On Tue, Aug 28, 2001 at 08:22:27AM -0500, Jim wrote: > Can you somehow couple this heat-load to the > metal mower deck? (If indeed the mower deck is > made of metal.) It's not. Believe it or not it's a $5 round particleboard tabletop. But to beg the question. Since historically heatsink tabs are connected to one or the other of the transistor pins, how does one electrically isolate yet thermally couple. I know that the mica washers are supposed to work, but do they really? BAJ -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body