1, DC-controlled AC solid-state relay output terminal connected to what is the situation?
2, DC-controlled AC solid-state relay output can not accept the inductive load? Enhanced DC-controlled AC solid-state relays can not be connected to DC output.
3, there can be connected to the inductive load (inductance, need high-speed switching switch) DC-controlled DC solid-state relay? Who is offering a model? TTL control better.
DC-controlled AC solid-state relays, generally optocoupler + bidirectional thyristor. Thyristor features you should be clear.
Direct access to DC, will be out of control! Because the DC is not zero, so once the SCR can not turn off, will continue to go on until the DC power is cut off.
May 9, 2017
Because the inductive load voltage and current have a large phase difference, so the SCR is not easy to turn off, so it is not easy to control.
SCR solid state relays can not be high-speed, because it depends on the AC power of the zero-crossing, it can only be 10ms cycle.
If you want high-speed switching, you have to use high-speed MOS or IGBT tube composed of solid-state relay.
May 9, 2017