CN105934036A - Light-controlled LED (Light-Emitting Diode) energy-saving control system based on high-resistance filter circuit - Google Patents
Light-controlled LED (Light-Emitting Diode) energy-saving control system based on high-resistance filter circuit Download PDFInfo
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- CN105934036A CN105934036A CN201610407939.9A CN201610407939A CN105934036A CN 105934036 A CN105934036 A CN 105934036A CN 201610407939 A CN201610407939 A CN 201610407939A CN 105934036 A CN105934036 A CN 105934036A
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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]
- H05B45/10—Controlling the intensity of the light
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
This invention discloses a light-controlled LED energy-saving control system based on a high-resistance filter circuit. The control system is mainly composed of a control chip U1, a brightness sensor, a triode VT1, a voltage-stabilizing diode D2, a signal receiving circuit, a polar capacitor C4, a high-resistance filter circuit connected between the signal receiving circuit and an ANT pin of the control chip U1 in series, a current-regulating circuit connected with an emitting electrode of the triode VT1 and the control chip U1, and a linear drive circuit connected with the current-regulating circuit. Through adopting the control system provided by this invention, the interfering signal in the signals outputted by the brightness sensor can be cleared, so that the signals outputted by the brightness sensor are more accurate; thus, the accuracy for processing the signals of the control system is improved; simultaneously, the current intensity can be effectively regulated by the control system; and thus, the steady current can be outputted by the control system.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of light-operated LED based on high resistant filter circuit joint
Can control system.
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.People's many employings acoustic control, light-operated LED in life
Control system realizes the open and close to LED.Light-operated LED control system can be according to LED because of it
Lamp uses the brightness of environment to control the open and close of LED, and can effectively meet people to LED
In the requirement of energy-conservation aspect, and enjoy the favor of people.But, existing light-operated LED control system exists
Luminance signal is processed inaccurate problem, causes it can not control accurately according to the intensity of illumination of environment
The open and close of LED, thus cannot well meet people's requirement at energy-conservation aspect.Meanwhile, existing
Some light-operated LED control systems there is also the problem that output electric current is unstable, causes LED luminance unstable,
Thus have impact on the service life of LED.
Therefore it provides one can improve luminance signal processes accuracy, can ensure that again the electric current that output is stable
Light-operated LED control system be the task of top priority.
Summary of the invention
It is an object of the invention to overcome light-operated LED control system of the prior art to exist to luminance signal
Manage inaccurate, there is the defect that output electric current is unstable simultaneously, it is provided that a kind of based on high resistant filter circuit
Light-operated LED energy-saving control system.
The present invention is achieved through the following technical solutions: a kind of light-operated LED based on high resistant filter circuit saves
Energy control system, mainly by control chip U1, luminance sensor, triode VT1, N pole and control chip
The voltage stabilizing that the VDD pin of U1 is connected, P pole base stage with triode VT1 after resistance R3 is connected
Diode D2, positive pole CTH pin with control chip U1 after resistance R4 is connected, minus earth
Polar capacitor C4, the signal receiving circuit being connected with luminance sensor, it is serially connected in signal receiving circuit and control
High resistant filter circuit between the ANT pin of coremaking sheet U1, respectively with emitter stage and the control of triode VT1
The matrix current adjustment circuit that coremaking sheet U1 is connected, and the linear drive circuit being connected with matrix current adjustment circuit
Composition；The grounded collector of described triode VT1；The VSS pin of described control chip U1 and VDD
Pin is connected, and its DO pin is then connected with SHUT pin.
Described high resistant filtered electrical routing amplifier P2, triode VT5, triode VT6, negative pole is through resistance
After 17, the base stage with triode VT5 is connected, positive pole as the input of high resistant filter circuit and connects with signal
Receiving the polar capacitor C11 that circuit is connected, negative pole is connected with the base stage of triode VT6, positive electrode resistance R21
Polar capacitor C12, the N pole that emitter stage with triode VT5 is connected afterwards after resistance R23 with amplifier
The diode that the positive pole of P2 is connected, P pole emitter stage with triode VT5 after resistance R22 is connected
D6, positive pole P pole with diode D6 after resistance R16 is connected, the polar capacitor C10 of minus earth,
The polar capacitor that negative pole is connected with the negative pole of amplifier P2, positive pole is connected with the emitter stage of triode VT6
C13, P pole colelctor electrode with triode VT6 after resistance R24 is connected, N pole is sequentially through resistance R19
Diode D7, the P pole adjustable resistance R25 being connected with colelctor electrode with triode VT5 after resistance R20
Be connected with the P pole of diode D7 afterwards, diode D8 that N pole is connected with the output of amplifier P2,
Negative pole P pole with diode D8 after resistance R26 is connected, positive pole is connected with the N pole of diode D7
Polar capacitor C14, and one end is connected with the tie point of resistance R19 with resistance R20, another termination
The resistance R18 composition on ground；The output of described amplifier P2 as high resistant filter circuit output and with control
The ANT pin of coremaking sheet U1 is connected.
Described signal receiving circuit by amplifier P1, negative pole is connected with the positive pole of amplifier P1, positive pole with
The polar capacitor C1 that luminance sensor is connected, positive pole negative pole with amplifier P1 after resistance R1 is connected,
Polar capacitor C2, the P pole of minus earth is connected with the positive pole of polar capacitor C1, N pole is after resistance R2
The diode D1 being connected with the output of amplifier P1, and positive pole is connected with the output of amplifier P1
Connect, polar capacitor C3 that negative pole is connected with the positive pole of polar capacitor C11 composition.
Described matrix current adjustment circuit is by the REF of triode VT2, triode VT3, positive pole and control chip U1
Polar capacitor C5, the P pole that pin is connected, negative pole is connected with the base stage of triode VT2 is through resistance R8
Afterwards the positive pole with polar capacitor C5 be connected, N pole after adjustable resistance R9 with the colelctor electrode of triode VT3
The diode D3 being connected, one end is connected with the CAGC pin of control chip U1, the other end and three poles
The resistance R7 that the emitter stage of pipe VT2 is connected, one end is connected with the colelctor electrode of triode VT2, another
The inductance L that end is connected with the base stage of triode VT3, and positive pole is sequentially after resistance R6 and resistance R5
Be connected with the emitter stage of triode VT1, polar capacitor that negative pole is connected with the base stage of triode VT3
C6 forms；The base stage of described triode VT3 is connected with the SHUT pin of control chip U；Described three
The emitter stage of pole pipe VT3 and the N pole of diode D3 are collectively forming output and the line of matrix current adjustment circuit
Property drive circuit is connected.
Described linear drive circuit is by driving chip U2, triode VT4, and FET MOS, P are the most suitable
Secondary be connected through resistance R13 CS pin with driving chip U2 after resistance R10, N pole is through resistance R14
The base stage of the Zener diode D4 that the source electrode with FET MOS is connected afterwards, negative pole and triode VT4
Be connected, polar capacitor C8 that positive pole is connected with the OUT pin of driving chip U2, positive pole is through resistance
After R11, the emitter stage with triode VT3 is connected, FB with driving chip U2 manages after negative pole resistance R12
Polar capacitor C7, the P pole that pin is connected is connected with the colelctor electrode of triode VT4, N pole and driving chip
The diode D5 that the FB pin of U2 is connected, and positive pole after resistance R15 with FET MOS's
The polar capacitor C9 composition of ground connection after drain electrode is connected, negative pole is connected with the N pole of diode D5；Described
The VCC pin of driving chip U2 is connected with the emitter stage of triode VT3, its GND pin ground connection；
The emitter stage of described triode VT4 is connected with the grid of FET MOS；Described resistance R13 and electricity
The tie point of resistance R10 is connected with the N pole of diode D3；The N pole of described Zener diode D4 and pole
The negative pole of property electric capacity C9 is collectively forming the output of linear drive circuit.
For the practical effect of the present invention, described control chip U1 the most preferentially uses MICRF007 collection
Chip is become to realize；The most described driving chip U2 the most preferentially have employed and realizes for the integrated chip of AP3766.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the interference signal in the signal of luminance sensor output can be eliminated by the present invention, makes brightness pass
The signal of sensor output is more accurate, thus improves the present invention accuracy to signal transacting, it is ensured that this
The bright open and close that can control LED according to the intensity of illumination in range accurately, the most satisfied
People requirements at energy-conservation aspect；The intensity of electric current can effectively be adjusted by the present invention simultaneously, thus
Ensure that the present invention can export stable electric current, make the brightness stability of LED, effective prolongation LED
Service life.
(2) input signal can be filtered by the present invention, effectively eliminates the disturbance letter scurrying in luminance signal
Number ripple, makes signal frequency smoother, ensures that the present invention accuracy to signal transacting.
(3) present invention employs the integrated chip of AP3766 and be used as driving chip, this chip performance is stable,
There is the function such as overtemperature protection, overcurrent protection simultaneously, thus enable the invention to export stable driving electric current,
Ensure that the stability of LED brightness.
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 resistant filter 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 U1, luminance sensor, triode VT1, electricity
Resistance R3, resistance R4, polar capacitor C4, Zener diode D2, high resistant filter circuit, signal receiving circuit,
Matrix current adjustment circuit, and linear drive circuit composition.
During enforcement, the N pole of Zener diode D2 is connected with the VDD pin of control chip U1, its P
Pole base stage with triode VT1 after resistance R3 is connected.The positive pole of polar capacitor C4 is after resistance R4
Be connected with the CTH pin of control chip U1, its minus earth.Signal receiving circuit and luminance sensor
It is connected.High resistant filter circuit is serially connected between the ANT pin of signal receiving circuit and control chip U1.
Matrix current adjustment circuit is connected with emitter stage and the control chip U1 of triode VT1 respectively.Linear Driving electricity
Road is connected with matrix current adjustment circuit.The grounded collector of described triode VT1；Described control chip U1
VSS pin be connected with VDD pin, its DO pin is then connected with SHUT pin；Described
The output of linear drive circuit is then connected with LED group；The N pole of described Zener diode D2 is with outer
Portion's 12V DC voltage is connected.
Wherein, described signal receiving circuit by amplifier P1, resistance R1, resistance R2, polar capacitor C1,
Polar capacitor C2, polar capacitor C3, and diode D1 form.
During connection, the negative pole of polar capacitor C1 is connected with the positive pole of amplifier P1, its positive pole passes with brightness
Sensor is connected.The positive pole of polar capacitor C2 negative pole with amplifier P1 after resistance R1 is connected, it is born
Pole ground connection.The P pole of diode D1 is connected with the positive pole of polar capacitor C1, its N pole is after resistance R2
It is connected with the output of amplifier P1.The positive pole of polar capacitor C3 is connected with the output of amplifier P1,
Its negative pole is connected with the positive pole of polar capacitor C11.
Further, described matrix current adjustment circuit is by triode VT2, triode VT3, resistance R5, electricity
Resistance R6, resistance R7, resistance R8, adjustable resistance R9, inductance L, polar capacitor C5, polar capacitor C6,
And diode D3 composition.
During connection, the positive pole of polar capacitor C5 is connected with the REF pin of control chip U1, its negative pole
It is connected with the base stage of triode VT2.The P pole of diode D3 after resistance R8 with polar capacitor C5's
Positive pole is connected, its N pole colelctor electrode with triode VT3 after adjustable resistance R9 is connected.Resistance R7
One end be connected with the CAGC pin of control chip U1, the emitter stage of its other end and triode VT2
It is connected.One end of inductance L is connected with the colelctor electrode of triode VT2, its other end and triode VT3
Base stage be connected.The positive pole of polar capacitor C6 sequentially after resistance R6 and resistance R5 with triode VT1
Emitter stage be connected, its negative pole is connected with the base stage of triode VT3.
