Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site ucbvax.ARPA Path: utzoo!watmath!clyde!burl!ulysses!cbosgd!ucbvax!info-vax From: info-vax@ucbvax.ARPA Newsgroups: fa.info-vax Subject: pushing +5 on the 750's unibus Message-ID: <3532@ucbvax.ARPA> Date: Wed, 28-Nov-84 15:44:52 EST Article-I.D.: ucbvax.3532 Posted: Wed Nov 28 15:44:52 1984 Date-Received: Thu, 29-Nov-84 05:30:24 EST Sender: daemon@ucbvax.ARPA Organization: University of California at Berkeley Lines: 24 From: Lee MooreThe computing center here has a vax 11/750 that they want to put a UDA-50, a Deuna and a couple of other perpherials on. As you know, the UDA-50 and the Deuna are both big pigs on the +5 power supply. It didn't seem that they could co-exist on the same Unibus. Looking at the power diagram I see that one power supply feeds the whole machine (unlike the /780 which has a seperate Unibus power supply). Now, it seems to me that if they didn't have certain other hardware options that they could free up some extra amps for the Unibus. Can one really trade off amps in one part of the machine for another part of the machine? The manual suggestions it might be possible. Does anybody have experience in this? I hear that the folks at Stanford have done this successfully. thanks, lee ---- Internet: lee@rochester.arpa UUCP: {decvax, allegra, seismo, cmcl2}!rochester!lee Phone: [USA] (716) 275-7747, -5671 Physical: 43 01' 40'' N, 77 37' 49'' W