CN105873286A - Energy-saving power circuit for constant-current drive type cold light LED - Google Patents
Energy-saving power circuit for constant-current drive type cold light LED Download PDFInfo
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- CN105873286A CN105873286A CN201610370813.9A CN201610370813A CN105873286A CN 105873286 A CN105873286 A CN 105873286A CN 201610370813 A CN201610370813 A CN 201610370813A CN 105873286 A CN105873286 A CN 105873286A
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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 an energy-saving power circuit for a constant-current drive type cold light LED. The power circuit is characterized by being mainly composed of a control chip U2, a reference current correcting circuit, a thyristor trigger circuit, a transformer T, a diode rectifier U1, a polar capacitor C1, a polar capacitor C5, a resistor R9, a constant-current drive circuit and a low-pass filtering circuit, wherein the constant-current drive circuit is connected with the non-dotted terminal and the dotted terminal of a transformer T secondary side induction coil, and the low-pass filtering circuit is connected between the diode rectifier U1 and the transformer T in series. By means of the energy-saving power circuit, filtering processing can be carried out on the voltage and current of the input end, the input voltage and current are more stable, the strength of the filtered voltage and current is adjusted, and movement of electromagnetic waves of the current is kept in a uniform speed state, so that stable working current can be output, and the stability of brightness of an LED lamp is ensured.
Description
Technical field
The present invention relates to electric energy-saving field, specifically, be that a kind of constant-current driving formula cold light LED is with energy-conservation
Power circuit.
Background technology
At present, due to LED have that energy consumption is low, the feature such as length in service life and safety and environmental protection, it is
Become one of main product of people's life lighting.Owing to LED is different from traditional electric filament lamp, therefore
Its needs are driven by special power circuit.But, the power circuit that current LED is used is not
Only being easily subject to the impact of external voltage fluctuations, and its load capacity is poor, output electric current is unstable, from
And cause the brightness instability of LED, power consumption, service life short.
Therefore it provides one can improve load capacity, can ensure that again outputting current steadily, can also drop simultaneously
The LED power circuit of low energy consumption is the task of top priority.
Summary of the invention
It is an object of the invention to overcome LED voltage circuit of the prior art to there is load capacity poor, defeated
Go out the defect that electric current is unstable, it is provided that a kind of constant-current driving formula cold light LED energy-saving electric power circuit.
The present invention is achieved through the following technical solutions: a kind of constant-current driving formula cold light LED energy-saving electric power
Circuit, mainly by control chip U2, transformator T, diode rectifier U1, respectively with transformator T secondary
The constant-current drive circuit that the non-same polarity of inductance coil is connected with Same Name of Ends, negative pole and diode rectifier U1
The polar capacitor that cathode output end is connected, positive pole is connected with the cathode output end of diode rectifier U1
C1, negative pole is connected with the CS pin of control chip U2, positive pole after inductance L1 with control chip U2
The polar capacitor C5 that is connected of RE pin, one end is connected with the positive pole of polar capacitor C5, the other end with
The GND pin of control chip U2 be connected after the resistance R9 of ground connection, be serially connected in the VCC of control chip U2
Reference current correcting circuit between pin and VS-pin, is serially connected in control chip U2 and corrects with reference current
Thyristor gating circuit between circuit, and be serially connected between diode rectifier U1 and transformator T low
Bandpass filter circuit forms；Described reference current correcting circuit is electric with low-pass filter circuit and IGBT group respectively
Road is connected.
Described constant-current drive circuit by audion VT3, audion VT4, positive pole after resistance R16 with three poles
The polar capacitor C9, N that the base stage of pipe VT3 is connected, negative pole is connected with the colelctor electrode of audion VT3
Pole positive pole with polar capacitor C9 after resistance R18 is connected, P pole after resistance R20 with audion VT3
The diode D7 that is connected of emitter stage, one end is connected with the N pole of diode D7, the other end and three poles
The inductance L2 that the emitter stage of pipe VT4 is connected, positive pole after resistance R21 with the base stage phase of audion VT4
Polar capacitor C10, the N pole that connection, negative pole are connected with the emitter stage of audion VT3 and audion VT4
Colelctor electrode be connected, the emitter stage of P pole and audion VT4 is collectively forming the outfan of constant-current drive circuit
Zener diode D8, negative pole P pole with Zener diode D8 after resistance R22 is connected, positive pole with
The polar capacitor C11 that the emitter stage of audion VT3 is connected, one end is connected with the emitter stage of audion VT3
Connect, resistance R19 that the other end is connected with the negative pole of polar capacitor C10, and P pole and audion VT3
The diode D6 that base stage is connected, N pole positive pole with polar capacitor C11 after resistance R17 is connected
Composition；The positive pole of described polar capacitor C9 is connected with the non-same polarity of transformator T secondary inductance coil；Institute
The Same Name of Ends of the N pole and transformator T secondary inductance coil of stating diode D6 is connected.
Described low-pass filter circuit is by the cathode output end of audion VT1, P pole Yu diode rectifier U1
Be connected, diode D1 that N pole base stage with audion VT1 after adjustable resistance R2 is connected, positive pole
Be connected with the P pole of diode D1, polar capacitor C2 that negative pole is connected with the base stage of audion VT1,
Ground connection after P pole is connected with the positive pole of polar capacitor C2, N pole is connected with the colelctor electrode of audion VT1
Diode D3, one end is connected with the N pole of diode D1, the emitter stage phase of the other end and audion VT1
The resistance R3 connected, and positive pole N pole with diode D1 after resistance R4 is connected, negative pole is through electricity
The polar capacitor C3 composition being connected with the colelctor electrode of audion VT1 after resistance R5；Described audion VT1
Base stage be connected with reference current correcting circuit, its colelctor electrode is connected with thyristor gating circuit.
Described reference current correcting circuit by audion VT2, N pole after resistance R7 with control chip U's
The diode D2 that VCC pin is connected, P pole emitter stage with audion VT2 after resistance R8 is connected,
Positive pole is connected with the colelctor electrode of audion VT2, polar capacitor C4, the P pole of minus earth is through resistance R10
The diode that base stage with audion VT2 is connected afterwards, N pole is connected with the VS pin of control chip U2
D4, and positive pole be sequentially connected through resistance R12 negative pole with polar capacitor C4 after resistance R11, negative
Pole is as the outfan of reference current correcting circuit the polar capacitor C6 group that is connected with thyristor gating circuit
Become；The N pole of described diode D4 is connected with the positive pole of polar capacitor C6；The N of described diode D2
Pole is connected with the base stage of audion VT1.
Described thyristor gating circuit is by field effect transistor MOS1, field effect transistor MOS2, one end and control core
The resistance R13 that the LO pin of sheet U2 is connected, the other end is connected with the grid of field effect transistor MOS2,
Negative pole grid with field effect transistor MOS2 after resistance R15 is connected, the transmitting of positive pole and audion VT1
The polar capacitor C8 that pole is connected, negative pole is connected with the grid of field effect transistor MOS1, positive pole is through resistance
The polar capacitor C7 being connected with the HC pin of control chip U2 after R6, one end and field effect transistor MOS1
The resistance R14 that source electrode is connected, the other end is connected with the VS+ pin of control chip U2, and P pole
Be connected with the source electrode of field effect transistor MOS2, the non-same polarity of the former limit inductance coil of N pole and transformator T
The diode D5 composition being connected；The grounded drain of described field effect transistor MOS2, its grid and polar capacitor
The negative pole of C6 is connected, and its source electrode is connected with the source electrode of field effect transistor MOS1；Described field effect transistor MOS1
The drain electrode Same Name of Ends of limit former with transformator T inductance coil respectively and the emitter stage of audion VT1 be connected.
For the practical effect of the present invention, described control chip U2 the most preferentially uses the integrated core of L6569
Sheet realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) input terminal voltage electric current can be filtered processing by the present invention, and the voltage x current making input is more steady,
The intensity of the voltage x current after Filtering Processing the most of the present invention is adjusted, and makes the motion of the electromagnetic wave of electric current protect
Hold at the uniform velocity state, thus the present invention improves the stability of LED brightness.
(2) present invention has stronger driving force simultaneously, and the driving force of the present invention is than existing LED electricity
The driving force of source circuit improves about 60%, i.e. the present invention can provide stable to multiple LED groups simultaneously
Driving electric current.
(3) present invention employs the integrated chip of high-precision L6569, it is strong, overheated that this chip has stability
The functions such as protection, overcurrent protection, effectively raise the stability of the output electric current of the present invention.
(4) service life that can effectively extend LED of the present invention, the electricity of more than 50% can be saved simultaneously,
Thus meet people to LED control system in the demand of energy-conservation aspect.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the constant-current drive circuit 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 the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U2, transformator T, diode rectifier U1,
Polar capacitor C1, polar capacitor C5, inductance L1, constant-current drive circuit, thyristor gating circuit, benchmark
Current correction circuit, and low-pass filter circuit composition.
During enforcement, the negative pole of polar capacitor C1 is connected with the cathode output end of diode rectifier U1, it
Positive pole is connected with the cathode output end of diode rectifier U1.The negative pole of polar capacitor C5 and control chip
The CS pin of U2 is connected, its positive pole RE pin with control chip U2 after inductance L1 is connected.
One end of resistance R9 is connected with the positive pole of polar capacitor C5, the GND of the other end and control chip U2 pipe
Foot be connected after ground connection.Constant-current drive circuit respectively with the non-same polarity of transformator T secondary inductance coil with
Name end is connected.Reference current correcting circuit be serially connected in the VCC pin of control chip U2 and VS-pin it
Between.Thyristor gating circuit is serially connected between control chip U2 and reference current correcting circuit.Low-pass filtering electricity
Road is serially connected between diode rectifier U1 and transformator T.
Described reference current correcting circuit is connected with low-pass filter circuit and thyristor gating circuit respectively.Institute
The input stating diode rectifier U1 is connected with power supply.
Wherein, described low-pass filter circuit by audion VT1, resistance R1, adjustable resistance R2, resistance R3,
Resistance R4, resistance R5, polar capacitor C3, diode D1, and diode D3 form.
During connection, the P pole of diode D1 is connected with the cathode output end of diode rectifier U1, its N
Pole base stage with audion VT1 after adjustable resistance R2 is connected.The positive pole of polar capacitor C2 and diode
The P pole of D1 is connected, its negative pole is connected with the base stage of audion VT1.The P pole of diode D3 and pole
Ground connection after the positive pole of property electric capacity C2 is connected, its N pole is connected with the colelctor electrode of audion VT1.
Meanwhile, one end of resistance R3 be connected with the N pole of diode D1, its other end and audion VT1
Emitter stage be connected.The positive pole of polar capacitor C3 N pole with diode D1 after resistance R4 is connected,
Its negative pole colelctor electrode with audion VT1 after resistance R5 is connected.The base stage of described audion VT1 with
Reference current correcting circuit is connected, and its colelctor electrode is connected with thyristor gating circuit.
Further, described reference current correcting circuit is by audion VT2, resistance R7, resistance R8, electricity
Resistance R10, resistance R11, resistance R12, polar capacitor C4, polar capacitor C6, diode D2, and
Diode D4 forms.
During connection, the N pole of diode D2 VCC pin with control chip U after resistance R7 is connected,
Its P pole emitter stage with audion VT2 after resistance R8 is connected.The positive pole of polar capacitor C4 and three poles
The colelctor electrode of pipe VT2 is connected, its minus earth.The P pole of diode D4 after resistance R10 with three poles
The base stage of pipe VT2 is connected, its N pole is connected with the VS pin of control chip U2.Polar capacitor C6
Positive pole be sequentially connected through resistance R12 negative pole with polar capacitor C4 after resistance R11, its negative pole is made
On the basis of the outfan of current correction circuit being connected with thyristor gating circuit.The N of described diode D4
Pole is connected with the positive pole of polar capacitor C6；The N pole of described diode D2 and the base stage of audion VT1
It is connected.
Further, described thyristor gating circuit by field effect transistor MOS1, field effect transistor MOS2,
Resistance R6, resistance R13, resistance R14, resistance R15, polar capacitor C8, and Zener diode D5
Composition.
