AC Solid State Relay

AC solid state relay ssr (solid state releys) is a non-contact on-off electronic switch, which uses electronic components (such as switching transistors, bidirectionalThe switching characteristics of semiconductor devices such as thyristors ) can achieve the purpose of turning on and off the circuit without contact and spark. It is a four-terminal active device, two of which are input control terminals, and the other two terminals are output receiving terminals. control terminal. In order to achieve electrical isolation between input and output, a high-voltage professional optocoupler is used in the device.combiner . When the input signal is applied, its main circuit is in a conducting state, and when there is no signal, it is in a blocking state. The whole device has no moving parts and contacts, which can realize the equivalent of common electromagnetic relay .The same function as an electrical appliance . Its packaging form is basically the same as that of traditional electromagnetic relays. It came out in the 1970s. Due to its non-contact working characteristics, it has been widely used in many fields of electronic control and computer control.