The base stage of described triode VT3 is connected with the SHUT pin of control chip U；Described triode
The N pole of the emitter stage of VT3 and diode D3 be collectively forming matrix current adjustment circuit output and with linearly drive
Dynamic circuit is connected.
Further, described linear drive circuit is by driving chip U2, triode VT4, FET
MOS, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, polarity
Electric capacity C7, polar capacitor C8, polar capacitor C9, Zener diode D4, and diode D5 form.
During connection, the P pole of Zener diode D4 sequentially after resistance R13 and resistance R10 with driving chip
The CS pin of U2 is connected, its N pole source electrode with FET MOS after resistance R14 is connected.
The negative pole of polar capacitor C8 is connected with the base stage of triode VT4, the OUT of its positive pole and driving chip U2
Pin is connected.The positive pole of polar capacitor C7 emitter stage with triode VT3 after resistance R11 is connected,
It is connected with the FB pin of driving chip U2 after its negative pole resistance R12.The P pole of diode D5 and three poles
The colelctor electrode of pipe VT4 is connected, its N pole is connected with the FB pin of driving chip U2.Polar capacitor
The drain electrode with FET MOS after resistance R15 of the positive pole of C9 is connected, its negative pole and diode D5
N pole be connected after ground connection.
The VCC pin of described driving chip U2 is connected with the emitter stage of triode VT3, and its GND manages
Pin ground connection；The emitter stage of described triode VT4 is connected with the grid of FET MOS；Described resistance
The tie point of R13 and resistance R10 is connected with the N pole of diode D3；The N of described Zener diode D4
Pole is collectively forming the output of linear drive circuit and is connected with LED group with the negative pole of polar capacitor C9.
As in figure 2 it is shown, described high resistant filtered electrical routing amplifier P2, triode VT5, triode VT6,
Resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22,
Resistance R23, resistance R24, adjustable resistance R25, resistance R26, polar capacitor C10, polar capacitor C11,
Polar capacitor C12, polar capacitor C13, polar capacitor C14, diode D6, diode D7, and two
Pole pipe D8 forms.
During connection, the negative pole of polar capacitor C11 base stage with triode VT5 after resistance 17 is connected,
Its positive pole as the input of high resistant filter circuit and is connected with signal receiving circuit.Polar capacitor C12's
Negative pole is connected with the base stage of triode VT6, after its positive electrode resistance R21 with the emitter stage phase of triode VT5
Connect.The N pole of diode D6 positive pole with amplifier P2 after resistance R23 is connected, its P pole is through electricity
It is connected with the emitter stage of triode VT5 after resistance R22.The positive pole of polar capacitor C10 after resistance R16 with
The P pole of diode D6 is connected, its minus earth.
Meanwhile, the negative pole of polar capacitor C13 be connected with the negative pole of amplifier P2, its positive pole and triode
The emitter stage of VT6 is connected.The P pole of diode D7 after resistance R24 with the colelctor electrode of triode VT6
Be connected, its N pole is sequentially connected through resistance R19 colelctor electrode with triode VT5 after resistance R20.
Be connected with the P pole of diode D7 after the P pole adjustable resistance R25 of diode D8, its N pole and amplification
The output of device P2 is connected.The negative pole of polar capacitor C14 after resistance R26 with the P pole of diode D8
Be connected, its positive pole is connected with the N pole of diode D7.One end of resistance R18 and resistance R19 and electricity
The tie point of resistance R20 is connected, its other end ground connection.The output of described amplifier P2 filters as high resistant
The output of circuit is also connected with the ANT pin of control chip U1.
During operation, the interference signal in the signal of luminance sensor output can be eliminated by the present invention, and
Input signal can be filtered by the present invention, effectively eliminates the disturbing signal ripple scurried in luminance signal, makes
Signal frequency is smoother, thus improves the present invention accuracy to signal transacting, it is ensured that LED is opened
Accuracy with closing, preferably achieves people's requirement at energy-conservation aspect.
Meanwhile, present invention employs the integrated chip of AP3766 and be used as driving chip U2, this chip performance is steady
Fixed, there is the function such as overtemperature protection, overcurrent protection simultaneously, thus enable the invention to export stable driving electricity
Stream, it is ensured that the stability of LED brightness.The intensity of electric current can effectively be adjusted by the present invention, from
And ensure that the present invention can export stable electric current, make the brightness stability of LED, effectively extend LED
Service life.
During enforcement, for the practical effect of the present invention, described control chip U1 the most preferentially uses
The integrated chip of MICRF007 realizes.Brightness signal value is prestored, this control chip in this control chip U1
U1 can obtain luminance signal after being analyzed processing by the ambient light signal being gathered luminance sensor
Data value, when the data value signal that control chip U1 obtains is less than the data value of its internal memory, output controls electricity
Stream, now, triode VT3 must conduct, and LED group obtains electric being lit.Otherwise, work as control chip
The data value signal that U1 obtains does not exports control electric current, now, triode when being more than the data value of its internal memory
VT3 dead electricity disconnects, and LED group is not lit.
According to above-described embodiment, can well realize the present invention.
Claims (7)
1. a light-operated LED energy-saving control system based on high resistant filter circuit, it is characterized in that, main by control chip U1, luminance sensor, triode VT1, N pole is connected with the VDD pin of control chip U1, the Zener diode D2 that P pole base stage with triode VT1 after resistance R3 is connected, positive pole CTH pin with control chip U1 after resistance R4 is connected, the polar capacitor C4 of minus earth, the signal receiving circuit being connected with luminance sensor, it is serially connected in the high resistant filter circuit between the ANT pin of signal receiving circuit and control chip U1, the matrix current adjustment circuit being connected with emitter stage and the control chip U1 of triode VT1 respectively, and the linear drive circuit composition being connected with matrix current adjustment circuit；The grounded collector of described triode VT1；The VSS pin of described control chip U1 is connected with VDD pin, and its DO pin is then connected with SHUT pin.
nullA kind of light-operated LED energy-saving control system based on high resistant filter circuit the most according to claim 1，It is characterized in that，Described high resistant filtered electrical routing amplifier P2，Triode VT5，Triode VT6，Negative pole base stage with triode VT5 after resistance 17 is connected、Positive pole is as the input of high resistant filter circuit the polar capacitor C11 that is connected with signal receiving circuit，Negative pole is connected with the base stage of triode VT6、The polar capacitor C12 that after positive electrode resistance R21, emitter stage with triode VT5 is connected，N pole positive pole with amplifier P2 after resistance R23 is connected、The diode D6 that P pole emitter stage with triode VT5 after resistance R22 is connected，Positive pole P pole with diode D6 after resistance R16 is connected、The polar capacitor C10 of minus earth，Negative pole is connected with the negative pole of amplifier P2、The polar capacitor C13 that positive pole is connected with the emitter stage of triode VT6，P pole colelctor electrode with triode VT6 after resistance R24 is connected、The diode D7 that N pole is sequentially connected through resistance R19 colelctor electrode with triode VT5 after resistance R20，After the adjustable resistance R25 of P pole, the P pole with diode D7 is connected、The diode D8 that N pole is connected with the output of amplifier P2，Negative pole P pole with diode D8 after resistance R26 is connected、The polar capacitor C14 that positive pole is connected with the N pole of diode D7，And one end is connected with the tie point of resistance R19 with resistance R20、The resistance R18 composition of other end ground connection；The output of described amplifier P2 as the output of high resistant filter circuit and is connected with the ANT pin of control chip U1.
A kind of light-operated LED energy-saving control system based on high resistant filter circuit the most according to claim 2, it is characterized in that, described signal receiving circuit is by amplifier P1, negative pole is connected with the positive pole of amplifier P1, the polar capacitor C1 that positive pole is connected with luminance sensor, positive pole negative pole with amplifier P1 after resistance R1 is connected, the polar capacitor C2 of minus earth, P pole is connected with the positive pole of polar capacitor C1, the diode D1 that N pole output with amplifier P1 after resistance R2 is connected, and positive pole is connected with the output of amplifier P1, the polar capacitor C3 composition that negative pole is connected with the positive pole of polar capacitor C11.
nullA kind of light-operated LED energy-saving control system based on high resistant filter circuit the most according to claim 3，It is characterized in that，Described matrix current adjustment circuit is by triode VT2，Triode VT3，Positive pole is connected with the REF pin of control chip U1、The polar capacitor C5 that negative pole is connected with the base stage of triode VT2，P pole positive pole with polar capacitor C5 after resistance R8 is connected、The diode D3 that N pole colelctor electrode with triode VT3 after adjustable resistance R9 is connected，One end is connected with the CAGC pin of control chip U1、The resistance R7 that the other end is connected with the emitter stage of triode VT2，One end is connected with the colelctor electrode of triode VT2、The inductance L that the other end is connected with the base stage of triode VT3，And positive pole is sequentially connected through resistance R6 emitter stage with triode VT1 after resistance R5、The polar capacitor C6 composition that negative pole is connected with the base stage of triode VT3；The base stage of described triode VT3 is connected with the SHUT pin of control chip U；The emitter stage of described triode VT3 is collectively forming the output of matrix current adjustment circuit with the N pole of diode D3 and is connected with linear drive circuit.
nullA kind of light-operated LED energy-saving control system based on high resistant filter circuit the most according to claim 4，It is characterized in that，Described linear drive circuit is by driving chip U2，Triode VT4，FET MOS，P pole is sequentially connected through resistance R13 CS pin with driving chip U2 after resistance R10、The Zener diode D4 that N pole source electrode with FET MOS after resistance R14 is connected，Negative pole is connected with the base stage of triode VT4、The polar capacitor C8 that positive pole is connected with the OUT pin of driving chip U2，Positive pole emitter stage with triode VT3 after resistance R11 is connected、The polar capacitor C7 being connected with the FB pin of driving chip U2 after negative pole resistance R12，P pole is connected with the colelctor electrode of triode VT4、The diode D5 that N pole is connected with the FB pin of driving chip U2，And positive pole drain electrode with FET MOS after resistance R15 is connected、Negative pole be connected with the N pole of diode D5 after ground connection polar capacitor C9 composition；The VCC pin of described driving chip U2 is connected with the emitter stage of triode VT3, its GND pin ground connection；The emitter stage of described triode VT4 is connected with the grid of FET MOS；The tie point of described resistance R13 and resistance R10 is connected with the N pole of diode D3；The N pole of described Zener diode D4 and the negative pole of polar capacitor C9 are collectively forming the output of linear drive circuit.
A kind of light-operated LED energy-saving control system based on high resistant filter circuit the most according to claim 5, it is characterised in that described control chip U1 is the integrated chip of MICRF007.
A kind of light-operated LED energy-saving control system based on high resistant filter circuit the most according to claim 5, it is characterised in that described driving chip U2 is the integrated chip of AP3766.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610407939.9A CN105934036A (en) | 2016-06-08 | 2016-06-08 | Light-controlled LED (Light-Emitting Diode) energy-saving control system based on high-resistance filter circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610407939.9A CN105934036A (en) | 2016-06-08 | 2016-06-08 | Light-controlled LED (Light-Emitting Diode) energy-saving control system based on high-resistance filter circuit |
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| CN105934036A true CN105934036A (en) | 2016-09-07 |
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| CN201610407939.9A Pending CN105934036A (en) | 2016-06-08 | 2016-06-08 | Light-controlled LED (Light-Emitting Diode) energy-saving control system based on high-resistance filter circuit |
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| CN (1) | CN105934036A (en) |
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- 2016-06-08 CN CN201610407939.9A patent/CN105934036A/en active Pending
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