CN205565882U - Dual supply LED light modulation lamp control circuit - Google Patents

Abstract

The utility model discloses a dual supply LED light modulation lamp control circuit, including transformer W, triode V1, double base diode V2 and unidirectional thyristor Q1, 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 1 and rectifier bridge T's port 3, rectifier bridge T's 2 positive pole and the relay K that connect diode D1 of port are connected respectively at transformer W's winding N2's both ends. The utility model discloses dual supply LED light modulation lamp control circuit simple structure, components and parts are few, and the circuit adopts the dual power supply module power supply that has the battery, also can normally work when meetting the outage, and two kinds of power mutually noninterferes, utilize triode and double base diode to carry out on -off control simultaneously, adjusted lighting intensity that can be convenient, therefore have that the function is various, the advantage of convenient to use and stable performance.

Description

A kind of dual power supply LED Desk lamp with dimmer switch control circuit

Technical field

This utility model relates to a kind of LED circuit, specifically a kind of dual power supply LED desk lamp with dimmer switch control circuit.

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, future will become third generation light source, the revolution again of lighting field will be brought, the most function singleness of existing LED lamp, in-convenience in use, therefore need to be improved.

Utility model content

The purpose of this utility model is to provide a kind of dual power supply LED desk lamp with dimmer switch control 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 dual power supply LED desk lamp with dimmer switch control circuit，Including transformator W、Audion V1、Double base diode V2 and unidirectional thyristor Q1，The two ends of the winding N1 of described transformator W connect the two ends of 220V alternating current respectively，The two ends of the winding N2 of transformator W connect the port 1 of rectifier bridge T and the port 3 of rectifier bridge T respectively，The port 2 of rectifier bridge T connects anode and the relay K of diode D1，The other end of relay K connects electric capacity C1、Resistance R3、The port 4 of rectifier bridge T、The negative electrode of unidirectional thyristor Q1 and the negative pole of accumulator E，The negative electrode of diode D1 connects resistance R2、The emitter stage of audion V1、The contact K-1 of relay K、The fixing end of of potentiometer RP1、The sliding end of potentiometer RP1 and LED lamp H，The other end of the contact K-1 of relay K connects the positive pole of accumulator E，Another fixing end of potentiometer RP1 connects resistance R1，The colelctor electrode of the other end connecting triode V1 of resistance R1、The emitter stage of double base diode V2 and the other end of electric capacity C1，The base stage of audion V1 connects the second base stage and the other end of resistance R2 of double base diode V2，First base stage of double base diode V2 connects the control pole of resistance R3 and unidirectional thyristor Q1，The anode of unidirectional thyristor Q1 connects the other end of LED lamp H.

As preferred version of the present utility model: described relay K is normally-closed contact relay.

Compared with prior art, the beneficial effects of the utility model are: this utility model dual power supply LED desk lamp with dimmer switch control circuit simple in construction, components and parts are few, circuit uses the dual power supply module for power supply with accumulator, also can normally work when running into power-off, and two kinds of power supplys are non-interference, utilize audion and double base diode to carry out on-off control, it is possible to regulate lamplight brightness easily simultaneously, therefore there is diverse in function, the easy to use and advantage of stable performance.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of dual power supply LED desk lamp with dimmer switch control 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 dual power supply LED desk lamp with dimmer switch control circuit，Including transformator W、Audion V1、Double base diode V2 and unidirectional thyristor Q1，The two ends of the winding N1 of described transformator W connect the two ends of 220V alternating current respectively，The two ends of the winding N2 of transformator W connect the port 1 of rectifier bridge T and the port 3 of rectifier bridge T respectively，The port 2 of rectifier bridge T connects anode and the relay K of diode D1，The other end of relay K connects electric capacity C1、Resistance R3、The port 4 of rectifier bridge T、The negative electrode of unidirectional thyristor Q1 and the negative pole of accumulator E，The negative electrode of diode D1 connects resistance R2、The emitter stage of audion V1、The contact K-1 of relay K、The fixing end of of potentiometer RP1、The sliding end of potentiometer RP1 and LED lamp H，The other end of the contact K-1 of relay K connects the positive pole of accumulator E，Another fixing end of potentiometer RP1 connects resistance R1，The colelctor electrode of the other end connecting triode V1 of resistance R1、The emitter stage of double base diode V2 and the other end of electric capacity C1，The base stage of audion V1 connects the second base stage and the other end of resistance R2 of double base diode V2，First base stage of double base diode V2 connects the control pole of resistance R3 and unidirectional thyristor Q1，The anode of unidirectional thyristor Q1 connects the other end of LED lamp H.

Relay K is normally-closed contact relay.

nullOperation principle of the present utility model is: power module is by transformator W、Rectifier bridge T、Relay K and accumulator E composition，When line voltage is normal，220V line voltage is through transformator W blood pressure lowering、It is added in relay K after rectifier bridge T rectification，Relay K turns on，Its contact K-1 disconnects，Accumulator E does not access circuit，Electric capacity C1 is charged by potentiometer RP1 process，Potentiometer RP1 is for regulating the charging interval of electric capacity C1，When electric capacity C1 charging complete is enough，Audion V1 turns off，Double base diode V2 turns on，Its first base potential raises，Unidirectional thyristor Q1 turns on，LED lamp is lighted，Audion V1 is the driving of double base diode V2，The discharge and recharge time of electric capacity C1 determines the switching frequency of double base diode V2，Therefore regulator potentiometer RP1 can conveniently regulate lamp brightness，When running into civil power power-off，Relay K dead electricity，The K-1 adhesive of its contact，Powered to circuit by accumulator E，Diode D1 is non-return diode，Prevent accumulator from affecting the action of relay K.

Claims (2)

1. null1. a dual power supply LED desk lamp with dimmer switch control circuit，Including transformator W、Audion V1、Double base diode V2 and unidirectional thyristor Q1，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，The two ends of the winding N2 of transformator W connect the port 1 of rectifier bridge T and the port 3 of rectifier bridge T respectively，The port 2 of rectifier bridge T connects anode and the relay K of diode D1，The other end of relay K connects electric capacity C1、Resistance R3、The port 4 of rectifier bridge T、The negative electrode of unidirectional thyristor Q1 and the negative pole of accumulator E，The negative electrode of diode D1 connects resistance R2、The emitter stage of audion V1、The contact K-1 of relay K、The fixing end of of potentiometer RP1、The sliding end of potentiometer RP1 and LED lamp H，The other end of the contact K-1 of relay K connects the positive pole of accumulator E，Another fixing end of potentiometer RP1 connects resistance R1，The colelctor electrode of the other end connecting triode V1 of resistance R1、The emitter stage of double base diode V2 and the other end of electric capacity C1，The base stage of audion V1 connects the second base stage and the other end of resistance R2 of double base diode V2，First base stage of double base diode V2 connects the control pole of resistance R3 and unidirectional thyristor Q1，The anode of unidirectional thyristor Q1 connects the other end of LED lamp H.
2. Dual power supply LED desk lamp with dimmer switch control circuit the most according to claim 1, it is characterised in that described relay K is normally-closed contact relay.