SM Ling wrote: > Can you enlighten me why you need something that can switch 230Vac as well > as some relatively low DC voltage at the same time? > > Should you be using different type of switches? I am puzzled as I can't > think of many reasons. > > Cheers, Ling SM Ah - some clarification needed! The switching would be either/or. I.E. Either 230Vac Or 18V dc. I just want to use a single common component to do this and as I said in my OP, I think that the frequency of switching would rule out a relay. Alan -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads