CN205544199U - LED overvoltage protection control circuit - Google Patents
LED overvoltage protection control circuit Download PDFInfo
- Publication number
- CN205544199U CN205544199U CN201620101342.7U CN201620101342U CN205544199U CN 205544199 U CN205544199 U CN 205544199U CN 201620101342 U CN201620101342 U CN 201620101342U CN 205544199 U CN205544199 U CN 205544199U
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- CN
- China
- Prior art keywords
- resistance
- connects
- electric capacity
- rectifier bridge
- unidirectional thyristor
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- 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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- 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]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a LED overvoltage protection control circuit, including resistance R5, switch K, rectifier bridge T and triode V2, electric capacity C4 and 220V alternating current are connected to resistance R5's one end, electric capacity C4 and rectifier bridge T's port 1 is connected to resistance R5's the other end, rectifier bridge T's 3 other ends of connecting the 220V alternating current of port, rectifier bridge T's port 2 connecting resistance R2, electric capacity C3, triode V1's collecting electrode, unidirectional thyristor P1's positive pole and unidirectional thyristor P2's negative pole, resistance R2's other end linked switch K, unidirectional thyristor P1's control electrode is connected to switch K's the other end. The utility model discloses LED overvoltage protection control circuit simple structure, components and parts are few, and whole circuit does not have the chip structure, and its interference killing feature is stronger, can carry out effectual protection to the short circuit in the circuit and the excessive pressure circumstances, consequently have various, the with low costs and convenient to use's of function advantage.
Description
Technical field
This utility model relates to a kind of LED circuit, specifically a kind of LED overvoltage protection control circuits.
Background technology
Along with the negative effect caused by Global Greenhouse Effect constantly manifests, in the world every country all using energy-saving and emission-reduction as the major issue that be must take in native economic development, the emerging power-saving technology that LED lighting engineering is arisen at the historic moment just under this background.LED illuminating product has had been applied in daily life, along with developing rapidly of LED at present.The conventional light source that now white LED light source is compared has life-span length, solid state lighting is hardly damaged, specular removal, without advantages such as hydrargyrum environmental protection, antidetonations, following will become third generation light source, another revolution of lighting field will be brought.The power circuit of LED directly determines functional performance and the service life of LED, and the existing most structure of LED power circuit is complicated, interference free performance is poor, therefore needs to be improved.
Utility model content
The purpose of this utility model is to provide a kind of LED overvoltage protection control circuits, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
nullA kind of LED overvoltage protection control circuits，Including resistance R5、Switch K、Rectifier bridge T and audion V2，One end of described resistance R5 connects electric capacity C4 and 220V alternating current，The other end of resistance R5 connects the port 1 of electric capacity C4 and rectifier bridge T，The port 3 of rectifier bridge T connects the other end of 220V alternating current，The port 2 of rectifier bridge T connects resistance R2、Electric capacity C3、The colelctor electrode of audion V1、The anode of unidirectional thyristor P1 and the negative electrode of unidirectional thyristor P2，The other end connecting valve K of resistance R2，The other end of switch K connects the control pole of unidirectional thyristor P1，The other end of electric capacity C3 connects resistance R2、Electric capacity C1、The fixing end of of potentiometer RP1、The port 4 of LED lamp H and rectifier bridge T，The negative electrode of unidirectional thyristor P2 connects electric capacity C2 and the other end of resistance R2，The other end of electric capacity C1 connects the control pole of resistance R3 and unidirectional thyristor P2，The anode of unidirectional thyristor P1 connects resistance R4 and the base stage of audion V1，The emitter stage of audion V1 connects the other end of electric capacity C2、The other end of resistance R4、The fixing end of of current potential RP1、The colelctor electrode of audion V2 and LED lamp H，The emitter stage of the other end connecting triode V2 of resistance R3，The base stage of audion V2 connects the anode of diode D1，The negative electrode of diode D1 connects the sliding end of potentiometer RP1.
As preferred version of the present utility model: described switch K is touch-switch.
Compared with prior art; the beneficial effects of the utility model are: this utility model LED overvoltage protection control circuits simple in construction, components and parts are few; whole circuit chipless structure; its capacity of resisting disturbance is stronger; short circuit in circuit and overpressure situation can be effectively protected, therefore there is diverse in function, low cost and advantage easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of LED overvoltage protection control circuits.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，A kind of LED overvoltage protection control circuits，Including resistance R5、Switch K、Rectifier bridge T and audion V2，One end of described resistance R5 connects electric capacity C4 and 220V alternating current，The other end of resistance R5 connects the port 1 of electric capacity C4 and rectifier bridge T，The port 3 of rectifier bridge T connects the other end of 220V alternating current，The port 2 of rectifier bridge T connects resistance R2、Electric capacity C3、The colelctor electrode of audion V1、The anode of unidirectional thyristor P1 and the negative electrode of unidirectional thyristor P2，The other end connecting valve K of resistance R2，The other end of switch K connects the control pole of unidirectional thyristor P1，The other end of electric capacity C3 connects resistance R2、Electric capacity C1、The fixing end of of potentiometer RP1、The port 4 of LED lamp H and rectifier bridge T，The negative electrode of unidirectional thyristor P2 connects electric capacity C2 and the other end of resistance R2，The other end of electric capacity C1 connects the control pole of resistance R3 and unidirectional thyristor P2，The anode of unidirectional thyristor P1 connects resistance R4 and the base stage of audion V1，The emitter stage of audion V1 connects the other end of electric capacity C2、The other end of resistance R4、The fixing end of of current potential RP1、The colelctor electrode of audion V2 and LED lamp H，The emitter stage of the other end connecting triode V2 of resistance R3，The base stage of audion V2 connects the anode of diode D1，The negative electrode of diode D1 connects the sliding end of potentiometer RP1.
Switch K is touch-switch.
nullOperation principle of the present utility model is: three end adjustable reference source P1 in circuit、Three end adjustable reference source P2、Resistance R2、Resistance R3、Electric capacity C2 and potentiometer RP1 composition overvoltage detection protection circuit，Resistance R1、Switch K is used for triggering startup，When loading normal，Press switch K，P1 is triggered conducting，LED lamp H obtains electric work，Due to the over-current detection resistance R4 both end voltage base-on voltage less than audion V1，Therefore the normal work of load，When occurring that short circuit or other faults cause load to increase the weight of，Resistance R4 two ends pressure drop is increased，Base-on voltage beyond audion V1，P1 ends because electric current is too small，Again because P1 will be flow through when audion V1 turns on、Current bypass on resistance R4，P1 is ended，Audion V1 is also switched off，Cut off the power supply of LED，Thus reach the purpose of overcurrent protection，When the voltage being added in LED two ends raises and causes load both end voltage to increase above critical，Diode D1 turns on，Audion V2 is also switched on，P2 is triggered conducting，Electric capacity C2 both end voltage is added in P1 two ends through P2，P1 was ended plus backward voltage because of anode moment，Cut off load power source.
Claims (2)
- null1. a LED overvoltage protection control circuits，Including resistance R5、Switch K、Rectifier bridge T and audion V2，It is characterized in that，One end of described resistance R5 connects electric capacity C4 and 220V alternating current，The other end of resistance R5 connects the port 1 of electric capacity C4 and rectifier bridge T，The port 3 of rectifier bridge T connects the other end of 220V alternating current，The port 2 of rectifier bridge T connects resistance R2、Electric capacity C3、The colelctor electrode of audion V1、The anode of unidirectional thyristor P1 and the negative electrode of unidirectional thyristor P2，The other end connecting valve K of resistance R2，The other end of switch K connects the control pole of unidirectional thyristor P1，The other end of electric capacity C3 connects resistance R2、Electric capacity C1、The fixing end of of potentiometer RP1、The port 4 of LED lamp H and rectifier bridge T，The negative electrode of unidirectional thyristor P2 connects electric capacity C2 and the other end of resistance R2，The other end of electric capacity C1 connects the control pole of resistance R3 and unidirectional thyristor P2，The anode of unidirectional thyristor P1 connects resistance R4 and the base stage of audion V1，The emitter stage of audion V1 connects the other end of electric capacity C2、The other end of resistance R4、The fixing end of of current potential RP1、The colelctor electrode of audion V2 and LED lamp H，The emitter stage of the other end connecting triode V2 of resistance R3，The base stage of audion V2 connects the anode of diode D1，The negative electrode of diode D1 connects the sliding end of potentiometer RP1.
- A kind of LED overvoltage protection control circuits the most according to claim 1, it is characterised in that described switch K is touch-switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620101342.7U CN205544199U (en) | 2016-02-02 | 2016-02-02 | LED overvoltage protection control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620101342.7U CN205544199U (en) | 2016-02-02 | 2016-02-02 | LED overvoltage protection control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205544199U true CN205544199U (en) | 2016-08-31 |
Family
ID=56775183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620101342.7U Expired - Fee Related CN205544199U (en) | 2016-02-02 | 2016-02-02 | LED overvoltage protection control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205544199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112471596A (en) * | 2020-12-03 | 2021-03-12 | 王为平 | Electronic cigarette and electronic cigarette protection circuit |
-
2016
- 2016-02-02 CN CN201620101342.7U patent/CN205544199U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112471596A (en) * | 2020-12-03 | 2021-03-12 | 王为平 | Electronic cigarette and electronic cigarette protection circuit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170202 |