CN206490876U - A kind of lighting lamp circuit with constant current function - Google Patents

Abstract

The utility model discloses a kind of lighting lamp circuit with constant current function, including button K, resistance R1, triode V1 and chip IC 1, one end connecting triode V2 of button K emitter stage and power supply E positive pole, button K other end connection resistance R1, the resistance R1 other end connects electric capacity C1, diode D1 negative electrode, triode V1 colelctor electrode and triode V3 base stage, triode V2 colelctor electrode connection resistance R4, LED lamp H and the pin 1 of chip IC 1.The utility model has that the lighting lamp circuit of constant current function is simple in construction, component is few, timer control structure is abandoned, Delayed illumination control is realized using only the mode of basic electric capacity combination triode, circuit uses constant-current driven chip simultaneously, ensure LED illumination stability, therefore have the advantages that cost is low, performance is stable and save electric energy.

Description

A kind of lighting lamp circuit with constant current function

Technical field

The utility model is related to a kind of lighting circuit, specifically a kind of lighting lamp circuit with constant current function.

Background technology

As the negative effect caused by Global Greenhouse Effect constantly shows, every country all makees energy-saving and emission-reduction in the world By the major issue that must take into consideration in native economic development, LED lighting engineering is exactly arisen at the historic moment under this background An emerging power-saving technology.Current LED illuminating products have been had been applied in daily life, with developing rapidly for LED. There is the conventional light source that present white LED light source is compared long lifespan, solid state lighting to be hardly damaged, specular removal, mercury-free are environmentally friendly, antidetonation The advantages of, future will turn into third generation light source, will bring the revolution again of lighting field.Especially delay illuminating lamp should Use, delayed lamp common at present is largely controlled using timer chip, and not only cost of manufacture is high, and less stable.

Utility model content

The purpose of this utility model is to provide a kind of lighting lamp circuit with constant current function, to solve the above-mentioned back of the body The problem of being proposed in scape technology.

To achieve the above object, the utility model provides following technical scheme：

A kind of lighting lamp circuit with constant current function, including button K, resistance R1, triode V1 and chip IC 1, One end connecting triode V2 of button K emitter stage and power supply E positive pole, button K other end connection resistance R1, resistance The R1 other end connects electric capacity C1, diode D1 negative electrode, triode V1 colelctor electrode and triode V3 base stage, triode V2 Colelctor electrode connection resistance R4, LED lamp H and chip IC 1 pin 1, triode V2 base stage connection resistance R2, resistance R2's The other end connects electric capacity C2 and triode V3 colelctor electrode, diode D1 anode connection resistance the R4 other end and transistor V4 Drain electrode, power supply E negative pole connection electric capacity the C1 other end, resistance R3, triode V1 emitter stage, triode V3 transmitting The pin 3 of pole, transistor V4 source electrode and chip IC 1, the electric capacity C2 other end connection resistance R3 other end and transistor V4 Grid, the LED lamp H other end connects the pin 2 of chip IC 1.

It is used as preferred scheme of the present utility model：The triode V1 is phototriode.

It is used as preferred scheme of the present utility model：The model AMC7135 of the chip IC 1.

It is used as preferred scheme of the present utility model：The triode V2 is PNP triode.

It is used as preferred scheme of the present utility model：The button K is touch-switch.

It is used as preferred scheme of the present utility model：The triode V2 is NPN triode.

Compared with prior art, the beneficial effects of the utility model are：The utility model has the photograph of constant current function Bright lamp circuit structure is simple, component is few, has abandoned timer control structure, using only the side of basic electric capacity combination triode Formula realizes Delayed illumination control, while circuit uses constant-current driven chip, it is ensured that LED illumination stability, therefore with cost Low, performance is stable and saves the advantage of electric energy.

Brief description of the drawings

Fig. 1 is the circuit diagram of the lighting lamp circuit with constant current function.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belongs to the scope of the utility model protection.

Referring to Fig. 1, a kind of lighting lamp circuit with constant current function, including button K, resistance R1, triode V1 With chip IC 1, one end connecting triode V2 of the button K emitter stage and power supply E positive pole, button K other end connection Resistance R1, resistance the R1 other end connect electric capacity C1, diode D1 negative electrode, triode V1 colelctor electrode and triode V3 base Pole, triode V2 colelctor electrode connection resistance R4, LED lamp H and the pin 1 of chip IC 1, triode V2 base stage connection resistance R2, resistance the R2 other end connect electric capacity C2 and triode V3 colelctor electrode, and diode D1 anode connection resistance R4's is another End and transistor V4 drain electrode, power supply E negative pole connection electric capacity the C1 other end, resistance R3, triode V1 emitter stage, three The pin 3 of pole pipe V3 emitter stage, transistor V4 source electrode and chip IC 1, electric capacity C2 other end connection resistance R3's is another End and transistor V4 grid, the LED lamp H other end connect the pin 2 of chip IC 1.

Triode V1 is phototriode.The model AMC7135 of chip IC 1.Triode V2 is PNP triode.Button K For touch-switch.Triode V2 is NPN triode.

Operation principle of the present utility model is：Power supply E in circuit exports 12V DC voltages and powered to whole circuit, its In, phototriode V1 is as light-dependent control element, when daylight is sufficient, triode V1 conductings, even if now pushing button K, and three Pole pipe V3 base stage also must not electricity, only night or during rainy weather insufficient light, push button K, triode V3 base stage is obtained Electricity, while power supply E is charged by button K, resistance R1 to electric capacity C1, charging causes V3, V2 successively conducting, core as V3 bias current Piece IC1 obtains electric, and chip IC 1 is decompression constant-current driven chip, and the LED lamp H triggerings being connected in chip IC 1 are lighted, and are now unclamped Button K, electric capacity C1 are discharged by triode V3 base stage, therefore triode V2 and triode V3 constant conductions, and LED lamp H is held Continuous work, therefore, it can be seen from the general principle of capacitor charge and discharge, delay time can be changed by changing electric capacity C1 capacitance.

Claims (6)

1. a kind of lighting lamp circuit with constant current function, including button K, resistance R1, triode V1 and chip IC 1, its It is characterised by, one end connecting triode V2 of the button K emitter stage and power supply E positive pole, button K other end connection electricity R1 is hindered, the resistance R1 other end connects electric capacity C1, diode D1 negative electrode, triode V1 colelctor electrode and triode V3 base Pole, triode V2 colelctor electrode connection resistance R4, LED lamp H and the pin 1 of chip IC 1, triode V2 base stage connection resistance R2, resistance the R2 other end connect electric capacity C2 and triode V3 colelctor electrode, and diode D1 anode connection resistance R4's is another End and transistor V4 drain electrode, power supply E negative pole connection electric capacity the C1 other end, resistance R3, triode V1 emitter stage, three The pin 3 of pole pipe V3 emitter stage, transistor V4 source electrode and chip IC 1, electric capacity C2 other end connection resistance R3's is another End and transistor V4 grid, the LED lamp H other end connect the pin 2 of chip IC 1.

2. a kind of lighting lamp circuit with constant current function according to claim 1, it is characterised in that three pole Pipe V1 is phototriode.

3. a kind of lighting lamp circuit with constant current function according to claim 1, it is characterised in that the chip IC1 model AMC7135.

4. a kind of lighting lamp circuit with constant current function according to claim 1, it is characterised in that three pole Pipe V2 is PNP triode.

5. a kind of lighting lamp circuit with constant current function according to claim 1, it is characterised in that the button K is touch-switch.

6. a kind of lighting lamp circuit with constant current function according to claim 1, it is characterised in that three pole Pipe V2 is NPN triode.