CN105873293A - Energy-saving power circuit for high-impedance amplification type cold light LED - Google Patents
Energy-saving power circuit for high-impedance amplification type cold light LED Download PDFInfo
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- CN105873293A CN105873293A CN201610380051.0A CN201610380051A CN105873293A CN 105873293 A CN105873293 A CN 105873293A CN 201610380051 A CN201610380051 A CN 201610380051A CN 105873293 A CN105873293 A CN 105873293A
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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 high-impedance amplification 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 polar capacitor C9, a high-impedance amplification circuit and a low-pass filtering circuit, wherein the polar capacitor C9 is connected between the non-dotted terminal and the dotted terminal of a transformer T secondary side induction coil in series, the high-impedance amplification circuit is connected between the reference current correcting circuit and the thyristor trigger circuit in series, 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 a kind of high impedance amplifying type cold light LED joint
Can 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 high impedance amplifying type cold light LED energy-saving electric power circuit.
The present invention is achieved through the following technical solutions: a kind of high impedance amplifying type cold light LED electricity-saving
Source circuit, mainly by control chip U2, transformator T, diode rectifier U1, negative pole and diode rectification
The pole that the cathode output end of device U1 is connected, positive pole is connected with the cathode output end of diode rectifier U1
Property electric capacity C1, negative pole is connected with the CS pin of control chip U2, positive pole after inductance L1 with control core
The polar capacitor C5 that the RE pin of sheet U2 is connected, one end is connected with the positive pole of polar capacitor C5, separately
One end be connected with the GND pin of control chip U2 after the resistance R9 of ground connection, be serially connected in transformator T secondary
Polar capacitor C9 between non-same polarity and the Same Name of Ends of inductance coil, is serially connected in the VCC of control chip U2
Reference current correcting circuit between pin and VS-pin, the IGBT group being connected with control chip U2
Circuit, the high impedance amplifying circuit being serially connected between reference current correcting circuit and thyristor gating circuit, with
And the low-pass filter circuit composition being serially connected between diode rectifier U1 and transformator T；Described reference current
Correcting circuit is connected with low-pass filter circuit.
Described high impedance amplifying circuit is by field effect transistor MOS3, audion VT3, audion VT4, one end
Be connected with the grid of field effect transistor MOS3, the other end as high impedance amplifying circuit input and and base
The inductance L2 that quasi-current correction circuit is connected, positive pole is connected with the grid of field effect transistor MOS3, negative pole
Polar capacitor C11, the P pole of ground connection negative pole with polar capacitor C11 after resistance R18 is connected, N pole
The diode D7 being sequentially connected through resistance R24 base stage with audion VT4 after resistance R25, one end
Be connected with the source electrode of field effect transistor MOS3, resistance that the other end is connected with the emitter stage of audion VT3
R20, negative pole colelctor electrode with audion VT3 after resistance R21 is connected, positive pole after resistance R22 with
The polar capacitor C13 that the base stage of audion VT4 is connected, one end is connected with the base stage of audion VT3,
The transmitting of the adjustable resistance R23 that the other end is connected with the base stage of audion VT4, one end and audion VT4
Pole is connected, the resistance R28 of other end ground connection, and negative pole is connected with the grid of field effect transistor MOS3, just
The polar capacitor that pole is sequentially connected with the drain electrode of field effect transistor MOS3 after resistance R17 through resistance R16
C10, P pole is connected with the junction point of resistance R16 with resistance R17, N pole is imitated with field after resistance R19
Should the diode D6 that is connected of the drain electrode of pipe MOS3, negative pole after resistance R26 with the N pole of diode D6
Be connected, polar capacitor C12 that positive pole is connected with audion VT4 base stage after resistance R27, and P
Pole is connected with the positive pole of polar capacitor C12, N pole after resistance R29 with the colelctor electrode phase of audion VT4
The diode D8 composition connected；The minus earth of described polar capacitor C13；The P pole of described diode D8
As the outfan of high impedance amplifying circuit and it is connected with thyristor gating circuit.
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
The polar capacitor C6 composition that pole is connected with the grid of field effect transistor MOS3 after inductance L2；Described two poles
The N pole of pipe D4 is connected with the positive pole of polar capacitor C6；The N pole of described diode D2 and audion
The base stage of VT1 is connected.
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 diode
The P pole of D8 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 enable the invention to export stable operating current, it is ensured that stablizing of LED brightness
Property.
(2) 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.
(3) 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 high impedance amplifying 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, polar capacitor C9, inductance L1, high impedance amplifying circuit, IGCT
Trigger circuit, reference current correcting 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.Polar capacitor C9 is serially connected in the non-same polarity of transformator T secondary inductance coil with of the same name
Between end.Reference current correcting circuit is serially connected between the VCC pin of control chip U2 and VS-pin.
Thyristor gating circuit is connected with control chip U2.High impedance amplifying circuit is serially connected in reference current correction electricity
Between road and thyristor gating circuit.Low-pass filter circuit be serially connected in diode rectifier U1 and transformator T it
Between.
Described reference current correcting circuit is connected with low-pass filter circuit.The secondary inductance of described transformator T
The Same Name of Ends of coil is connected with LED group respectively with non-same polarity.Described diode rectifier U1's is defeated
Enter end to be 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 warp
After inductance L2, the grid with field effect transistor MOS3 is connected.The N pole of described diode D4 and polar capacitor
The positive pole of C6 is connected；The N pole of described diode D2 is connected with the base stage of audion VT1.
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 P pole of diode D8, 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 transformation
The Same Name of Ends of device T former limit inductance coil is connected with the emitter stage of audion VT1.
As in figure 2 it is shown, described high impedance amplifying circuit is by field effect transistor MOS3, audion VT3, three poles
Pipe VT4, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, electricity
Resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, resistance R28, electricity
Resistance R29, polar capacitor C10, polar capacitor C11, polar capacitor C12, polar capacitor C13, diode
D6, diode D7, diode D8, and inductance L2 form.
During connection, one end of inductance L2 is connected with the grid of field effect transistor MOS3, its other end is as height
The input of impedance amplifying circuit is also connected with reference current correcting circuit.The positive pole of polar capacitor C11 with
The grid of field effect transistor MOS3 is connected, its minus earth.The P pole of diode D7 is after resistance R18
Be connected with the negative pole of polar capacitor C11, its N pole sequentially after resistance R24 and resistance R25 with audion
The base stage of VT4 is connected.One end of resistance R20 is connected with the source electrode of field effect transistor MOS3, its another
End is connected with the emitter stage of audion VT3.
Wherein, the negative pole of polar capacitor C13 colelctor electrode with audion VT3 after resistance R21 be connected,
Its positive pole base stage with audion VT4 after resistance R22 is connected.One end of adjustable resistance R23 and three poles
The base stage of pipe VT3 is connected, its other end is connected with the base stage of audion VT4.One end of resistance R28
Be connected with the emitter stage of audion VT4, its other end ground connection.The negative pole of polar capacitor C10 and field effect
The grid of pipe MOS3 is connected, its positive pole sequentially after resistance R16 and resistance R17 with field effect transistor MOS3
Drain electrode be connected.
Meanwhile, the P pole of diode D6 be connected with the junction point of resistance R16 with resistance R17, its N pole
After resistance R19, the drain electrode with field effect transistor MOS3 is connected.The negative pole of polar capacitor C12 is through resistance
After R26 the N pole with diode D6 be connected, its positive pole after resistance R27 with audion VT4 base stage phase
Connect.The P pole of diode D8 is connected with the positive pole of polar capacitor C12, its N pole is after resistance R29
It is connected with the colelctor electrode of audion VT4.The minus earth of described polar capacitor C13；Described diode
The P pole of D8 as the outfan of high impedance amplifying circuit and is connected with thyristor gating circuit.
During operation, input terminal voltage electric current can be filtered processing by the present invention, makes the voltage x current of input more
Steadily, the intensity of the voltage x current after Filtering Processing the most of the present invention is adjusted, and makes the electromagnetic wave of electric current
Motion remains a constant speed state, thus enables the invention to export stable operating current, it is ensured that LED's etc. is bright
The stability of degree.
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 high impedance amplifying type cold light LED energy-saving electric power circuit, it is characterised in that main by controlling
Coremaking sheet U2, transformator T, diode rectifier U1, negative pole exports with the positive pole of diode rectifier U1
The polar capacitor C1 that end is connected, positive pole is connected with the cathode output end of diode rectifier U1, negative pole
Be connected with the CS pin of control chip U2, positive pole after inductance L1 with the RE pin of control chip U2
The polar capacitor C5 being connected, one end is connected with the positive pole of polar capacitor C5, the other end and control chip
The GND pin of U2 be connected after the resistance R9 of ground connection, be serially connected in transformator T secondary inductance coil non-with
Polar capacitor C9 between name end and Same Name of Ends, is serially connected in VCC pin and the VS-pin of control chip U2
Between reference current correcting circuit, the thyristor gating circuit being connected with control chip U2, be serially connected in base
High impedance amplifying circuit between quasi-current correction circuit and thyristor gating circuit, and it is serially connected in diode
Low-pass filter circuit composition between commutator U1 and transformator T；Described reference current correcting circuit and low pass
Filter circuit is connected.
A kind of high impedance amplifying type cold light LED energy-saving electric power circuit the most according to claim 1,
It is characterized in that, described high impedance amplifying circuit by field effect transistor MOS3, audion VT3, audion VT4,
One end is connected with the grid of field effect transistor MOS3, the other end as high impedance amplifying circuit input also
The inductance L2 being connected with reference current correcting circuit, positive pole is connected with the grid of field effect transistor MOS3,
Polar capacitor C11, the P pole of minus earth negative pole with polar capacitor C11 after resistance R18 is connected, N
The diode D7 that pole is sequentially connected through resistance R24 base stage with audion VT4 after resistance R25, one
The electricity that end is connected with the source electrode of field effect transistor MOS3, the other end is connected with the emitter stage of audion VT3
Resistance R20, negative pole colelctor electrode with audion VT3 after resistance R21 is connected, positive pole is after resistance R22
The polar capacitor C13 being connected with the base stage of audion VT4, one end is connected with the base stage of audion VT3,
The transmitting of the adjustable resistance R23 that the other end is connected with the base stage of audion VT4, one end and audion VT4
Pole is connected, the resistance R28 of other end ground connection, and negative pole is connected with the grid of field effect transistor MOS3, just
The polar capacitor that pole is sequentially connected with the drain electrode of field effect transistor MOS3 after resistance R17 through resistance R16
C10, P pole is connected with the junction point of resistance R16 with resistance R17, N pole is imitated with field after resistance R19
Should the diode D6 that is connected of the drain electrode of pipe MOS3, negative pole after resistance R26 with the N pole of diode D6
Be connected, polar capacitor C12 that positive pole is connected with audion VT4 base stage after resistance R27, and P
Pole is connected with the positive pole of polar capacitor C12, N pole after resistance R29 with the colelctor electrode phase of audion VT4
The diode D8 composition connected；The minus earth of described polar capacitor C13；The P pole of described diode D8
As the outfan of high impedance amplifying circuit and it is connected with thyristor gating circuit.
A kind of high impedance amplifying type cold light LED energy-saving electric power circuit the most according to claim 2,
It is characterized in that, described low-pass filter circuit is by the positive pole of audion VT1, P pole Yu diode rectifier U1
The diode D1 that outfan 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 high impedance amplifying type cold light LED energy-saving electric power circuit the most according to claim 3,
It is characterized in that, described reference current correcting circuit by audion VT2, N pole after resistance R7 with control core
The VCC pin of sheet U is connected, P pole emitter stage with audion VT2 after resistance R8 is connected two
Pole pipe D2, positive pole is connected with the colelctor electrode of audion VT2, polar capacitor C4, the P pole of minus earth
After resistance R10 the base stage with audion VT2 be connected, the VS pin phase of N pole and control chip U2
The diode D4 connected, and positive pole sequentially negative with polar capacitor C4 after resistance R12 and resistance R11
The polar capacitor C6 group that pole is connected, negative pole is connected with the grid of field effect transistor MOS3 after inductance L2
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.
A kind of high impedance amplifying type cold light LED energy-saving electric power circuit the most according to claim 4,
It is characterized in that, described thyristor gating circuit by field effect transistor MOS1, field effect transistor MOS2, one end with
The resistance that LO pin is connected, the other end is connected with the grid of field effect transistor MOS2 of control chip 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 two
The P pole of pole pipe D8 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 high impedance amplifying type cold light LED energy-saving electric power circuit the most according to claim 5,
It is characterized in that, described control chip U2 is the integrated chip of L6569.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610380051.0A CN105873293A (en) | 2016-05-30 | 2016-05-30 | Energy-saving power circuit for high-impedance amplification type cold light LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610380051.0A CN105873293A (en) | 2016-05-30 | 2016-05-30 | Energy-saving power circuit for high-impedance amplification type cold light LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105873293A true CN105873293A (en) | 2016-08-17 |
Family
ID=56675634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610380051.0A Pending CN105873293A (en) | 2016-05-30 | 2016-05-30 | Energy-saving power circuit for high-impedance amplification type cold light LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105873293A (en) |
-
2016
- 2016-05-30 CN CN201610380051.0A patent/CN105873293A/en active Pending
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