Hi, I am putting 24volts in to a 7905 to get a -5volts out. The 7905 does get warm with a large heat sink...no it gets hot. Is there something like the Black regulator that I could use to cool things down? Keeping ripple to a minimum is very important, thats why I used a linear regulator. I've always had a difficult time reducing ripple. Any help is appreciated. Thanks, Fred >Luberth, the 7805 will take 24VDC. It might heat up a little and you may >have to use a heat sink. > >Sid _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body