During connection, one end of resistance R13 is connected with the LO pin of control chip U2, its other end with
The grid of field effect transistor MOS2 is connected.The negative pole of polar capacitor C8 after resistance R15 with field effect transistor
The grid of MOS2 is connected, its positive pole is connected with the emitter stage of audion VT1.Polar capacitor C7's is negative
Pole is connected with the grid of field effect transistor MOS1, its positive pole after resistance R6 with the HC of control chip U2
Pin is connected.One end of resistance R14 is connected with the source electrode of field effect transistor MOS1, its other end and control
The VS+ pin of coremaking sheet U2 is connected.The P pole of diode D5 is connected with the source electrode of field effect transistor MOS2
Connect, its N pole is connected with the non-same polarity of the former limit inductance coil of transformator T.
The grounded drain of described field effect transistor MOS2, its grid is connected with the negative pole of polar capacitor C6,
Its source electrode is connected with the source electrode of field effect transistor MOS1；The drain electrode of described field effect transistor MOS1 respectively with change
The Same Name of Ends of depressor T former limit inductance coil is connected with the emitter stage of audion VT1.
As in figure 2 it is shown, described constant-current drive circuit is by audion VT3, audion VT4, resistance R16,
Resistance R17, resistance R18, resistance R19, resistance R10, resistance R21, resistance R22, polar capacitor
C9, polar capacitor C10, polar capacitor C11, diode D6, diode D7, Zener diode D8,
And inductance L2 composition.
During connection, the positive pole of polar capacitor C9 base stage with audion VT3 after resistance R16 is connected,
Its negative pole is connected with the colelctor electrode of audion VT3.The N pole of diode D7 after resistance R18 with polarity
The positive pole of electric capacity C9 is connected, its P pole emitter stage with audion VT3 after resistance R20 is connected.
One end of inductance L2 is connected with the N pole of diode D7, the emitter stage phase of its other end and audion VT4
Connect.The positive pole of polar capacitor C10 base stage with audion VT4 after resistance R21 is connected, its negative pole
It is connected with the emitter stage of audion VT3.
Wherein, the N pole of Zener diode D8 be connected with the colelctor electrode of audion VT4, its P pole and three
The emitter stage of pole pipe VT4 is collectively forming the outfan of constant-current drive circuit and is connected with LED group.Polarity
The negative pole of electric capacity C11 P pole with Zener diode D8 after resistance R22 is connected, its positive pole and three poles
The emitter stage of pipe VT3 is connected.One end of resistance R19 is connected with the emitter stage of audion VT3, it is another
One end is connected with the negative pole of polar capacitor C10.The P pole of diode D6 and the base stage phase of audion VT3
Connect, its N pole positive pole with polar capacitor C11 after resistance R17 is connected.
The positive pole of described polar capacitor C9 is connected with the non-same polarity of transformator T secondary inductance coil；Institute
The Same Name of Ends of the N pole and transformator T secondary inductance coil of stating diode D6 is connected.
During operation, input terminal voltage electric current can not only be filtered processing by the present invention, makes the voltage x current of input
More steady, and the intensity of the voltage x current after Filtering Processing of the present invention is adjusted, and makes the electromagnetic wave of electric current
Motion remain a constant speed state.Meanwhile, the present invention has stronger driving force, the driving force of the present invention
Improve about 60% than the driving force of existing LED power circuit, i.e. the present invention can be simultaneously to multiple
LED group provides stable driving electric current.
Present invention employs the integrated chip of high-precision L6569, this chip has that stability is strong, overtemperature protection,
The functions such as overcurrent protection, effectively raise the stability of the output electric current of the present invention.The present invention can have
In the service life of the prolongation LED of effect, the electricity of more than 50% can be saved simultaneously, thus meet people to LED
Lamp control system is in the demand of energy-conservation aspect.
According to above-described embodiment, can well realize the present invention.
Claims (6)
1. a constant-current driving formula cold light LED energy-saving electric power circuit, it is characterised in that main by controlling
Chip U2, transformator T, diode rectifier U1, respectively non-of the same name with transformator T secondary inductance coil
The constant-current drive circuit that end is connected with Same Name of Ends, negative pole is connected with the cathode output end of diode rectifier U1
Connect, polar capacitor C1 that positive pole is connected with the cathode output end of diode rectifier U1, negative pole and control
The CS pin of chip U2 is connected, positive pole RE pin with control chip U2 after inductance L1 is connected
Polar capacitor C5, one end is connected with the positive pole of polar capacitor C5, the other end and control chip U2
GND pin be connected after the resistance R9 of ground connection, the VCC pin being serially connected in control chip U2 is managed with VS-
Reference current correcting circuit between foot, is serially connected in the crystalline substance between control chip U2 and reference current correcting circuit
Brake tube triggers circuit, and the low-pass filter circuit group being serially connected between diode rectifier U1 and transformator T
Become；Described reference current correcting circuit is connected with low-pass filter circuit and thyristor gating circuit respectively.
A kind of constant-current driving formula cold light LED energy-saving electric power circuit the most according to claim 1, its
Being characterised by, described constant-current drive circuit is by audion VT3, audion VT4, and positive pole is after resistance R16
Be connected with the base stage of audion VT3, polar capacitor that negative pole is connected with the colelctor electrode of audion VT3
C9, N pole positive pole with polar capacitor C9 after resistance R18 is connected, P pole after resistance R20 with three
The diode D7 that the emitter stage of pole pipe VT3 is connected, one end is connected with the N pole of diode D7, another
The inductance L2 that is connected with the emitter stage of audion VT4 of end, positive pole after resistance R21 with audion VT4
Polar capacitor C10, the N pole and three that base stage is connected, negative pole is connected with the emitter stage of audion VT3
The colelctor electrode of pole pipe VT4 is connected, its P pole is collectively forming constant-current driving electricity with the emitter stage of audion VT4
The Zener diode D8 of the outfan on road, negative pole P with Zener diode D8 after resistance R22 are extremely connected
Connect, polar capacitor C11 that positive pole is connected with the emitter stage of audion VT3, one end is with audion VT3's
The resistance R19 that emitter stage is connected, the other end is connected with the negative pole of polar capacitor C10, and P pole with
The base stage of audion VT3 is connected, N pole positive pole with polar capacitor C11 after resistance R17 is connected
Diode D6 forms；The positive pole of described polar capacitor C9 and the non-same polarity of transformator T secondary inductance coil
It is connected；The N pole of described diode D6 is connected with the Same Name of Ends of transformator T secondary inductance coil.
A kind of constant-current driving formula cold light LED energy-saving electric power circuit the most according to claim 2, its
Being characterised by, described low-pass filter circuit is defeated with the positive pole of diode rectifier U1 by audion VT1, P pole
Go out the diode D1 that end is connected, N pole base stage with audion VT1 after adjustable resistance R2 is connected,
The polar capacitor that positive pole is connected with the P pole of diode D1, negative pole is connected with the base stage of audion VT1
After C2, P pole is connected with the positive pole of polar capacitor C2, N pole is connected with the colelctor electrode of audion VT1
The diode D3 of ground connection, one end is connected with the N pole of diode D1, the other end is sent out with audion VT1's
The resistance R3 that emitter-base bandgap grading is connected, and positive pole N pole with diode D1 after resistance R4 be connected, negative
The polar capacitor C3 composition that pole colelctor electrode with audion VT1 after resistance R5 is connected；Described audion
The base stage of VT1 is connected with reference current correcting circuit, and its colelctor electrode is connected with thyristor gating circuit.
A kind of constant-current driving formula cold light LED energy-saving electric power circuit the most according to claim 3, its
Be characterised by, described reference current correcting circuit by audion VT2, N pole after resistance R7 with control chip
Two poles that the VCC pin of U is connected, P pole emitter stage with audion VT2 after resistance R8 is connected
Pipe D2, positive pole is connected with the colelctor electrode of audion VT2, polar capacitor C4, the P pole warp of minus earth
After resistance R10, the base stage with audion VT2 is connected, N pole is connected with the VS pin of control chip U2
The diode D4 connect, and positive pole sequentially after resistance R12 and resistance R11 with the negative pole of polar capacitor C4
Be connected, negative pole is as the outfan of reference current correcting circuit the pole that is connected with thyristor gating circuit
Property electric capacity C6 composition；The N pole of described diode D4 is connected with the positive pole of polar capacitor C6；Described two
The N pole of pole pipe D2 is connected with the base stage of audion VT1.
A kind of constant-current driving formula cold light LED energy-saving electric power circuit the most according to claim 4, its
Being characterised by, described thyristor gating circuit is by field effect transistor MOS1, field effect transistor MOS2, one end and control
The resistance that LO pin is connected, the other end is connected with the grid of field effect transistor MOS2 of coremaking sheet U2
R13, negative pole grid with field effect transistor MOS2 after resistance R15 is connected, positive pole and audion VT1
The polar capacitor C8 that is connected of emitter stage, negative pole is connected with the grid of field effect transistor MOS1, positive pole warp
The polar capacitor C7 being connected with the HC pin of control chip U2 after resistance R6, one end and field effect transistor
The resistance R14 that the source electrode of MOS1 is connected, the other end is connected with the VS+ pin of control chip U2, with
And P pole is connected with the source electrode of field effect transistor MOS2, N pole is non-with the former limit inductance coil of transformator T
The diode D5 composition that Same Name of Ends is connected；The grounded drain of described field effect transistor MOS2, its grid and pole
The negative pole of property electric capacity C6 is connected, and its source electrode is connected with the source electrode of field effect transistor MOS1；Described field effect
The Same Name of Ends of the drain electrode of pipe MOS1 limit former with transformator T inductance coil respectively and the emitter stage of audion VT1
It is connected.
A kind of constant-current driving formula cold light LED energy-saving electric power circuit the most according to claim 5, its
Being characterised by, described control chip U2 is the integrated chip of L6569.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370813.9A CN105873286A (en) | 2016-05-30 | 2016-05-30 | Energy-saving power circuit for constant-current drive type cold light LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370813.9A CN105873286A (en) | 2016-05-30 | 2016-05-30 | Energy-saving power circuit for constant-current drive type cold light LED |
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| Publication Number | Publication Date |
|---|---|
| CN105873286A true CN105873286A (en) | 2016-08-17 |
Family
ID=56642721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610370813.9A Pending CN105873286A (en) | 2016-05-30 | 2016-05-30 | Energy-saving power circuit for constant-current drive type cold light LED |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231740A (en) * | 2016-10-11 | 2016-12-14 | 四川万康节能环保科技有限公司 | A kind of LED flash band voltage adjusting type energy-saving control circuit |
| CN106304506A (en) * | 2016-10-11 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of LED flash band Overvoltage suppressing type energy-saving control circuit |
| CN106332370A (en) * | 2016-10-11 | 2017-01-11 | 四川万康节能环保科技有限公司 | Voltage stabilizing energy-saving control circuit for LED flash light string |
| CN106332367A (en) * | 2016-10-11 | 2017-01-11 | 四川万康节能环保科技有限公司 | LED flashlight strip in energy-saving control circuit |
| CN106332368A (en) * | 2016-10-11 | 2017-01-11 | 四川万康节能环保科技有限公司 | LED flashlight strip in operation-amplification energy-saving control circuit |
| CN106455213A (en) * | 2016-10-11 | 2017-02-22 | 四川万康节能环保科技有限公司 | Overvoltage protection type energy-saving control circuit for LED flashlight strip |
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2016
- 2016-05-30 CN CN201610370813.9A patent/CN105873286A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231740A (en) * | 2016-10-11 | 2016-12-14 | 四川万康节能环保科技有限公司 | A kind of LED flash band voltage adjusting type energy-saving control circuit |
| CN106304506A (en) * | 2016-10-11 | 2017-01-04 | 四川万康节能环保科技有限公司 | A kind of LED flash band Overvoltage suppressing type energy-saving control circuit |
| CN106332370A (en) * | 2016-10-11 | 2017-01-11 | 四川万康节能环保科技有限公司 | Voltage stabilizing energy-saving control circuit for LED flash light string |
| CN106332367A (en) * | 2016-10-11 | 2017-01-11 | 四川万康节能环保科技有限公司 | LED flashlight strip in energy-saving control circuit |
| CN106332368A (en) * | 2016-10-11 | 2017-01-11 | 四川万康节能环保科技有限公司 | LED flashlight strip in operation-amplification energy-saving control circuit |
| CN106455213A (en) * | 2016-10-11 | 2017-02-22 | 四川万康节能环保科技有限公司 | Overvoltage protection type energy-saving control circuit for LED flashlight strip |
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Application publication date: 20160817 |
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| WD01 | Invention patent application deemed withdrawn after publication |