On Tue, 17 Jul 2001, Mike DeMetz wrote: > I probably have one for an old ACE servo. ACE provided complete > schematics/theory of operation of all their radio equipment(since many were kits) > and you could order every part/component.They used the Signetics NE544 as most > all servos of the 70's-80's did. According to https://www.fmadirect.com/home.htm > all of todays servos use the same Mitsubishi chip but I don't know if it emulates the > old Signetics chip. > I also have a book with circuits from 60's-70's Almost forgot o mention -- I have some old NE544's if anyone wants to play with them. A very kind Signetics rep sent me a dozen or so back in bout '90, thy've never made it out of the antistatic foam. Dale -- A train stops at a train station. A bus stops at a bus station. On my desk I have a workstation... -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics