CN109195252A - A kind of LED light control lamp control circuit - Google Patents
A kind of LED light control lamp control circuit Download PDFInfo
- Publication number
- CN109195252A CN109195252A CN201811108975.0A CN201811108975A CN109195252A CN 109195252 A CN109195252 A CN 109195252A CN 201811108975 A CN201811108975 A CN 201811108975A CN 109195252 A CN109195252 A CN 109195252A
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- timing
- capacitor
- led light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 49
- 230000002459 sustained effect Effects 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000005286 illumination Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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]
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of LED light control lamp control circuits, comprising: including current rectifying and wave filtering circuit, LED drive circuit, timing circuit and optical signal input circuit；It is electrically connected after the current rectifying and wave filtering circuit is connected with input terminal with LED drive circuit, LED drive circuit and timing circuit electric connection, timing circuit and the electrical connection of optical signal input circuit.Using this LED light control lamp control circuit, illumination power is incuded using photodiode to change the electric current in circuit, realize the purpose for controlling LED light according to care degree, and its timing is completed by timing chip, timing accuracy is high, and circuit stability is high, and LED light and light-operated circuit service life are longer.
Description
Technical field
The present invention relates to light-controlled lamp field of circuit control more particularly to a kind of LED light control lamp control circuits.
Background technique
As environmental consciousness is more and more stronger, present people start to focus on the environmental protection of various aspects, also include the ring in terms of lamps and lanterns
Protect, therefore design a variety of acoustic control lamps, light-controlled lamp etc.,
In the prior art, the working principle of most of light-controlled lamp is that a light-inductive circuit is arranged to detect surrounding ring
The brightness of border light illustrates that ambient enviroment is in the state of relative luster, energy-saving lamp then keeps putting out if brightness is greater than the set value
The state gone out；If brightness is lower than setting value, illustrate that ambient enviroment is in darker state, energy-saving lamp then can automatic point
It is bright.After striking, light-inductive circuit detects the brightness of surrounding environment light to lamp in real time or at intervals, sets if be greater than in brightness
When definite value, lamp then can automatic distinguishing, with achieve the purpose that save electric power.
However light-controlled lamp in the prior art, light-operated circuit for lamp and lamp are cut-off in prolonged and repeated, the service life is very short, needs
It to replace for a long time, and the stability of entire circuit is not high, safety is not high, and timing offset is big, influences using effect.
Summary of the invention
The purpose of the present invention is in view of the drawbacks of the prior art, providing a kind of LED light control lamp control circuit, by LED with
And the light-operated lamp control circuit of design, circuit design stability is high, simply, safety extension service life and using effect,
And it is provided with fuse, also can further guarantee the safety of circuit.
In order to reach the goals above, the invention adopts the following technical scheme:
A kind of LED light control lamp control circuit, including current rectifying and wave filtering circuit, LED drive circuit, timing circuit and optical signal are defeated
Enter circuit；
It is electrically connected after the current rectifying and wave filtering circuit is connected with input terminal with LED drive circuit, LED drive circuit and timing electricity
Road electrical connection, timing circuit and the electrical connection of optical signal input circuit.
Further, current rectifying and wave filtering circuit includes bridge rectifier component DB1 and electrolytic capacitor filter C4, and the bridge-type is whole
2 ends of stream component DB1 are connected with input terminal respectively with 4 ends, 3 ends of the bridge rectifier component DB1 and filtering electrolysis electricity
Hold the anode connection of C4,1 end of bridge rectifier component DB1, the cathode of electrolytic capacitor C4 are grounded.
Further, LED drive circuit includes: driving chip CS1, freewheeling circuit, anti-lightning road, reference circuit, starting
Circuit, resistance R4；
Freewheeling circuit includes sustained diode 21, inductance L1, and sustained diode 21 and inductance L1 and LED light are connected；
Anti- lightning road includes capacitor C5 and resistance R8, capacitor C5 and resistance R8 it is in parallel after and LED light it is in parallel；Reference circuit includes resistance R5
With resistance R6, resistance R5 and resistance R6 are in parallel；Start-up circuit includes resistance R3, resistance R2, resistance R13 and capacitor C1, resistance R3,
It connects between resistance R2, resistance R13 and capacitor C1；
The DRAIN pin of driving chip CS1 is connected with one end of the anode of sustained diode 21 and inductance L1, afterflow
The cathode of diode D21 connects one end of LED anode and current rectifying and wave filtering circuit, another termination LED cathode of inductance L1；
The CS pin of a termination driving chip CS1 after resistance R5 and resistance R6 are in parallel, other end ground connection；
The VCC pin of driving chip CS1 connects the anode of one end of resistance R13 and capacitor C1 in start-up circuit, resistance R13's
One end of another terminating resistor R2, one end of another terminating resistor R3 of resistance R2, another termination LED light of resistance R3 is just
Pole, the cathode ground connection of capacitor C1；
One end of the ROVP pin connecting resistance R4 of driving chip CS1, the other end ground connection of resistance R4.
Further, driving chip CS1 is CS7320S model chip.
Further, timing circuit includes: timing chip U1, resistance R1, resistance R7, resistance R9, resistance R10, resistance
R11, capacitor C2, capacitor C3, sustained diode 22, triode Q1；
One end of the Trigger pin connecting resistance R7 of the timing chip U1, the other end ground connection of resistance R7, timing chip
One end of the Output pin connecting resistance R1 of U1, the base stage of another termination triode Q1 of resistance R1, the collector of triode Q1
LED drive circuit is connect, the emitter of triode Q1 is grounded, and the plus earth of sustained diode 22, sustained diode 22 is born
One end of pole connecting resistance R10, the VCC pin of the anode of capacitor C2 and timing chip U1 and resistance R11 one end, resistance
Another termination LED drive circuit of R10, the cathode of capacitor C2 connect the Threshold pin of timing chip U1, timing chip U1's
Control Voltage pin connects one end of capacitor C3, the other end ground connection of capacitor C3.
Further, optical signal input circuit includes: resistance R12, diode D5 and photodiode D4, photosensitive two pole
The cathode of pipe D4 connects the Trigger pin of timing chip U1, and the anode of photodiode D4 connects the anode of diode D5, diode
One end of the cathode connecting resistance R12 of D5, the Threshold pin of another termination timing chip U1 of resistance R12.
Further, timing chip U1 is NE555 model chip.
Further, triode Q1 is NPN type crystal amplifier tube.
Further, current rectifying and wave filtering circuit and input terminal are provided with fuse.
The beneficial effects of the present invention are:
(1) light-operated sensitivity is improved by the amplification factor of transistor；
(2) optical signal carries out the determination of optical signal by photodiode, improves sensitivity of the circuit to light；
(3) timing is carried out using timing chip, precision is higher；
(4) design has freewheeling circuit and anti-lightning road, and protection foot position resistance, further ensures the stability of circuit
And safety, improve the service life of LED light.
Detailed description of the invention
The circuit diagram of Fig. 1 LED light control lamp control circuit of the present invention.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
Embodiment
A kind of LED light control lamp control circuit is present embodiments provided, as shown in Figure 1, this control circuit includes rectifying and wave-filtering
Circuit, LED drive circuit, timing circuit and optical signal input circuit；
It is electrically connected after the current rectifying and wave filtering circuit is connected with input terminal with LED drive circuit, LED drive circuit and timing electricity
Road electrical connection, timing circuit and the electrical connection of optical signal input circuit.
Further, current rectifying and wave filtering circuit includes bridge rectifier component DB1 and electrolytic capacitor filter C4, and the bridge-type is whole
2 ends of stream component DB1 are connected with input terminal respectively with 4 ends, 3 ends of the bridge rectifier component DB1 and filtering electrolysis electricity
Hold the anode connection of C4,1 end of bridge rectifier component DB1, the cathode of electrolytic capacitor C4 are grounded.
Further, LED drive circuit includes: driving chip CS1, freewheeling circuit, anti-lightning road, reference circuit, starting
Circuit, resistance R4；
Freewheeling circuit includes sustained diode 21, inductance L1, and sustained diode 21 and inductance L1 and LED light are connected；
Anti- lightning road includes capacitor C5 and resistance R8, capacitor C5 and resistance R8 it is in parallel after and LED light it is in parallel；Reference circuit includes resistance R5
With resistance R6, resistance R5 and resistance R6 are in parallel；Start-up circuit includes resistance R3, resistance R2, resistance R13 and capacitor C1, resistance R3,
It connects between resistance R2, resistance R13 and capacitor C1；
The DRAIN pin of driving chip CS1 is connected with one end of the anode of sustained diode 21 and inductance L1, afterflow
The cathode of diode D21 connects one end of LED anode and current rectifying and wave filtering circuit, another termination LED cathode of inductance L1；
The CS pin of a termination driving chip CS1 after resistance R5 and resistance R6 are in parallel, other end ground connection；
The VCC pin of driving chip CS1 connects the anode of one end of resistance R13 and capacitor C1 in start-up circuit, resistance R13's
One end of another terminating resistor R2, one end of another terminating resistor R3 of resistance R2, another termination LED light of resistance R3 is just
Pole, the cathode ground connection of capacitor C1；
One end of the ROVP pin connecting resistance R4 of driving chip CS1, the other end ground connection of resistance R4.
Further, driving chip CS1 is CS7320S model chip.
Further, timing circuit includes: timing chip U1, resistance R1, resistance R7, resistance R9, resistance R10, resistance
R11, capacitor C2, capacitor C3, sustained diode 22, triode Q1；
One end of the Trigger pin connecting resistance R7 of the timing chip U1, the other end ground connection of resistance R7, timing chip
One end of the Output pin connecting resistance R1 of U1, the base stage of another termination triode Q1 of resistance R1, the collector of triode Q1
LED drive circuit is connect, the emitter of triode Q1 is grounded, and the plus earth of sustained diode 22, sustained diode 22 is born
One end of pole connecting resistance R10, the VCC pin of the anode of capacitor C2 and timing chip U1 and resistance R11 one end, resistance
Another termination LED drive circuit of R10, the cathode of capacitor C2 connect the Threshold pin of timing chip U1, timing chip U1's
Control Voltage pin connects one end of capacitor C3, the other end ground connection of capacitor C3.
Further, optical signal input circuit includes: resistance R12, diode D5 and photodiode D4, photosensitive two pole
The cathode of pipe D4 connects the Trigger pin of timing chip U1, and the anode of photodiode D4 connects the anode of diode D5, diode
One end of the cathode connecting resistance R12 of D5, the Threshold pin of another termination timing chip U1 of resistance R12.
Further, timing chip U1 is NE555 model chip.
Further, triode Q1 is NPN type crystal amplifier tube.
Further, current rectifying and wave filtering circuit and input terminal are provided with fuse.
Wherein: resistance R9, resistance R10 and capacitor C2 constitute the necessary condition of timing chip U1 i.e. chip NE555 starting,
Wherein since the stress of voltage, resistance R9, resistance R10 power are not less than 1/4W, the VCC pin of this timing chip U1 connects external electricity
Just, the Control Voltage pin of timing chip U1 is the VCC power reference end inside timing chip U1, external capacitor in source
C3 provides condition for timing chip U1 starting, and Output pin is external control output end, and Trigger pin is triggering foot, this
The LED light control lamp control circuit of application is low electric frequency trigger circuit.Wherein Threshold pin is that high level does not meet VCC directly
Pin.
Footing when wherein Reset pin is, when receive photodiode D4 sense illumination preset weaker range when,
It generates low level and triggers Trigger pin, so that timing chip U1 starts to work, control triode Q1 is opened over the ground, at this time LED
The capacitor C1 of driving circuit is in short-circuit condition, then driving chip CS1, that is, chip CS7320 of LED drive circuit stops working,
Wherein resistance R3, resistance R2, resistance R13 and capacitor C1 constitute the start-up circuit of driving chip CS1.Resistance R4 is driving chip
The Rovp of CS1 protects foot position.
Wherein resistance R5, resistance R6 are set as the current reference point of driving chip CS1.
Electric current in sustained diode 21 and the smooth control circuit of inductance L1, prevents voltage and current to be mutated, improves electricity
The stability on road.
It is further preferred that the capacitor C5 in the anti-lightning road provided in the present embodiment is mentioned to reduce LED flashing
The charge/discharge capacitor of confession, resistance R8 are discharge resistances, due to LED light control lamp, need on-off repeatedly in use, very
It is easy to produce higher voltage damage LED, therefore is provided with to have and can absorb surge, anti-interference, filtering, soft start, the anti-sudden strain of a muscle of AC
Soft start, delay, slowly increases voltage, protects the capacitor C5 and discharge resistance of LED light.
It is further preferred that the fuse provided in the present embodiment provides safety guarantee for entire circuit, ensure that entire
Circuit is worked within the scope of default safe voltage, and the service life of LED light control lamp is extended.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (9)
1. a kind of LED light control lamp control circuit, which is characterized in that including current rectifying and wave filtering circuit, LED drive circuit, timing circuit
With optical signal input circuit；
It is electrically connected after the current rectifying and wave filtering circuit is connected with input terminal with LED drive circuit, LED drive circuit and timing circuit electricity
Connection, timing circuit and the electrical connection of optical signal input circuit.
2. a kind of LED light control lamp control circuit according to claim 1, which is characterized in that
Current rectifying and wave filtering circuit includes bridge rectifier component DB1 and electrolytic capacitor filter C4, the bridge rectifier component DB1's
2 ends are connected with input terminal respectively with 4 ends, and 3 ends of the bridge rectifier component DB1 and the anode of electrolytic capacitor filter C4 connect
It connects, 1 end of bridge rectifier component DB1, the cathode of electrolytic capacitor C4 are grounded.
3. a kind of LED light control lamp control circuit according to claim 1, which is characterized in that LED drive circuit includes: to drive
Dynamic chip CS1, freewheeling circuit, anti-lightning road, reference circuit, start-up circuit, resistance R4；
Freewheeling circuit includes sustained diode 21, inductance L1, and sustained diode 21 and inductance L1 and LED light are connected；Anti- sudden strain of a muscle
Circuit includes capacitor C5 and resistance R8, capacitor C5 and resistance R8 it is in parallel after and LED light it is in parallel；Reference circuit includes resistance R5 and electricity
It is in parallel to hinder R6, resistance R5 and resistance R6；Start-up circuit includes resistance R3, resistance R2, resistance R13 and capacitor C1, resistance R3, resistance
It connects between R2, resistance R13 and capacitor C1；
The DRAIN pin of driving chip CS1 is connected with one end of the anode of sustained diode 21 and inductance L1, two pole of afterflow
The cathode of pipe D21 connects one end of LED anode and current rectifying and wave filtering circuit, another termination LED cathode of inductance L1；
The CS pin of a termination driving chip CS1 after resistance R5 and resistance R6 are in parallel, other end ground connection；
The VCC pin of driving chip CS1 connects the anode of one end of resistance R13 and capacitor C1 in start-up circuit, and resistance R13's is another
One end of terminating resistor R2, one end of another terminating resistor R3 of resistance R2, the anode of another termination LED light of resistance R3, electricity
Hold the cathode ground connection of C1；
One end of the ROVP pin connecting resistance R4 of driving chip CS1, the other end ground connection of resistance R4.
4. a kind of LED light control lamp control circuit according to claim 3, which is characterized in that driving chip CS1 is
CS7320S model chip.
5. a kind of LED light control lamp control circuit according to claim 1, which is characterized in that timing circuit includes: timing core
Piece U1, resistance R1, resistance R7, resistance R9, resistance R10, resistance R11, capacitor C2, capacitor C3, sustained diode 22, triode
Q1；
One end of the Trigger pin connecting resistance R7 of the timing chip U1, the other end ground connection of resistance R7, timing chip U1's
One end of Output pin connecting resistance R1, the base stage of another termination triode Q1 of resistance R1, the collector of triode Q1 meet LED
Driving circuit, the emitter ground connection of triode Q1, the cathode of the plus earth of sustained diode 22, sustained diode 22 connect electricity
One end of R10, one end of the anode of capacitor C2 and the VCC pin of timing chip U1 and resistance R11 are hindered, resistance R10's is another
One termination LED drive circuit, the cathode of capacitor C2 meet the Threshold pin of timing chip U1, the Control of timing chip U1
Voltage pin connects one end of capacitor C3, the other end ground connection of capacitor C3.
6. a kind of LED light control lamp control circuit according to claim 5, which is characterized in that optical signal input circuit includes:
Resistance R12, diode D5 and photodiode D4, the cathode of photodiode D4 connect the Trigger pin of timing chip U1,
The anode of photodiode D4 connects the anode of diode D5, and one end of the cathode connecting resistance R12 of diode D5, resistance R12's is another
The Threshold pin of one termination timing chip U1.
7. a kind of LED light control lamp control circuit according to claim 5 or 6, which is characterized in that timing chip U1 is
NE555 model chip.
8. a kind of LED light control lamp control circuit according to claim 5, which is characterized in that triode Q1 is NPN type crystal
Amplifier tube.
9. a kind of LED light control lamp control circuit according to claim 1, which is characterized in that current rectifying and wave filtering circuit and input
End is provided with fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108975.0A CN109195252B (en) | 2018-09-21 | 2018-09-21 | LED light-operated lamp control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108975.0A CN109195252B (en) | 2018-09-21 | 2018-09-21 | LED light-operated lamp control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109195252A true CN109195252A (en) | 2019-01-11 |
| CN109195252B CN109195252B (en) | 2024-06-14 |
Family
ID=64909599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811108975.0A Active CN109195252B (en) | 2018-09-21 | 2018-09-21 | LED light-operated lamp control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109195252B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110035581A (en) * | 2019-04-22 | 2019-07-19 | 上海芯荃微电子科技有限公司 | Slow timing module |
| CN112188688A (en) * | 2020-09-09 | 2021-01-05 | 高达文科技控股有限公司 | LED lamp |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101600275A (en) * | 2009-07-27 | 2009-12-09 | 裘麒龙 | A kind of operating circuit of LED street lamp |
| CN201888006U (en) * | 2010-10-28 | 2011-06-29 | 江苏好的节能光电科技有限公司 | Intelligent dimming high frequency electronic discharge lamp for road lighting |
| CN203934081U (en) * | 2014-07-04 | 2014-11-05 | 常州市巨泰电子有限公司 | LED lamp drive circuit with light-operated timing |
| CN204904475U (en) * | 2015-07-28 | 2015-12-23 | 秦与 | Take doorbell of light -operated LED lamp |
| CN209390409U (en) * | 2018-09-21 | 2019-09-13 | 宁波多力浦工贸有限公司 | A kind of LED light control lamp control circuit |
-
2018
- 2018-09-21 CN CN201811108975.0A patent/CN109195252B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101600275A (en) * | 2009-07-27 | 2009-12-09 | 裘麒龙 | A kind of operating circuit of LED street lamp |
| CN201888006U (en) * | 2010-10-28 | 2011-06-29 | 江苏好的节能光电科技有限公司 | Intelligent dimming high frequency electronic discharge lamp for road lighting |
| CN203934081U (en) * | 2014-07-04 | 2014-11-05 | 常州市巨泰电子有限公司 | LED lamp drive circuit with light-operated timing |
| CN204904475U (en) * | 2015-07-28 | 2015-12-23 | 秦与 | Take doorbell of light -operated LED lamp |
| CN209390409U (en) * | 2018-09-21 | 2019-09-13 | 宁波多力浦工贸有限公司 | A kind of LED light control lamp control circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110035581A (en) * | 2019-04-22 | 2019-07-19 | 上海芯荃微电子科技有限公司 | Slow timing module |
| CN110035581B (en) * | 2019-04-22 | 2023-10-13 | 上海芯荃微电子科技有限公司 | Slow timing module |
| CN112188688A (en) * | 2020-09-09 | 2021-01-05 | 高达文科技控股有限公司 | LED lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109195252B (en) | 2024-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205408228U (en) | LED stroboscopic lamp controller | |
| CN109195252A (en) | A kind of LED light control lamp control circuit | |
| CN209390409U (en) | A kind of LED light control lamp control circuit | |
| CN204069439U (en) | Self-inspection LED acousto-optic control lamp | |
| CN111405705B (en) | Dimming LED controller and output short-circuit protection method | |
| CN110113842B (en) | Ambient light induction control lamp switch circuit | |
| CN209517561U (en) | A kind of LED lamp with light control functionality | |
| CN205331927U (en) | LED lamp | |
| CN210157437U (en) | Eye-protecting soft-start control circuit for LED lighting power supply | |
| CN212413472U (en) | Dimming LED controller | |
| CN210609805U (en) | Ambient light sensing control lamp switch circuit | |
| CN210469797U (en) | Switching power supply type light-operated LED lamp circuit | |
| CN204069433U (en) | Building energy saving lamp automatics | |
| CN208590135U (en) | A kind of thermal-shutdown circuit of LED drive circuit | |
| CN103025014B (en) | Light-emitting diode (LED) lamp driving power supply with functions of lightning resistance and automatic temperature control | |
| CN207039957U (en) | A kind of circuit of light control energy-saving street lamp | |
| CN217693782U (en) | Induction control circuit for removing LED starting-up impact current | |
| CN211046897U (en) | Non-contact point moving induction time-delay switch | |
| CN205265950U (en) | Energy -saving power's LED street lamp | |
| CN201628193U (en) | Telephone autocontrol floodlight | |
| CN104684135A (en) | Classroom illumination electric-saving circuit | |
| CN218416749U (en) | Control circuit of light-operated automatic switch | |
| CN215345146U (en) | Constant voltage LED lamp driving power supply circuit | |
| CN210868258U (en) | NE555 chip-based light sensation adjusting circuit | |
| CN211860619U (en) | Two-wire acousto-optic control switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |