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  1. STIDave

    Normally-On Solid State AC switching

    Yes, it needs to be a small, PCB mount component. Max current actually switched will be about 4 amps.
  2. STIDave

    Normally-On Solid State AC switching

    The reason for the requirement is it is a requirement of the customer that if our electronic controller fails (no power), the device we are controlling will default to an "on" state. I've looked at some opto coupled mosfet output relays but haven't been able to find any that meet my 565V pk...
  3. STIDave

    Normally-On Solid State AC switching

    Hi all, I'm trying to find a method for switching AC up to 400VRMS and a requirement is that if the controller unit dies, the AC will be on, i.e. I need a "normally-on" switching method. Electro-mechanical relays are out because of industry perception of reliability - is there a solid state...

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