Hi, Given a source power supply nominally +12v (a car battery), can I use a 7805 and a 7905 together to get a +5/0/-5 regulated power supply? or am I misunderstanding what a negative regulator actually does? Thanks Jon -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body