> Ops, far away from home, now I'm back ;o) >>Presumably you are using a relay with a low voltage coil. Why not ease the >>low voltage current requirements by using a relay with a high voltage AC >>coil. >>If my presumption is correct then you will probably reduce your current >>consumption on the 5 volt rail to 45mA or less. Use a small Triac or >>thyristor to switch the relay. >It would be great IF finding 110v coil relays could be found here in >Brazil. We are in a country that your project has to be easyly >changeable, since the component distributors bring to the market >whatever they fit in their bills, and not always what the customer wants. >Oh, so nice to live in a third world... Everywhere has it's advantages and disadvantages. . As you have not knocked back my supposition that the relay is the major consumption of power then I will assume that the supposition is correct. The use of a Relay with a 110 volt coil is not an option due to unavailability. OK, presumably Relays with 5 volt, 12 volt or 24 volt coils are available. So why not energise them directly from the rectified 110 supply . Just apply pulses of 155 volts to the relay coil instead of a continuous 5,12 or 24 volt. Regards Chris Carr -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body