Sometimes......doing a one-off design for your own use, doesnt justify doing it, unless of course, by nature we are engineers and think.....I bet I could do that just for fun. Back in the day, thats how amateur radio worked. I digress.... My solution to this would be Ebay. I just bought a 350W invertor for $15 including shipping. There are bigger ones on there as well. _________________________________________________________________ Get a FREE online computer virus scan from McAfee when you click here. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu