CN205490214U - LED power protection circuit - Google Patents
LED power protection circuit Download PDFInfo
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- CN205490214U CN205490214U CN201620244603.0U CN201620244603U CN205490214U CN 205490214 U CN205490214 U CN 205490214U CN 201620244603 U CN201620244603 U CN 201620244603U CN 205490214 U CN205490214 U CN 205490214U
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Abstract
The utility model discloses a LED power protection circuit, including transformer W, chip IC1, relay K and triode V1, the both ends of 220V alternating current are connected respectively at transformer W's winding N1's both ends, and rectifier bridge T's port 3 is connected to transformer W's winding N2's one end, are transformer W's winding N3 and relay K's contact K connected to transformer W's winding N2's the other end 1 motionless end 2, relay K's contact K is connected to transformer W's winding N3's the other end 1 motionless end 1. The utility model discloses LED power protection circuit simple structure, components and parts are few, not only have automatic voltage regulation's function, and automatic switch -over transformer winding number when meetting the overtension reaches the purpose of protection load, can also effectively prevent that the circuit that the frequent switching on and shutting down in the short time caused from damaging simultaneously, have consequently that the function is various, stable performance and convenient to use's an advantage.
Description
Technical field
This utility model relates to a kind of power circuit, specifically a kind of LED power protection circuit.
Background technology
Along with improving constantly of people's living standard, electronic equipment has become as a requisite part in life, the most various household electrical appliance bring great convenience to the life of people, work, and this kind of electronic installation is desirable that the DC source that a precision is higher, applied widely.The DC source of existing market is of a great variety, its mid and low-end products are the most, although low-end product has the advantage of price relative to high-end product, but quality is the most as one wishes, especially can be used in the manostat of electromotor, all there is the defects such as function singleness, life-span short, debugging maintenance difficult in common power supply, although and high-end product reliable in quality, safety and stability, but price is high also allows people hang back.Therefore need to be improved.
Utility model content
The purpose of this utility model is to provide a kind of LED power protection circuit, 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 power protection circuit，Including transformator W、Chip IC 1、Relay K and audion V1，The two ends of the winding N1 of described transformator W connect the two ends of 220V alternating current respectively，One end of the winding N2 of transformator W connects the port 3 of rectifier bridge T，The winding N3 of the other end connection transformer W of the winding N2 of transformator W and not moved end 2 of the contact K-1 of relay K，The other end of the winding N3 of transformator W connects not moved end 1 of the contact K-1 of relay K，The moved end of the contact K-1 of relay K connects the port 1 of rectifier bridge T，The port 2 of rectifier bridge T connects the negative electrode of diode D1、Resistance R2、Electric capacity C3、Relay K、Load A、The pin 4 of chip IC 1、The pin 8 of chip IC 1 and the pin 16 of chip IC 2，The anode of diode D1 connects resistance R1、Electric capacity C4 and the base stage of audion V1，The other end of resistance R1 connects the other end of electric capacity C4、Electric capacity C1、Electric capacity C2、Resistance R5、The emitter stage of audion V1、The emitter stage of audion V2、The port 4 of rectifier bridge T、The pin 1 of chip IC 1 and the pin 8 of chip IC 2，The other end of the collector connection relay K of audion V1，The other end of resistance R2 connects a fixing end of potentiometer RP1、The sliding end of potentiometer RP1 and the pin 7 of chip IC 1，Another fixing end of potentiometer RP1 connects the other end of electric capacity C1、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The pin 3 of chip IC 1 connects an input with door U1，The pin 1 of chip IC 2 it is connected with the outfan of door U1，The outfan with door U2 it is connected with another input of door U1，The pin 3 of chip IC 2 connects resistance R4 and two inputs with door U2，The pin 2 of chip IC 2 connects the other end and the other end of resistance R5 of electric capacity C3，The base stage of the other end connecting triode V2 of resistance R4，The colelctor electrode of audion V2 connects the other end of load A，The model of described chip IC 1 is NE555，The model of chip IC 2 is CD4024.
As preferred version of the present utility model: described diode D1 is Zener diode.
Compared with prior art; the beneficial effects of the utility model are: this utility model LED power protection circuit simple in construction, components and parts are few; not only there is the function of automatic Regulation; automatic switchover Transformer Winding number when running into overtension; reach the purpose of protection load; the circuit that simultaneously can also effectively prevent the machine that frequently switches in the short time from causing damages, and therefore has diverse in function, stable performance and advantage easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of LED power protection circuit.
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，In this utility model embodiment，A kind of LED power protection circuit，Including transformator W、Chip IC 1、Relay K and audion V1，The two ends of the winding N1 of described transformator W connect the two ends of 220V alternating current respectively，One end of the winding N2 of transformator W connects the port 3 of rectifier bridge T，The winding N3 of the other end connection transformer W of the winding N2 of transformator W and not moved end 2 of the contact K-1 of relay K，The other end of the winding N3 of transformator W connects not moved end 1 of the contact K-1 of relay K，The moved end of the contact K-1 of relay K connects the port 1 of rectifier bridge T，The port 2 of rectifier bridge T connects the negative electrode of diode D1、Resistance R2、Electric capacity C3、Relay K、Load A、The pin 4 of chip IC 1、The pin 8 of chip IC 1 and the pin 16 of chip IC 2，The anode of diode D1 connects resistance R1、Electric capacity C4 and the base stage of audion V1，The other end of resistance R1 connects the other end of electric capacity C4、Electric capacity C1、Electric capacity C2、Resistance R5、The emitter stage of audion V1、The emitter stage of audion V2、The port 4 of rectifier bridge T、The pin 1 of chip IC 1 and the pin 8 of chip IC 2，The other end of the collector connection relay K of audion V1，The other end of resistance R2 connects a fixing end of potentiometer RP1、The sliding end of potentiometer RP1 and the pin 7 of chip IC 1，Another fixing end of potentiometer RP1 connects the other end of electric capacity C1、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The pin 3 of chip IC 1 connects an input with door U1，The pin 1 of chip IC 2 it is connected with the outfan of door U1，The outfan with door U2 it is connected with another input of door U1，The pin 3 of chip IC 2 connects resistance R4 and two inputs with door U2，The pin 2 of chip IC 2 connects the other end and the other end of resistance R5 of electric capacity C3，The base stage of the other end connecting triode V2 of resistance R4，The colelctor electrode of audion V2 connects the other end of load A，The model of described chip IC 1 is NE555，The model of chip IC 2 is CD4024.
Diode D1 is Zener diode.
Operation principle of the present utility model is: 220V line voltage is through transformator W transformation, under normal circumstances, audion V1 ends, relay K is not turned on, and the contact K-1 of relay K connects not moved end 1, and therefore transformation W carries out transformation by winding N1, N2 and N3, voltage after transformation enters rectification in rectifier bridge T, the voltage exported from the port 2 of rectifier bridge T is powered to circuit, NE555 Yu R2, RP1 and C1, C2 form multivibrator, and wherein potentiometer RP1 is used for selecting surge frequency range.The pulse signal that agitator produces, from 3 foot outputs of chip IC 1, adds to 1 foot of chip IC 2 so that it is start counting up after U1.When outfan 3 foot of chip IC 2 becomes high level state, on the one hand, audion V1 turns on, load A obtains electric.On the other hand, this high level adds to the input of U1 after U2 is anti-phase, no matter now NE555 outfan why state, 3 feet locking high level states of chip IC 1 are constant.After reopening power supply, IC2 automatic clear, outfan is all low level, the most only after the time of one end, chip IC 1 just can export triggering signal again, and chip IC 2 starts again at counting, the section of preventing frequently switches on equipment in the time, and the moment start caused damages.When running into overpressure situation, voltage after transformation and rectification raises, therefore the voltage after diode D1 and resistance R1 dividing potential drop raises, audion V1 is turned on, relay K adhesive, contact K-1 connects not moved end 2, and now transformator W only has winding N1 and winding N2 to access circuit, its secondary end number of windings reduces, and reaches the purpose of blood pressure lowering.
Claims (2)
- null1. a LED power protection circuit，Including transformator W、Chip IC 1、Relay K and audion V1，It is characterized in that，The two ends of the winding N1 of described transformator W connect the two ends of 220V alternating current respectively，One end of the winding N2 of transformator W connects the port 3 of rectifier bridge T，The winding N3 of the other end connection transformer W of the winding N2 of transformator W and not moved end 2 of the contact K-1 of relay K，The other end of the winding N3 of transformator W connects not moved end 1 of the contact K-1 of relay K，The moved end of the contact K-1 of relay K connects the port 1 of rectifier bridge T，The port 2 of rectifier bridge T connects the negative electrode of diode D1、Resistance R2、Electric capacity C3、Relay K、Load A、The pin 4 of chip IC 1、The pin 8 of chip IC 1 and the pin 16 of chip IC 2，The anode of diode D1 connects resistance R1、Electric capacity C4 and the base stage of audion V1，The other end of resistance R1 connects the other end of electric capacity C4、Electric capacity C1、Electric capacity C2、Resistance R5、The emitter stage of audion V1、The emitter stage of audion V2、The port 4 of rectifier bridge T、The pin 1 of chip IC 1 and the pin 8 of chip IC 2，The other end of the collector connection relay K of audion V1，The other end of resistance R2 connects a fixing end of potentiometer RP1、The sliding end of potentiometer RP1 and the pin 7 of chip IC 1，Another fixing end of potentiometer RP1 connects the other end of electric capacity C1、The pin 2 of chip IC 1 and the pin 6 of chip IC 1，The pin 5 of chip IC 1 connects the other end of electric capacity C2，The pin 3 of chip IC 1 connects an input with door U1，The pin 1 of chip IC 2 it is connected with the outfan of door U1，The outfan with door U2 it is connected with another input of door U1，The pin 3 of chip IC 2 connects resistance R4 and two inputs with door U2，The pin 2 of chip IC 2 connects the other end and the other end of resistance R5 of electric capacity C3，The base stage of the other end connecting triode V2 of resistance R4，The colelctor electrode of audion V2 connects the other end of load A，The model of described chip IC 1 is NE555，The model of chip IC 2 is CD4024.
- LED power protection circuit the most according to claim 1, it is characterised in that described diode D1 is Zener diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244603.0U CN205490214U (en) | 2016-03-28 | 2016-03-28 | LED power protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244603.0U CN205490214U (en) | 2016-03-28 | 2016-03-28 | LED power protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490214U true CN205490214U (en) | 2016-08-17 |
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ID=56648363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620244603.0U Expired - Fee Related CN205490214U (en) | 2016-03-28 | 2016-03-28 | LED power protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205490214U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777548A (en) * | 2018-06-13 | 2018-11-09 | 湖南图强科技开发有限公司 | A kind of motor multifunctional power supply system |
| WO2020172732A1 (en) * | 2019-02-25 | 2020-09-03 | Costa Ueslei Norberto | Automatic dual-voltage device and automatic switching method for single-phase induction motors with power up to 3 hp/cv and universal brush motors wound in parallel series with power up to 3000 w and 127 v/220 v current transformers up to 3000 w |
-
2016
- 2016-03-28 CN CN201620244603.0U patent/CN205490214U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108777548A (en) * | 2018-06-13 | 2018-11-09 | 湖南图强科技开发有限公司 | A kind of motor multifunctional power supply system |
| WO2020172732A1 (en) * | 2019-02-25 | 2020-09-03 | Costa Ueslei Norberto | Automatic dual-voltage device and automatic switching method for single-phase induction motors with power up to 3 hp/cv and universal brush motors wound in parallel series with power up to 3000 w and 127 v/220 v current transformers up to 3000 w |
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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: 20160817 Termination date: 20200328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |