Relay actionPostTime: 2022-11-01 Views: 981 |
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Relay action Relay is an automatic switching element with isolation function, which is widely used in remote control, telemetry, communication, automatic control, electromechanical integration and power electronic equipment. It is one of the most important control elements.
The relay generally has an induction mechanism (input part) that can reflect certain input variables (such as current, voltage, power, impedance, frequency, temperature, pressure, speed, light, etc.);
There is an actuator (output part) that can control the controlled circuit "on" and "off"; Between the input part and the output part of the relay, there is an intermediate mechanism (drive part) that can couple and isolate the input, perform functional processing and drive the output part.
(1) Enlarge the control range: For example, when the control signal of the multi contact relay reaches a certain value, the multi circuit can be switched, disconnected and connected at the same time according to different forms of contact groups.
(2) Amplification: For example, sensitive relays, intermediate relays, etc. can control circuits with high power with a very small control quantity.
((3) Integrated signal: For example, when multiple control signals are input into the multi winding relay in the specified form, the predetermined control effect can be achieved through comparison and integration.
(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 achieve automatic operation. |
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