What is a solid state relay?
Solid state relay SSR for short, is a new type of solid-state semiconductor device of the non-contact electronic switch devices.
Time relay below small make up to tell me about the solid state relay for everyone.
Solid state relay is a kind of two terminal to the input end and the other two terminal devices for the output side four end, middle isolation device was adopted to realize electrical isolation of input and output.
Its input only requires the control current of the small, driving power is small, can use TTL, CM0S, such as integrated circuit direct drive, the output circuit adopts a high-power transistors or bidirectional thyristor
switch features to connect or disconnect the load, to no contact, no spark of on or off the purpose of the circuit.
Dc solid state relay can be divided by use of different occasions,
DC - SSR)
And ac type (
AC - SSR)
Two, they can only make dc switch and ac switch and cannot mix.
Due to its circuit is complex, so not to do detailed introduction.
Solid state relay, press the switch forms can be classified as normally open and normally closed type;
Can be divided into the mixed type, the form of the isolation transformer isolation and photoelectric isolation, photoelectric isolation for most.
Don't know whether time relay small make up the share can deepen dear friends understanding of solid state relay.
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