CN204887532U - LED power supply circuit - Google Patents
LED power supply circuit Download PDFInfo
- Publication number
- CN204887532U CN204887532U CN201520338827.3U CN201520338827U CN204887532U CN 204887532 U CN204887532 U CN 204887532U CN 201520338827 U CN201520338827 U CN 201520338827U CN 204887532 U CN204887532 U CN 204887532U
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- CN
- China
- Prior art keywords
- resistance
- electric capacity
- circuit
- diode
- fuse
- 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.)
- Expired - Fee Related
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Classifications
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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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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a LED power supply circuit, including resistance R1, electric capacity C1, fuse FU and switch S1, the 220V alternating current is connected to fuse FU's one end, fuse FU's other end linked switch S1, switch S1's other end connecting resistance R1, electric capacity C1 and diode D1's positive pole, diode D1's negative pole connecting resistance R3, electric capacity C2 and unidirectional thyristor Q1's positive pole. The utility model discloses LED power supply circuit simple structure, components and parts are few, have set up leakage protection circuit and overvoltage crowbar in the circuit, timely open circuit when meetting abnormal conditions, and protection LED lamps and lanterns are not burnt out with the circuit, consequently have the advantage that the cost of manufacture is hanged down, the function is various, interference immunity is strong.
Description
Technical field
The utility model relates to a kind of power circuit, specifically a kind of LED power circuit.
Background technology
LED is acknowledged as green forth generation light source, is a kind of solid cold light source, has the plurality of advantages such as efficient, life-span length, safety and environmental protection, volume are little, high reliability, fast response time.Reach same illuminating effect at present; the power consumption of LED is approximately 1/10 of incandescent lamp; 1/2 of fluorescent lamp; LED power circuit is concerning most important LED; current most of LED lamp still uses common Power supply; common power good is poor, function singleness, effectively cannot protect the abnormal conditions occurred in circuit, therefore have impact on the use of LED.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the LED power circuit of energy-conserving and environment-protective, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of LED power circuit, comprise resistance R1, electric capacity C1, fuse FU and switch S 1, one end of described fuse FU connects 220V alternating current, the other end connecting valve S1 of fuse FU, the other end contact resistance R1 of switch S 1, the anode of electric capacity C1 and diode D1, the negative electrode contact resistance R3 of diode D1, the anode of electric capacity C2 and unidirectional thyristor Q1, the other end of the other end contact resistance R1 of 220V line voltage, resistance R2, resistance R4, resistance R6, the other end of electric capacity C1, the anode of diode D2, the negative electrode of unidirectional thyristor Q1 and light fixture H, the other end of the other end contact resistance R2 of electric capacity C2, the other end of the other end contact resistance R4 of resistance R3 and bidirectional trigger diode Q2, the other end contact resistance R4 of bidirectional trigger diode Q2, the other end of electric capacity C3 and the control pole of unidirectional thyristor Q1, the other end of resistance R5 connects the negative electrode of diode D2, the other end of resistance R6 and the other end of light fixture H.
As preferred version of the present utility model: described light fixture H is LED electricity-saving lamp.
As preferred version of the present utility model: described resistance R1 is piezo-resistance.
Compared with prior art; the beneficial effects of the utility model are: the utility model LED power circuit structure is simple, components and parts are few; be provided with leakage protection circuit and overvoltage crowbar in circuit; can open circuit in time when running into abnormal conditions; protection LED lamp and circuit are not burnt, and therefore have that cost of manufacture is low, the advantage of diverse in function, strong interference immunity.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of LED power circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of LED power circuit, comprise resistance R1, electric capacity C1, fuse FU and switch S 1, one end of described fuse FU connects 220V alternating current, the other end connecting valve S1 of fuse FU, the other end contact resistance R1 of switch S 1, the anode of electric capacity C1 and diode D1, the negative electrode contact resistance R3 of diode D1, the anode of electric capacity C2 and unidirectional thyristor Q1, the other end of the other end contact resistance R1 of 220V line voltage, resistance R2, resistance R4, resistance R6, the other end of electric capacity C1, the anode of diode D2, the negative electrode of unidirectional thyristor Q1 and light fixture H, the other end of the other end contact resistance R2 of electric capacity C2, the other end of the other end contact resistance R4 of resistance R3 and bidirectional trigger diode Q2, the other end contact resistance R4 of bidirectional trigger diode Q2, the other end of electric capacity C3 and the control pole of unidirectional thyristor Q1, the other end of resistance R5 connects the negative electrode of diode D2, the other end of resistance R6 and the other end of light fixture H.
Described light fixture H is LED electricity-saving lamp, and resistance R1 is piezo-resistance.
Operation principle of the present utility model is: circuit comprises power circuit, over-voltage detection circuit, electric-leakage detection circuit and protective circuit, wherein power circuit comprises resistance R1, switch S 1, electric capacity C1 and diode D1, play step-down, the effect of filtering and rectification, over-voltage detection circuit comprises resistance R3, resistance R4 and bidirectional trigger diode Q2, electric-leakage detection circuit comprises diode D2, resistance R5, resistance R6 and electric capacity C3, protective circuit comprises electric capacity C2, resistance R2, unidirectional thyristor Q1 and fuse FU, before power circuit fuse FU is positioned over piezo-resistance R1, protect piezo-resistance R1 and controllable silicon D2, improve the antijamming capability of circuit, electric-leakage detection circuit adopts two sampling resistor and L-type filter circuit design, guarantees that electric leakage signal is more reliable and more stable, it is more reliable and more stable and simple that overvoltage detection circuit makes overvoltage detection circuit design by electric resistance partial pressure and bidirectional trigger diode matching detection, circuit structure is simple, components and parts are few, be provided with leakage protection circuit and overvoltage crowbar in circuit, can open circuit in time when running into abnormal conditions, protection LED lamp and circuit are not burnt, and therefore have that cost of manufacture is low, the advantage of diverse in function, strong interference immunity.
Claims (3)
1. a LED power circuit, comprises resistance R1, electric capacity C1, fuse FU and switch S 1, it is characterized in that, one end of described fuse FU connects 220V alternating current, the other end connecting valve S1 of fuse FU, the other end contact resistance R1 of switch S 1, the anode of electric capacity C1 and diode D1, the negative electrode contact resistance R3 of diode D1, the anode of electric capacity C2 and unidirectional thyristor Q1, the other end of the other end contact resistance R1 of 220V line voltage, resistance R2, resistance R4, resistance R6, the other end of electric capacity C1, the anode of diode D2, the negative electrode of unidirectional thyristor Q1 and light fixture H, the other end of the other end contact resistance R2 of electric capacity C2, the other end of the other end contact resistance R4 of resistance R3 and bidirectional trigger diode Q2, the other end contact resistance R4 of bidirectional trigger diode Q2, the other end of electric capacity C3 and the control pole of unidirectional thyristor Q1, the other end of resistance R5 connects the negative electrode of diode D2, the other end of resistance R6 and the other end of light fixture H.
2. a kind of LED power circuit according to claim 1, is characterized in that, described light fixture H is LED electricity-saving lamp.
3. a kind of LED power circuit according to claim 1, is characterized in that, described resistance R1 is piezo-resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520338827.3U CN204887532U (en) | 2015-05-25 | 2015-05-25 | LED power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520338827.3U CN204887532U (en) | 2015-05-25 | 2015-05-25 | LED power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204887532U true CN204887532U (en) | 2015-12-16 |
Family
ID=54831849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520338827.3U Expired - Fee Related CN204887532U (en) | 2015-05-25 | 2015-05-25 | LED power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204887532U (en) |
-
2015
- 2015-05-25 CN CN201520338827.3U patent/CN204887532U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |