CN204442314U

CN204442314U - A kind of delay circuit

Info

Publication number: CN204442314U
Application number: CN201520152722.9U
Authority: CN
Inventors: 夏争先
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-03-18
Filing date: 2015-03-18
Publication date: 2015-07-01
Anticipated expiration: 2025-03-18

Abstract

The utility model discloses a kind of delay circuit, comprise resistance R1, rectifier bridge Q, photoelectrical coupler U1, photoelectrical coupler U2, triode VT1 and relay J.The utility model delay circuit structure is simple, use electronic component is few, cheap, adopt photoelectrical coupler U1, photoelectrical coupler U2, electric capacity C1 and electric capacity C2, effectively prevent relay J from shaking, and do not adopt digit chip element, stability is high especially, antijamming capability is strong, accurately can control delay time, be applicable to very much promoting the use of by the value changing electric capacity C1 and electric capacity C2.

Description

A kind of delay circuit

Technical field

The utility model relates to a kind of circuit, specifically a kind of delay circuit.

Background technology

In the industrial production, cooperation between equipment is extremely important, equipment room is very general with the situation of the work of cooperatively interacting by delay start, current delay control circuit is widely used in various field, the mode realizing delays time to control is also various, wherein, a lot of delay control circuit implementation is complicated, required electronic component is many and expensive, for a delay control circuit, how fine adjustment controls delay time, the marrow of this kind of circuit, it is simple that the utility model aims to provide a kind of circuit, electronic component is few and can control the delay circuit of delay time by fine adjustment.

Utility model content

The purpose of this utility model is to provide that a kind of circuit is simple, electronic component is few and can control the delay circuit of delay time, to solve the problem proposed in above-mentioned background technology by fine adjustment.

For achieving the above object, the utility model provides following technical scheme:

A kind of delay circuit, comprises resistance R1, rectifier bridge Q, photoelectrical coupler U1, photoelectrical coupler U2, triode VT1 and relay J, described rectifier bridge Q pin 1 connects load RL respectively, resistance R1 and resistance R2, rectifier bridge Q pin 2 connects rectifier bridge Q pin 4, rectifier bridge Q pin 3 connecting valve S respectively, photoelectrical coupler U1 pin 4 and photoelectrical coupler U2 pin 4, the photoelectrical coupler U1 pin 1 contact resistance R1 other end, photoelectrical coupler U1 pin 2 connects photoelectrical coupler U2 pin 2 respectively, relay J coil, diode D1 negative pole and electric capacity C3, photoelectrical coupler U1 pin 3 connects photoelectrical coupler U2 pin 3 respectively, resistance R3, resistance R4 and electric capacity C1, the electric capacity C1 other end is the contact resistance R4 other end respectively, electric capacity C2, triode VT1 emitter and the electric capacity C3 other end, the electric capacity C2 other end is the contact resistance R3 other end and triode VT1 base stage respectively, the triode VT1 collector connection relay J coil other end and diode D1 positive pole, the described resistance R2 other end connects photoelectrical coupler U2 pin 1, the described switch S other end connects 220V, the 220V alternating current other end and connects the load RL other end.

As the utility model further scheme: described photoelectrical coupler U1 and photoelectrical coupler U2 model are 4N25.

Compared with prior art, the beneficial effects of the utility model are: the utility model delay circuit structure is simple, use electronic component is few, cheap, adopts photoelectrical coupler U1, photoelectrical coupler U2, electric capacity C1 and electric capacity C2, effectively prevent relay J from shaking, and not adopting digit chip element, stability is high especially, and antijamming capability is strong, accurately can control delay time by the value changing electric capacity C1 and electric capacity C2, be applicable to very much promoting the use of.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of delay circuit.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, in the utility model embodiment, a kind of delay circuit, comprises resistance R1, rectifier bridge Q, photoelectrical coupler U1, photoelectrical coupler U2, triode VT1 and relay J, rectifier bridge Q pin 1 connects load RL respectively, resistance R1 and resistance R2, rectifier bridge Q pin 2 connects rectifier bridge Q pin 4, rectifier bridge Q pin 3 connecting valve S respectively, photoelectrical coupler U1 pin 4 and photoelectrical coupler U2 pin 4, the photoelectrical coupler U1 pin 1 contact resistance R1 other end, photoelectrical coupler U1 pin 2 connects photoelectrical coupler U2 pin 2 respectively, relay J coil, diode D1 negative pole and electric capacity C3, photoelectrical coupler U1 pin 3 connects photoelectrical coupler U2 pin 3 respectively, resistance R3, resistance R4 and electric capacity C1, the electric capacity C1 other end is the contact resistance R4 other end respectively, electric capacity C2, triode VT1 emitter and the electric capacity C3 other end, the electric capacity C2 other end is the contact resistance R3 other end and triode VT1 base stage respectively, the triode VT1 collector connection relay J coil other end and diode D1 positive pole, the resistance R2 other end connects photoelectrical coupler U2 pin 1, the switch S other end connects 220V, the 220V alternating current other end and connects the load RL other end.

Photoelectrical coupler U1 and photoelectrical coupler U2 model are 4N25.

Operation principle of the present utility model is: Closing Switch S, load RL starts working, rectifier bridge Q there is electric current to flow through, produce the AC voltage drop of about more than 1.2 volts, simultaneously by resistance R1, resistance R2 and resistance R3, resistance R4 current limliting, at positive half cycle and the negative half period of AC power, photoelectrical coupler U1, U2 has electric current to flow through in turn, voltage is limited in about 1.2 volts, to protect photoelectrical coupler, photoelectrical coupler U1, after the phototriode conducting of U2, through the transmission of wire, control the circuit be made up of triode VT1, control relay J starts, relay J normally opened contact J1-1 adhesive, control to need the synchronous electrical equipment opened, normally-closed contact J1-2 disconnects, control to need the synchronous electrical equipment disconnected.Because circuit adopts photoelectrical coupler U1, U2 and electric capacity C1, C2, effectively prevent relay J from shaking.In needs timing closing and time delay dead circuit, the capacity changing electric capacity C1, C2 very simply can realize the time controling of timing closing and disconnection, and diode D1 absorbs the self induction electromotive force that relay J coil produces, protection triode VT1 trouble free service.

Claims

1. a delay circuit, comprises resistance R1, rectifier bridge Q, photoelectrical coupler U1, photoelectrical coupler U2, triode VT1 and relay J, is characterized in that, described rectifier bridge Q pin 1 connects load RL respectively, resistance R1 and resistance R2, rectifier bridge Q pin 2 connects rectifier bridge Q pin 4, rectifier bridge Q pin 3 connecting valve S respectively, photoelectrical coupler U1 pin 4 and photoelectrical coupler U2 pin 4, the photoelectrical coupler U1 pin 1 contact resistance R1 other end, photoelectrical coupler U1 pin 2 connects photoelectrical coupler U2 pin 2 respectively, relay J coil, diode D1 negative pole and electric capacity C3, photoelectrical coupler U1 pin 3 connects photoelectrical coupler U2 pin 3 respectively, resistance R3, resistance R4 and electric capacity C1, the electric capacity C1 other end is the contact resistance R4 other end respectively, electric capacity C2, triode VT1 emitter and the electric capacity C3 other end, the electric capacity C2 other end is the contact resistance R3 other end and triode VT1 base stage respectively, the triode VT1 collector connection relay J coil other end and diode D1 positive pole, the described resistance R2 other end connects photoelectrical coupler U2 pin 1, the described switch S other end connects 220V, the 220V alternating current other end and connects the load RL other end.

2. delay circuit according to claim 1, is characterized in that, described photoelectrical coupler U1 and photoelectrical coupler U2 model are 4N25.