At 09:56 AM 2/22/01 -0500, you wrote: >Thats what I thought of also. But the same thing about voiding the rating >came up. Probably not solid-state, but IIRC, there are some low-voltage systems for home electrical use. They would have approved components. ISTR a clever design using a merged transformer/relay so you short two (galvanically isolated) wires to make the relay pull in, which could be done with a MOSFET and a bridge rectifier or a low-voltage MOSFET SSR. Best regards, =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Spehro Pefhany --"it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics