Path: utzoo!attcan!uunet!cs.utexas.edu!news-server.csri.toronto.edu!utgpu!watserv1!watmath!att!tsdiag!davet From: davet@tsdiag.ccur.com (Dave Tiller N2KAU) Newsgroups: sci.electronics Subject: Re: How to make 600VDC from 800VDC Message-ID: <1112@tsdiag.ccur.com> Date: 18 Oct 90 14:36:01 GMT References: <92@decabo.enet.dec.com> Organization: Concurrent Computer Corp. Oceanport NJ Lines: 24 In article <92@decabo.enet.dec.com> (J. Brewer) writes: - - I have a need to obtain 600VDC at about 150-200mA from an - 800VDC supply. It need not be exceptionally well regulated - voltage-wise, but does anyone have a simple solution? - (not as simple as a resistive voltage divider however!) - - Pointers to databook circuits or devices greatly appreciated. - - Thank you How about: / / ------800V------>|------>|--------/\/\/-----600v-------- / / R | 100V zener 100V (I limit) You may be able to find one 200V zener, I'm not sure, though. Choose zeners of sufficient current capability for your application. -- David E. Tiller davet@tsdiag.ccur.com | Concurrent Computer Corp. FAX: 201-870-5952 Ph: (201) 870-4119 (w) | 2 Crescent Place, M/S 117 UUCP: ucbvax!rutgers!petsd!tsdiag!davet | Oceanport NJ, 07757 ICBM: 40 16' 52" N 73 59' 00" W | N2KAU @ NN2Z