> Your dmm may read the average current correctly but it is the peak > current that is causing the wall wart to get hot. I don't think so. Short peaks should be covered by the filter capacitors. I think the problem is that he broke his switching supply by running it 200 times slower than designed. This causes it to function as a linear supply, so 1A out requires at least 1A in. Nobody should be surprised that a 800mA wall wart gets hot at 1A. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body