Function of magnetic latching relay

Relay is an automatic switching element with isolation function, which is widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment, and is one of the most important control elements.

Generally, relays have induction mechanism (input part) which can reflect certain input variables (such as current, voltage, power, impedance, frequency, temperature, pressure, speed, light, etc.); there are actuators (output parts) that can realize "on" and "off" control of controlled circuit; between the input part and the output part of the relay, there is an intermediate mechanism (drive part) for coupling and isolating the input, function processing and driving the output part.

1. Expand the scope of control. For example, when the control signal of multi-contact relay reaches a certain value, the multi-channel circuit can be changed, disconnected and connected according to different forms of contact groups.

2. Zoom in. For example, sensitive relay, intermediate relay and so on, with a very small amount of control, can control a high power circuit.

3. Integrated signal. For example, when multiple control signals are input into multi winding relay according to the prescribed form, the predetermined control effect is achieved through comparison and synthesis.

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