I saw the black regulator discussed here in the messages before I was cut off for being a few weeks behind reading piclist. This intrigued me, and mostly as an intelectual chalange I worked on designing it to function better over a wider input range. My design is at: http://www.blars.org/blackblars1.html My junkbox doesn't have all the parts, and it will be a week or two before I get them to do any tests at all. A functioning oscilisope would be helpful as well. -- Blars Blarson blarson@blars.org http://www.blars.org/blars.html "Text is a way we cheat time." -- Patrick Nielsen Hayden -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body