of diode D5；The colelctor electrode of described audion VT5 is also with unidirectional thyristor VS's
Negative electrode be connected after ground connection；Two inputs of described diode rectifier U1 are collectively forming the input of control circuit.
A kind of LED flash band Overvoltage suppressing type energy-saving control circuit the most according to claim 1, its feature exists
In, described control chip U2 is that HCF4060 divides integrated chip.
A kind of LED flash band Overvoltage suppressing type energy-saving control circuit the most according to claim 2, its feature exists
In, described unidirectional thyristor VS is TYN625 unidirectional thyristor.
A kind of LED flash band Overvoltage suppressing type energy-saving control circuit the most according to claim 3, its feature exists
In, described diode rectifier U1 is the diode rectifier of 4 1N4004 silicon rectifier diode compositions.
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| CN201610885870.0A CN106304506B (en) | 2016-10-11 | 2016-10-11 | A kind of LED flash band overvoltage suppressive energy-saving control circuit |
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| CN201610885870.0A CN106304506B (en) | 2016-10-11 | 2016-10-11 | A kind of LED flash band overvoltage suppressive energy-saving control circuit |
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| CN105848361A (en) * | 2016-05-28 | 2016-08-10 | 成都白描网络科技有限公司 | Dimming LED constant current driving system based on transistor oscillating circuit |
| CN105873286A (en) * | 2016-05-30 | 2016-08-17 | 成都昂迪加科技有限公司 | Energy-saving power circuit for constant-current drive type cold light LED |
| CN206181437U (en) * | 2016-10-11 | 2017-05-17 | 四川万康节能环保科技有限公司 | LED flash light area is with overvoltage suppressing type energy -saving control circuit |
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| CN106304506B (en) | 2018-06-26 |
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