On Tue, 4 May 1999, WILLIE W. HO wrote: > Hello, > > I'm using 12C508 to control a heating device, anyone can tell me how to > firing a triacs to control the heating device on/off. > > Best Rgds, > > Willie W. HO > Hello Willie The best way to fire the triac would be an opto triac like MOC 3040. Right now, I don4t have the schematic handy, but you can eMail me privately and I4ll grab it for you. Best regards Markus Rohe