Theory:Electromagnetic Relay Usage:General Purpose Size:Miniature Protect Feature:Sealed Contact Load:Low Power
Magnetic holding relay is a new type of relay developed in recent years, and also an automatic switch. Like other electromagnetic relays, it automatically turns on and off the circuit. The difference is that the normally closed or normally open state of the magnetic holding relay is completely dependent on the role of the permanent magnetic steel, and the switching of the switching state is completed by the pulsed electrical signal of a certain width.
It has the characteristics of power saving, stable performance, small size, large carrying capacity, and superior performance than general electromagnetic relays.
1) Expand the control range. For example, when the control signal of a multi-contact relay reaches a certain value, it can change, break, and connect multiple circuits at the same time according to different forms of contact groups.
2) Zoom in. For example, sensitive relays, intermediate relays, etc., can control very large power circuits with a very small amount of control.
3) Comprehensive signal. For example, when multiple control signals are input to a multi-winding relay in a prescribed form, after a comparative synthesis, a predetermined control effect is achieved.
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, so as to realize automatic operation.
The relay is an automatic switching element with isolation function. It is widely used in remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. It is one of the most important control elements.