I know you'll get a bunch of responses telling you to buy rather than bui= ld=20 for cost-effectiveness, and I'll mine as well first .... picked up a nice= =20 small 400W unit from Home Depot for $39. Could not get better bang for t= he=20 buck anywhere, including mail-order or used.... at that time. However, if you really want to build, I have these 2 bookmarked... =09http://www.aaroncake.net/circuits/inverter.htm =09http://icc.skku.ac.kr/~won/electro/psu.html Cheers, -Neil. On Saturday 30 August 2003 09:25, paul x scribbled: > 100 W should be ok. > where to get some design info? > > I think about using one 100W car audio amplier and a 100 W > 110-5 V transfermer. > > any suggestion? > > Paul --- [This E-mail scanned for viruses] -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads