CN205648088U - Light -operated automatic dimmer circuit - Google Patents
Light -operated automatic dimmer circuit Download PDFInfo
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- CN205648088U CN205648088U CN201620315017.0U CN201620315017U CN205648088U CN 205648088 U CN205648088 U CN 205648088U CN 201620315017 U CN201620315017 U CN 201620315017U CN 205648088 U CN205648088 U CN 205648088U
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- resistance
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- light
- power supply
- led lamp
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model discloses a light -operated automatic dimmer circuit, including the power and with the LED lamps and lanterns that the source phase is connected be equipped with control switch between power and the LED lamps and lanterns the power with still be equipped with from light modulation control circuit between the LED lamps and lanterns, include first resistance, controlling resistor, photo resistance, fourth resistance, first triode, second triode and the 5th resistance from light modulation control circuit. The utility model has the advantages of simple structure, the simple operation, its accessible photo resistance cooperation controlling resistor realizes the brightness flop of LED lamps and lanterns, can the traditional LED lamps and lanterns of effectual solution can't be according to ambient brightness changes and with an automatic light meter not enough, the stability in use is good, just the practicality is good by force for the suitability.
Description
Technical field
This utility model relates to LED light adjusting circuit technical field, particularly to a kind of light-control automatic dimming circuit.
Background technology
LED lamp is widely used in the middle of people's daily life, daytime differs greatly with ambient light illumination in evening, light fixture is the highest or too secretly the vision of people is had infringement, how to be changed with ambient light illumination by the brightness of simple circuit realiration LED lamp and to change, when ambient light illumination is higher, lamp brightness is dimmed, when ambient light illumination is relatively low, lamp brightness brightens, and this just proposes a great challenge to design.
Utility model content
Main purpose of the present utility model is to provide a kind of light-control automatic dimming circuit, it is intended to solving traditional LED lamp tool cannot change and deficiency with an automatic light meter according to ambient brightness.
nullThe utility model proposes a kind of light-control automatic dimming circuit，Including power supply and the LED lamp that is connected with described power supply，Control switch it is provided with between described power supply and LED lamp，It is additionally provided with from adjusting control circuit between described power supply and described LED lamp，Described include the first resistance from adjusting control circuit、Adjustable resistance、Photoconductive resistance、4th resistance、First audion、Second audion and the 5th resistance，The described outfan controlling switch is connected with the emitter stage of described first audion，The colelctor electrode of described first audion is connected with the positive pole of described LED lamp by the 5th resistance，The base stage of described first audion is connected with the colelctor electrode of described second audion，The emitter stage of described second audion is connected with the negative pole of described power supply，The base stage of described first audion is by the first resistance being sequentially connected in series、Adjustable resistor and photoconductive resistance are connected in the base stage of the second audion，Described 4th resistance is connected between base stage and the power cathode of described second audion.
Described first audion is PNP type triode, and described second audion is NPN type triode.
The range of accommodation of described adjustable resistance is 0-50K Ω.
The resistance value scope of described photoconductive resistance is 0-300K Ω.
Simple in construction of the present utility model, simple operation, it can coordinate adjustable resistance to realize the brightness flop of LED lamp by photoconductive resistance, can effectively solve traditional LED lamp tool cannot change and deficiency with an automatic light meter according to ambient brightness, stability in use is good, and the suitability is strong and practicality good.
Accompanying drawing explanation
Fig. 1 is embodiment schematic diagram of the present utility model.
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
nullWith reference to Fig. 1，An embodiment of the present utility model is proposed，A kind of light-control automatic dimming circuit，Including power supply 1 and the LED lamp 2 that is connected with described power supply 1，Control switch SW1 it is provided with between described power supply 1 and LED lamp 2，It is additionally provided with from adjusting control circuit 3 between described power supply 1 and described LED lamp 2，Described include the first resistance R1 from adjusting control circuit 3、Adjustable resistance R2、Photoconductive resistance R3、4th resistance R4、First audion Q1、Second audion Q2 and the 5th resistance R5，The described outfan controlling switch SW1 is connected with the emitter stage of described first audion Q1，The colelctor electrode of described first audion Q1 is connected by the positive pole of the 5th resistance R5 with described LED lamp 2，The base stage of described first audion Q1 is connected with the colelctor electrode of described second audion Q2，The emitter stage of described second audion Q2 is connected with the negative pole of described power supply 1，The base stage of described first audion Q1 is by the first resistance R1 being sequentially connected in series、Adjustable resistor R2 and photoconductive resistance R3 is connected in the base stage of the second audion Q2，Described 4th resistance R4 is connected between base stage and power supply 1 negative pole of described second audion Q2.
Described first audion is PNP type triode, and described second audion is NPN type triode.
The range of accommodation of described adjustable resistance is 0-50K Ω.
The resistance value scope of described photoconductive resistance is 0-300K Ω.
Its operation principle is summarized as follows: after switch SW1 Guan Bi, LED illumination control circuit is started working, and audion Q1 Yu Q2 is in conducting state；When ambient light illumination is higher, photoconductive resistance R3 resistance is bigger, base current now by Q2 is less, Q2 is in magnifying state, Q1 base current size is by Q2 control, therefore by the electric current of LED finally by Q2 control, when photoconductive resistance R3 resistance is bigger, Q1 is in magnifying state, and LED brightness is dark；The most dimmed along with ambient light illumination, photoconductive resistance R3 resistance is the most less, causes LED brightness to be gradually increased；When ambient light illumination is relatively low, photoconductive resistance R3 resistance is less, and Q1 is in saturation, and LED brightness is maximum；Therefore LED brightness changes with ambient light illumination change.
Simple in construction of the present utility model, simple operation, it can coordinate adjustable resistance to realize the brightness flop of LED lamp by photoconductive resistance, can effectively solve traditional LED lamp tool cannot change and deficiency with an automatic light meter according to ambient brightness, stability in use is good, and the suitability is strong and practicality good.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure transformation utilizing this utility model description and accompanying drawing content to be made; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (4)
- null1. a light-control automatic dimming circuit，Including power supply and the LED lamp that is connected with described power supply，Control switch it is provided with between described power supply and LED lamp，It is characterized in that: be additionally provided with from adjusting control circuit between described power supply and described LED lamp，Described include the first resistance from adjusting control circuit、Adjustable resistance、Photoconductive resistance、4th resistance、First audion、Second audion and the 5th resistance，The described outfan controlling switch is connected with the emitter stage of described first audion，The colelctor electrode of described first audion is connected with the positive pole of described LED lamp by the 5th resistance，The base stage of described first audion is connected with the colelctor electrode of described second audion，The emitter stage of described second audion is connected with the negative pole of described power supply，The base stage of described first audion is by the first resistance being sequentially connected in series、Adjustable resistor and photoconductive resistance are connected in the base stage of the second audion，Described 4th resistance is connected between base stage and the power cathode of described second audion.
- Light-control automatic dimming circuit the most according to claim 1, it is characterised in that: described first audion is PNP type triode, and described second audion is NPN type triode.
- Light-control automatic dimming circuit the most according to claim 2, it is characterised in that: the range of accommodation of described adjustable resistance is 0-50K Ω.
- Light-control automatic dimming circuit the most according to claim 3, it is characterised in that: the resistance value scope of described photoconductive resistance is 0-300K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620315017.0U CN205648088U (en) | 2016-04-15 | 2016-04-15 | Light -operated automatic dimmer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620315017.0U CN205648088U (en) | 2016-04-15 | 2016-04-15 | Light -operated automatic dimmer circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205648088U true CN205648088U (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620315017.0U Active CN205648088U (en) | 2016-04-15 | 2016-04-15 | Light -operated automatic dimmer circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205648088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108366465A (en) * | 2018-04-24 | 2018-08-03 | 华域视觉科技(上海)有限公司 | A kind of control circuit for light source and lighting device |
-
2016
- 2016-04-15 CN CN201620315017.0U patent/CN205648088U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108366465A (en) * | 2018-04-24 | 2018-08-03 | 华域视觉科技(上海)有限公司 | A kind of control circuit for light source and lighting device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |