CN105120578B - A kind of high-powered LED lamp protection circuit - Google Patents
A kind of high-powered LED lamp protection circuit Download PDFInfo
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- CN105120578B CN105120578B CN201510606729.8A CN201510606729A CN105120578B CN 105120578 B CN105120578 B CN 105120578B CN 201510606729 A CN201510606729 A CN 201510606729A CN 105120578 B CN105120578 B CN 105120578B
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- resistance
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- led lamp
- relay
- nand gate
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Abstract
The invention belongs to LED lamp circuit technical field, and in particular to a kind of high-powered LED lamp protection circuit.Technical scheme：Including electric capacity C1, resistance R2, NAND gate U1 and relay J, one end of the electric capacity C1 connects not moved end 2 of the contact J 1 of resistance R2, electric capacity C4, power supply VCC, relay J, the negative electrode of diode D2 and relay J, a fixing end and two inputs of NAND gate U1 of the other end connection potentiometer RP1 of electric capacity C1.High-powered LED lamp protection circuit simple structure of the present invention, component are few; current sampling is carried out by using resistance; recycle the cooperation of logic gates and relay; realize the purpose of high-powered LED lamp starting protection; the probability damaged caused by effectively reducing impact of high-powered LED lamp when starting; therefore, the present invention has the advantages that easy to use, low cost and long service life.
Description
Technical field
The invention belongs to LED lamp circuit technical field, and in particular to a kind of high-powered LED lamp protection circuit.
Background technology
With developing rapidly for LED.The conventional light source that present white LED light source is compared has long lifespan, solid state lighting not
Fragile, specular removal, mercury-free environmental protection, antidetonation the advantages of, future will turn into third generation light source, by bring lighting field another
Revolution.Especially high-powered LED lamp, high-powered LED lamp can produce larger heat when in use, so that its is fully on
It is different with conducting electric current when being initially powered, therefore easily damaged because of rush of current at the energization initial stage, reduce its service life.
The content of the invention
It is an object of the invention to provide a kind of simple structure, high-powered LED lamp protection circuit easy to use, to solve
The problem proposed in above-mentioned background technology.
To achieve the above object, the technical solution used in the present invention is：
A kind of high-powered LED lamp protection circuit, including electric capacity C1, resistance R2, NAND gate U1 and relay J, the electric capacity
One end of C1 connects the contact J-1's of resistance R2, electric capacity C4, power supply VCC, relay J, the negative electrode of diode D2 and relay J
Not moved end 2, a fixing end and two inputs of NAND gate U1 of the other end connection potentiometer RP1 of electric capacity C1, potentiometer
Sliding end, resistance R1, electric capacity C3, electric capacity C2, the emitter stage of triode V1 of another fixing end connection potentiometer RP1 of RP1
With the colelctor electrode of triode V2, an input of the output end connection NAND gate U3 of NAND gate U1, the other end company of resistance R2
Connect a fixing end of potentiometer RP2 and the sliding end of potentiometer RP2, another fixing end connecting triode of potentiometer RP2
The colelctor electrode of V1 and two inputs of NAND gate U2, the other end of the other end connection resistance R1 of electric capacity C2, triode V1
Base stage and high-powered LED lamp H, the negative electrode and a fixing end of potentiometer RP3 of the output end connection diode D1 of NAND gate U2,
The other end of another fixing end connection electric capacity C3 of potentiometer RP3, the anode of diode D1, another input of NAND gate U3
End, the other end of output end connection the resistance R3, resistance R3 of NAND gate U3 connects the base stage of resistance R5 and triode V2, triode
The anode and the other end of relay J of the emitter stage connection diode D2 of V2, the other end connection resistance R4, resistance R4 of electric capacity C4
Other end connection high-powered LED lamp H the other end and relay J contact J-1 moved end 3, the other end connection of resistance R5
Not moved end 1 of the contact J-1 of relay J.
As preferred scheme of the invention：The power supply VCC is 24V direct currents.
Compared with prior art, high-powered LED lamp protection circuit simple structure of the present invention, component are few, by using electricity
Resistance carries out current sampling, recycles the cooperation of logic gates and relay, realizes the mesh of high-powered LED lamp starting protection
, effectively reduce high-powered LED lamp because start when impact caused by damage probability, therefore the present invention have it is easy to use, into
The advantage of this low and long service life.
Brief description of the drawings
Fig. 1 is the circuit diagram of high-powered LED lamp protection circuit of the present invention.
Specific embodiment
As shown in figure 1, a kind of high-powered LED lamp protection circuit of the present embodiment, including electric capacity C1, resistance R2, NAND gate U1
With relay J, one end connection resistance R2 of the electric capacity C1, electric capacity C4, power supply VCC, relay J, the negative electrode of diode D2 and
Not moved end 2 of the contact J-1 of relay J, the fixing end of the other end connection potentiometer RP1 of electric capacity C1 and NAND gate U1's
Two inputs, the sliding end of another fixing end connection potentiometer RP1 of potentiometer RP1, resistance R1, electric capacity C3, electric capacity C2,
The emitter stage of triode V1 and the colelctor electrode of triode V2, an input of the output end connection NAND gate U3 of NAND gate U1,
One fixing end and the sliding end of potentiometer RP2 of the other end connection potentiometer RP2 of resistance R2, potentiometer RP2 another
The colelctor electrode of fixing end connecting triode V1 and two inputs of NAND gate U2, the other end connection resistance R1's of electric capacity C2 is another
One end, the base stage of triode V1 and high-powered LED lamp H, the negative electrode and potentiometer of the output end connection diode D1 of NAND gate U2
One fixing end of RP3, the other end of another fixing end connection electric capacity C3 of potentiometer RP3, the anode of diode D1 and non-
Another input of door U3, the other end connection resistance R5 and three poles of output end connection the resistance R3, resistance R3 of NAND gate U3
The base stage of pipe V2, the anode and the other end of relay J of the emitter stage connection diode D2 of triode V2, the other end of electric capacity C4
The moved end 3 of the contact J-1 of the other end and relay J of the other end connection high-powered LED lamp H of connection resistance R4, resistance R4, electricity
Hinder not moved end 1 of the contact J-1 of the other end connection relay J of R5.
Power supply VCC of the present invention is 24V direct currents.
Operation principle of the invention is：R1 in circuit is current sampling resistor.In order to prevent high-powered LED lamp from starting
When the high current that produces cause the misoperation of circuit, power-on protection delay circuit is constituted by Cl, RP1 and NAND gate U1.Big work(
When rate LED H starts to start, the upper no-voltages of Cl, now NAND gate U1 outputs low level, NAND gate U3 then exports high level, makes
V2 is in cut-off state, and relay J does not work, and its contact J-1 still keeps normally off to connect 2,3 ends, and high-powered LED lamp H can
Obtain normal power supply.When the terminal voltage of Cl is gradually increased to certain value, NAND gate U1 overturns, and output end is changed into electricity high
It is flat, power-on protection start-up circuit power cut-off, the electricity that hereafter output state of NAND gate U3 is then made up of RP2, R2, V1 and R1 etc.
Current detection circuit is controlled.Circuit structure is simple, component is few, and current sampling is carried out by using resistance, recycles gate electricity
Road and the cooperation of relay, realize the purpose of high-powered LED lamp starting protection, when effectively reducing high-powered LED lamp because starting
Impact cause the probability for damaging, therefore there is easy to use, low cost and long service life.
Claims (2)
1. a kind of high-powered LED lamp protection circuit, including electric capacity C1, resistance R2, NAND gate U1 and relay J；It is characterized in that:
One end of the electric capacity C1 connects touching for resistance R2, electric capacity C4, power supply VCC, relay J, the negative electrode of diode D2 and relay J
Not moved end 2 of point J-1, a fixing end and two inputs of NAND gate U1 of the other end connection potentiometer RP1 of electric capacity C1,
The sliding end of another fixing end connection potentiometer RP1 of potentiometer RP1, resistance R1, electric capacity C3, electric capacity C2, triode V1
The colelctor electrode of emitter stage and triode V2, an input of the output end connection NAND gate U3 of NAND gate U1, resistance R2's is another
One end connects a fixing end of potentiometer RP2 and the sliding end of potentiometer RP2, another fixing end connection of potentiometer RP2
The colelctor electrode of triode V1 and two inputs of NAND gate U2, the other end, three poles of the other end connection resistance R1 of electric capacity C2
The base stage and high-powered LED lamp H of pipe V1, the negative electrode of the output end connection diode D1 of NAND gate U2 and one of potentiometer RP3
Fixing end, the other end of another fixing end connection electric capacity C3 of potentiometer RP3, the anode of diode D1, NAND gate U3 it is another
One input, the other end of output end connection the resistance R3, resistance R3 of NAND gate U3 connects the base of resistance R5 and triode V2
Pole, the anode and the other end of relay J of the emitter stage connection diode D2 of triode V2, the other end connection resistance of electric capacity C4
The moved end 3 of the contact J-1 of the other end and relay J of the other end connection high-powered LED lamp H of R4, resistance R4, resistance R5's is another
One end connects not moved end 1 of the contact J-1 of relay J.
2. a kind of high-powered LED lamp protection circuit according to claim 1, it is characterised in that:The power supply VCC is 24V
Direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510606729.8A CN105120578B (en) | 2015-09-22 | 2015-09-22 | A kind of high-powered LED lamp protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510606729.8A CN105120578B (en) | 2015-09-22 | 2015-09-22 | A kind of high-powered LED lamp protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105120578A CN105120578A (en) | 2015-12-02 |
| CN105120578B true CN105120578B (en) | 2017-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510606729.8A Expired - Fee Related CN105120578B (en) | 2015-09-22 | 2015-09-22 | A kind of high-powered LED lamp protection circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN105120578B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923385A (en) * | 2018-08-23 | 2018-11-30 | 明光市鸿晟机电设备制造有限公司 | A kind of motor driving protection circuit of steering controller |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7365951B2 (en) * | 2006-03-07 | 2008-04-29 | Matsushita Electric Works, Ltd. | Discharge lamp lighting device, lighting system and method |
| CN103179718A (en) * | 2011-12-21 | 2013-06-26 | 苏州雪林电器科技有限公司 | Novel LED (light emitting diode) lighting drive circuit |
| CN103024964A (en) * | 2012-12-24 | 2013-04-03 | 深圳市开立科技有限公司 | Thermal light source start protection circuit and method |
| CN203775474U (en) * | 2014-03-04 | 2014-08-13 | 沈阳 | Lamp control circuit |
| CN204994005U (en) * | 2015-09-22 | 2016-01-20 | 宋群库 | High -power LED lamp protection circuit |
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2015
- 2015-09-22 CN CN201510606729.8A patent/CN105120578B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN105120578A (en) | 2015-12-02 |
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| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Shunling Inventor before: Song Qunku |
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| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170824 Address after: 225654 Gaoyou City, Jiangsu Province town industrial concentration area Patentee after: YANGZHOU JINZHAN LIGHTING ELECTRICAL APPLIANCE CO.,LTD. Address before: 036002, No. 9, Village Lane, Songzhuang Town, Yangcheng County, Yangcheng County, Shanxi, Jincheng Patentee before: Song Qunku |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 |
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| CF01 | Termination of patent right due to non-payment of annual fee |