​Function of relay

Function of relay

1) Expand the control range: for example, when the control signal of multi-contact relay reaches a certain value, the multi-channel circuit can be switched on, disconnected and connected at the same time according to different forms of contact group.

2) Amplification: for example, sensitive relay, intermediate relay, etc., a very small control quantity can be used to control the circuit with high power.

3) Integrated signal: for example, when multiple control signals are input into multi winding relay in the specified form, the predetermined control effect can be achieved through comparative integration.

4) Automatic, remote control and monitoring: for example, the relay on the automatic device, together with other electrical appliances, can form a program control circuit to realize automatic operation.