CN106535414B - Induction control circuit and LED power supply driving control circuit - Google Patents
Induction control circuit and LED power supply driving control circuit Download PDFInfo
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- CN106535414B CN106535414B CN201611197788.5A CN201611197788A CN106535414B CN 106535414 B CN106535414 B CN 106535414B CN 201611197788 A CN201611197788 A CN 201611197788A CN 106535414 B CN106535414 B CN 106535414B
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- 230000006698 induction Effects 0.000 title claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000002955 isolation Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000001939 inductive effect Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 101100190528 Arabidopsis thaliana PIN6 gene Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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]
- H05B45/10—Controlling the intensity of the light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention relates to an LED power supply driving control circuit. The induction control circuit comprises a signal processing circuit and a sensor, wherein the signal processing circuit comprises a signal conversion circuit, a hysteresis compensation circuit and an isolation control circuit; the input end of the signal conversion circuit is connected with the output end of the sensor, and the input end of the hysteresis compensation circuit is connected with the output end of the signal conversion circuit; the input end of the isolation control circuit is connected with the output end of the hysteresis compensation circuit, and the isolation control circuit receives the second voltage signal and outputs a control signal according to the second voltage signal. An LED power supply driving control circuit comprises a power supply driving circuit and the induction control circuit. The induction control circuit and the LED power supply driving control circuit have soft switching, so that switching elements such as a relay and a bidirectional thyristor are not needed, and the characteristics of low cost, small volume, stability, reliability, high cost performance and good compatibility are realized.
Description
Technical Field
The invention relates to the field of the invention, in particular to an induction control circuit and an LED power supply driving control circuit.
Background
With the rapid development of electronic technology, LED lamp products gradually become popular, and for the purposes of energy saving, light control, replacement of traditional incandescent lamps and fluorescent lamps, etc., lamps with induction control are increasingly used. Conventional inductive control circuits use relays or thyristors as switches for controlling the lamp. The driving relay and the controllable silicon are generally powered by a resistance-capacitance step-down circuit.
However, the induction control using a switching element such as a relay or a thyristor often has the following drawbacks:
1. the controller with the resistor-capacitor voltage-reducing power supply can lead to a loop between the shell of the lamp and the mains supply, thereby generating potential safety hazards of electric leakage.
2. The induction control of switching elements such as a relay or a controllable silicon belongs to hard switching, and the switching moment has larger impact current to the switching elements, and the service life of the switching elements can be seriously reduced due to the overlarge impact current.
3. When a lamp with higher power needs to be controlled, the switching element also needs to be selected with higher specification, and the cost is further increased.
Disclosure of Invention
Accordingly, it is desirable to provide an induction control circuit and an LED power supply driving control circuit for solving the above-mentioned problems.
An induction control circuit comprises a signal processing circuit and a sensor for sensing external environment changes, wherein the signal processing circuit comprises a signal conversion circuit, a hysteresis compensation circuit and an isolation control circuit; the input end of the signal conversion circuit is connected with the output end of the sensor, and the signal conversion circuit is used for converting the impedance signal of the sensor into an analog first voltage signal; the input end of the hysteresis compensation circuit is connected with the output end of the signal conversion circuit, and the hysteresis compensation circuit is used for receiving the first voltage signal and outputting a second voltage signal after delaying for a preset time; the input end of the isolation control circuit is connected with the output end of the hysteresis compensation circuit, and the isolation control circuit receives a second voltage signal and outputs a control signal according to the second voltage signal.
In one embodiment, the signal processing module further includes a power supply circuit, an output end of the power supply circuit is connected with an input end of the signal conversion circuit, and the power supply circuit is used for supplying power to the signal processing circuit.
In one embodiment, the signal conversion circuit comprises a resistor R20, wherein one end of the resistor R20 is connected with the power input end VCC, and the other end of the resistor R20 is connected with the sensor; the sensor is also connected with the input end of the hysteresis compensation circuit.
In one embodiment, the hysteresis compensation circuit includes resistor R21, resistor R22, resistor R23, resistor R26, capacitor C8, transistor Q2, transistor Q3, and diode D10; the base electrode of the transistor Q2 is connected with the sensor and grounded through a capacitor C8, and the emitter electrode is grounded; the base electrode of the transistor Q3 is connected with the collector electrode of the transistor Q2, the collector electrode is connected with the power input end VCC through a resistor R22, and the emitter electrode is grounded; the collector of the transistor Q3 is also connected with the input end of the isolation control circuit; the anode of the diode D10 is connected with the collector of the transistor Q3, and the cathode is connected with the base of the transistor Q2 through a resistor R26; one end of the resistor R21 is connected with the base electrode of the transistor Q3, and the other end is connected with the power input end VCC; one end of the resistor R23 is connected to the base of the transistor Q3, and the other end is grounded.
In one embodiment, the isolation control circuit comprises a resistor R24, a resistor R25, a photoelectric coupler OP, a transistor Q4 and a rectifier bridge; the anode of the photoelectric coupler OP is connected with a power input end VCC through a resistor R25, the cathode is connected with the collector of the transistor Q4, the collector is connected with the first input end of the rectifier bridge, and the emitter is connected with the second input end of the rectifier bridge; the base electrode of the transistor Q4 is connected with the output end of the hysteresis compensation circuit through a resistor R24, and the emitter electrode is grounded; the first output end b1 of the rectifier bridge is grounded, the second output end is connected with the control signal output end, and the control signal output end is used for being connected with the driving circuit.
In one embodiment, the rectifier bridge includes a first input terminal a1, a second input terminal a2, a first output terminal b1, a second output terminal b2, a diode D6, a diode D7, a diode D8, and a diode D9; the cathode of the diode D6 and the cathode of the diode D7 are respectively connected to the first input terminal a1, the anode of the diode D6 and the cathode of the diode D8 are respectively connected to the second output terminal b2, the anode of the diode D7 and the cathode of the diode D9 are respectively connected to the first output terminal b1, and the anode of the diode D8 and the anode of the diode D9 are respectively connected to the second output terminal a2.
An LED power supply drive control circuit comprises a power supply drive circuit and an induction control circuit as described above; the output end of the induction control circuit is connected with the input end of the power supply driving circuit, and the output end of the power supply driving circuit is used for being connected with the LED lamp.
The induction control circuit and the LED power supply driving control circuit change the signal of the sensor into the level signal, the signal processing circuit processes the level signal and configures the maximum output voltage value of the power supply driving circuit, so that the LED lamp is turned on and off to have soft switching, and switching elements such as a relay and a bidirectional thyristor are not needed, and the characteristics of low cost, small volume, stability, reliability, high cost performance and good compatibility are realized.
Drawings
FIG. 1 is a schematic block diagram of an inductive control circuit in one embodiment;
FIG. 2 is a schematic circuit diagram of an induction control circuit according to an embodiment;
fig. 3 is a schematic circuit diagram of an LED power driving control circuit according to an embodiment.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1, a schematic block diagram of an induction control circuit according to an embodiment, for example, an induction control circuit 10 includes a signal processing circuit and a sensor. The sensor is used for sensing external environment changes and converting the external environment changes into level signals. For example, the sensor is a photosensitive sensor, a heat-sensitive sensor, or a sound sensor.
In this embodiment, the sensor is a photosensitive sensor device. The external signal is collected by the sensor and converted into an electrical signal. The signal processor is used for processing the electric signals provided by the sensor to realize the functions of thermoelectric isolation, interference removal, hysteresis compensation, time delay and the like, and the processed signals change the configuration of the controlled power supply drive.
For example, the signal processing circuit includes a signal conversion circuit 110, a hysteresis compensation circuit 120, and an isolation control circuit 130. An input terminal of the signal conversion circuit 110 is connected to an output terminal of the sensor, and the signal conversion circuit 110 is configured to convert an impedance signal of the sensor into an analog first voltage signal V1.
The input end of the hysteresis compensation circuit 120 is connected to the output end of the signal conversion circuit 110, and the hysteresis compensation circuit 120 is configured to receive the first voltage signal V1 and output the second voltage signal V2 after delaying for a preset time.
The input end of the isolation control circuit 130 is connected to the output end of the hysteresis compensation circuit 120, and the isolation control circuit 130 receives the second voltage signal and outputs a control signal according to the second voltage signal.
In one embodiment, the signal processing module further includes a power supply circuit, an output terminal of the power supply circuit is connected to an input terminal of the signal conversion circuit 110, and the power supply circuit is configured to supply power to the signal processing circuit. The power supply circuit consists of resistors R17, R18 and R19, a capacitor CE4 and a voltage stabilizing tube DZ2, and the power supply voltage VCC is obtained through current limiting of R17/R18/R19 and DZ2 voltage clamping.
In one embodiment, the signal conversion circuit 110 includes a resistor R20, where one end of the resistor R20 is connected to the power input VCC and the other end is connected to the sensor. The sensor is also connected to the input of the hysteresis compensation circuit 120.
In one embodiment, the hysteresis compensation circuit 120 includes a resistor R21, a resistor R22, a resistor R23, a resistor R26, a capacitor C8, a transistor Q2, a transistor Q3, and a diode D10. The base of the transistor Q2 is connected to the sensor and to ground via a capacitor C8 and the emitter to ground. The base of the transistor Q3 is connected to the collector of the transistor Q2, the collector is connected to the power supply input VCC via a resistor R22, and the emitter is grounded. The collector of transistor Q3 is also connected to the input of isolation control circuit 130, and in this embodiment, the base of transistor Q4 is connected to the collector of transistor Q3 via resistor R24. The anode of the diode D10 is connected to the collector of the transistor Q3, and the cathode is connected to the base of the transistor Q2 through the resistor R26. One end of the resistor R21 is connected to the base of the transistor Q3, and the other end is connected to the power supply input terminal VCC. One end of the resistor R23 is connected to the base of the transistor Q3, and the other end is grounded.
In one embodiment, the isolation control circuit 130 includes a resistor R24, a resistor R25, a photo coupler OP, a transistor Q4, and a rectifier bridge. The anode of the photoelectric coupler OP is connected with the power input end VCC through a resistor R25, the cathode is connected with the collector of the transistor Q4, the collector is connected with the first input end of the rectifier bridge, and the emitter is connected with the second input end of the rectifier bridge. The base of the transistor Q4 is connected to the output of the hysteresis compensation circuit 120 via the resistor R24, and the emitter is grounded. The first output end b1 of the rectifier bridge is grounded, the second output end is connected with the control signal output end S, and the control signal output end is used for being connected with the driving circuit. For example, the control signal output terminal S and the second output terminal b2 are one port in common.
In one embodiment, the rectifier bridge includes a first input terminal a1, a second input terminal a2, a first output terminal b1, a second output terminal b2, a diode D6, a diode D7, a diode D8, and a diode D9. The cathode of the diode D6 and the cathode of the diode D7 are respectively connected to the first input terminal a1, the anode of the diode D6 and the cathode of the diode D8 are respectively connected to the second output terminal b2, the anode of the diode D7 and the cathode of the diode D9 are respectively connected to the first output terminal b1, and the anode of the diode D8 and the anode of the diode D9 are respectively connected to the second output terminal a2.
The induction control circuit changes the signal of the sensor into the level signal, the signal processing circuit processes the level signal and configures the maximum output voltage value of the power supply driving circuit, so that the on-off of the LED lamp is realized, and the soft switch is realized, thereby the switching elements such as a relay and a bidirectional thyristor are not needed, and the characteristics of low cost, small volume, stability, reliability, high cost performance and very good compatibility are realized.
Referring to fig. 3, a schematic circuit diagram of an LED power driving control circuit according to an embodiment, for example, an LED power driving control circuit includes a power driving circuit and an induction control circuit as described above. The output end of the induction control circuit is connected with the input end of the power supply driving circuit, and the output end of the power supply driving circuit is used for being connected with the LED lamp.
The power supply drive circuit, also referred to as a controlled LED drive power supply, has the function of configuring the maximum output voltage or open circuit protection. When the protection voltage of the function is higher than the on voltage of the LED load, the whole lamp is normally lighted; when the protection voltage of the function is lower than the on voltage of the LED load, the whole lamp is normally extinguished. In a word, the signal of the inductor is converted into a switching signal through the signal processor, so that the maximum output voltage value of the power driver is changed, and the LED lamp is turned on and off.
The power supply driving circuit adopts a conventional power supply driving circuit, and the circuit configuration of the power supply driving circuit is other circuits than the induction control circuit part in fig. 3.
Further, CX1 is a safety capacitor in fig. 3, and the RX1 and RX2 resistors are used to discharge the safety capacitor. R1, C1 and C2 form a pi-type filter circuit. CE1 is an electrolytic capacitor, the resistors R2 and R3 are used for discharging the capacitor, and the diode D1 prevents the electrolytic current from flowing backward. The main function is to absorb lightning surge.
For example, R4, R5, C7, CE2, R13, D3, etc. form a power supply circuit of the IC (and U1 in the circuit), R4, R5 are power supply lines at the time of starting, and after starting, the power is supplied to the IC by D3, R13, C7, CE2 through the N3 winding of the transformer.
For example, R6, C3, R7, D2, T4, etc. form an energy absorbing circuit for absorbing leakage inductance energy of the transformer T4, preventing excessive voltage spikes from being superimposed when Q1 is turned off again.
For example, R15, R28 are driving signal oscillations of U1 for reducing on/off of Q1, R9 may be omitted, and RS1, RS2 are used for detecting current passing through the transformer N1 and the circuit of the MOS transistor Q1.
For example, D5, R16, C6, CE3, etc. are composed of an output rectifying circuit, for example, R16, C6 are reverse spike voltages for the absorption diode D5.
As shown in fig. 3, for example, the power supply of the signal processor is composed of a resistor R17/R18/R19, a capacitor CE4, and a regulator DZ2, and the power supply voltage VCC is obtained by current limiting of R17/R18/R19 and voltage clamping of DZ 2.
The signal processor consists of a signal conversion circuit, a hysteresis compensation circuit and an isolation control circuit. The signal conversion circuit converts the impedance signal of the sensor CD itself into an analog voltage signal V1 through R20. The hysteresis compensation circuit consists of a resistor R21/R22/R23/R26, a capacitor C8, a transistor Q2/Q3 and a diode D10, wherein Q2/Q3/R21/R22/R23 form two inverting amplifiers, and then positive feedback is formed by D10 and R26 so as to achieve the aim of inputting V1 and outputting V2 signals to achieve hysteresis, and the function of C8 is to filter clutter interference of V1. The isolation control circuit consists of a resistor R24/R25, a photoelectric coupler OP, a transistor Q4 and a diode D6/D7/D8/D9, wherein D6/D7/D8/D9 forms a rectifier bridge, the voltage V2 controls the impedance change of the output end of the photoelectric coupler through R24 and Q4, and the PIN-6 of the power supply IC detects the change of an external signal and adjusts the maximum output voltage.
In this embodiment, the circuit control flow of the LED power supply driving control circuit is as follows:
the change of external environment makes the impedance of sensor CD grow, and V1 grow, and when V1 is greater than Q2 base threshold voltage, Q2 switches on, Q3 switches off, Q4 switches on, and the photoelectric coupler is driven and output impedance becomes low, power maximum output voltage: uo=vref (1+r10/R11) ×n2/n3+vd5, the maximum output voltage of the power supply drive is adjusted to be greater than the on voltage of the LED load, and the LED lamp is turned on.
Conversely, when the impedance of the sensor CD becomes smaller, the photo coupler is not driven, the output end of the photo coupler is high in impedance, and the maximum output voltage of the power supply is: uo=vref [ 1+r10/(r11+r12) ]n2/n3+vd5, and the maximum output voltage of the power supply drive is adjusted to be smaller than the on voltage of the LED load, and the LED lamp is turned off. It should be noted that Vref is the voltage value detected by the power supply PIN6, and VD5 is the conduction voltage drop of the diode D5.
The LED power supply driving control circuit changes the signal of the sensor into the level signal, the signal processing circuit processes the level signal and configures the maximum output voltage value of the power supply driving circuit, so that the on-off of the LED lamp is realized, and the LED lamp has soft switching, thereby needing no switching elements such as a relay, a bidirectional thyristor and the like, and having the characteristics of low cost, small volume, stability, reliability, high cost performance and very good compatibility.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. The induction control circuit is characterized by comprising a signal processing circuit and a sensor for inducing external environment change, wherein the signal processing circuit comprises a signal conversion circuit, a hysteresis compensation circuit and an isolation control circuit; the input end of the signal conversion circuit is connected with the output end of the sensor, and the signal conversion circuit is used for converting the impedance signal of the sensor into an analog first voltage signal;
the input end of the hysteresis compensation circuit is connected with the output end of the signal conversion circuit, and the hysteresis compensation circuit is used for receiving the first voltage signal and outputting a second voltage signal after delaying for a preset time;
the input end of the isolation control circuit is connected with the output end of the hysteresis compensation circuit, and the isolation control circuit receives a second voltage signal and outputs a control signal according to the second voltage signal;
the isolation control circuit comprises a resistor R24, a resistor R25, a photoelectric coupler OP, a transistor Q4 and a rectifier bridge;
the anode of the photoelectric coupler OP is connected with a power input end VCC through a resistor R25, the cathode is connected with the collector of the transistor Q4, the collector is connected with the first input end of the rectifier bridge, and the emitter is connected with the second input end of the rectifier bridge;
the base electrode of the transistor Q4 is connected with the output end of the hysteresis compensation circuit through a resistor R24, and the emitter electrode is grounded;
the first output end b1 of the rectifier bridge is grounded, the second output end is connected with the control signal output end, and the control signal output end is used for being connected with the driving circuit;
the signal processing circuit further comprises a power supply circuit.
2. The inductive control circuit of claim 1, wherein an output of the power supply circuit is coupled to an input of the signal conversion circuit, the power supply circuit configured to power the signal processing circuit.
3. The inductive control circuit of claim 1, wherein said supply circuit derives a supply voltage by limiting current and clamping voltage.
4. The inductive control circuit according to claim 1, wherein the signal conversion circuit comprises a resistor R20, one end of the resistor R20 is connected to the power input terminal VCC, and the other end is connected to the sensor; the sensor is also connected with the input end of the hysteresis compensation circuit.
5. The inductive control circuit of claim 1, wherein said hysteresis compensation circuit comprises resistor R21, resistor R22, resistor R23, resistor R26, capacitor C8, transistor Q2, transistor Q3, and diode D10;
the base electrode of the transistor Q2 is connected with the sensor and grounded through a capacitor C8, and the emitter electrode is grounded;
the base electrode of the transistor Q3 is connected with the collector electrode of the transistor Q2, the collector electrode is connected with the power input end VCC through a resistor R22, and the emitter electrode is grounded;
the collector of the transistor Q3 is also connected with the input end of the isolation control circuit;
the anode of the diode D10 is connected with the collector of the transistor Q3, and the cathode is connected with the base of the transistor Q2 through a resistor R26;
one end of the resistor R21 is connected with the base electrode of the transistor Q3, and the other end is connected with the power input end VCC;
one end of the resistor R23 is connected to the base of the transistor Q3, and the other end is grounded.
6. The inductive control circuit of claim 5, wherein said rectifier bridge comprises a first input terminal a1, a second input terminal a2, a first output terminal b1, a second output terminal b2, a diode D6, a diode D7, a diode D8, and a diode D9;
the cathode of the diode D6 and the cathode of the diode D7 are connected to the first input terminal a1,
the anode of the diode D6 and the cathode of the diode D8 are connected to the second output terminal b2,
the anode of the diode D7 and the cathode of the diode D9 are connected to the first output terminal b1,
the anode of the diode D8 and the anode of the diode D9 are connected to the second output terminal a2, respectively.
7. An LED power supply drive control circuit comprising a power supply drive circuit and an induction control circuit according to any one of claims 1 to 6; the output end of the induction control circuit is connected with the input end of the power supply driving circuit, and the output end of the power supply driving circuit is used for being connected with the LED lamp.
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| CN201611197788.5A CN106535414B (en) | 2016-12-22 | 2016-12-22 | Induction control circuit and LED power supply driving control circuit |
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| CN201611197788.5A CN106535414B (en) | 2016-12-22 | 2016-12-22 | Induction control circuit and LED power supply driving control circuit |
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| CN203554761U (en) * | 2013-11-08 | 2014-04-16 | 青岛黄海学院 | Light control circuit adopting heat radiation induction |
| CN204836696U (en) * | 2015-08-05 | 2015-12-02 | 肖志军 | Constant -current drive circuit that LED lamp can be adjusted luminance |
| CN105407567A (en) * | 2015-10-28 | 2016-03-16 | 武汉理工大学 | LED energy-saving lighting device |
| CN105430796A (en) * | 2015-12-11 | 2016-03-23 | 成都翰道科技有限公司 | Intelligent LED lamp energy saving control system based on two-stage filtering signal amplification circuit |
| CN105611667A (en) * | 2015-12-19 | 2016-05-25 | 长安大学 | Control circuit and method based on sound-light control energy-saving LED lamp |
| CN105376895A (en) * | 2015-12-23 | 2016-03-02 | 成都雷纳斯科技有限公司 | LED lamp multifunctional control system based on brightness signal processing circuit |
| CN105848337A (en) * | 2016-04-01 | 2016-08-10 | 成都昂迪加科技有限公司 | LED lamp light-operated energy saving system based on trilinear drive circuit |
| CN105873272A (en) * | 2016-04-13 | 2016-08-17 | 成都聚汇才科技有限公司 | LED lamp strip energy-saving control system employing multi-circuit processing |
| CN105916238A (en) * | 2016-04-13 | 2016-08-31 | 成都聚汇才科技有限公司 | Transistor-voltage-stabilizing-filtering-circuit-based energy-saving control system for LED lamp band |
| CN206314032U (en) * | 2016-12-22 | 2017-07-07 | 惠州Tcl照明电器有限公司 | Inductive control circuit and LED power drive control circuit |
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Effective date of registration: 20181207 Address after: 516000 No. 72 Huifeng 4th Road, Zhongkai High-tech Zone, Huizhou City, Guangdong Province (Factory Building) Applicant after: TCL HUARUI LIGHTING TECHNOLOGY (HUIZHOU) Co.,Ltd. Applicant after: VERY OPTOELECTRONICS (HUIZHOU) Co.,Ltd. Address before: 516006 No. 26, No. 3 Zhongkai Avenue, Huizhou City, Guangdong Province Applicant before: HUIZHOU TCL LIGHT ELECTRICAL APPLIANCE Co.,Ltd. |
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