Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!ut-sally!utah-cs!utah-gr!stride!tahoe!unsvax!jimi!otto!rex From: rex@otto.COM (Rex Jolliff) Newsgroups: sci.electronics Subject: Re: TTL Questions Message-ID: <502@otto.COM> Date: Mon, 20-Jul-87 06:05:58 EDT Article-I.D.: otto.502 Posted: Mon Jul 20 06:05:58 1987 Date-Received: Thu, 23-Jul-87 06:46:27 EDT References: <1395@crash.CTS.COM> <1008@speech1.cs.cmu.edu> Reply-To: rex@otto.UUCP (Rex Jolliff) Distribution: na Organization: Las Vegas Sun Lines: 31 Keywords: relay driver diode Summary: you forgot your diode... Expires: Sender: Followup-To: In article <1008@speech1.cs.cmu.edu> (Paul Dietz) writes: >In article <1395@crash.CTS.COM> rpluth@pnet01.CTS.COM (Ron Pluth) writes: >> 1. What's the easiest way to go about interfacing a TTL >>output (from, say, a standard S or LS AND gate) to a relay, for >>... >... >A much easier solution is to use a low current, 5-volt relay. Then almost >any of the serious driver chips can drive it directly. Shouldn't you shunt the relay with a diode to prevent back-emf spikes?? (I don't exactly remember... It's been a while since I've done something like this...) > > >Paul H. Dietz >Carnegie Mellon University this is line counter food -- Rex Jolliff (rex@otto.UUCP, {akgua,ihnp4,mirror,sdcrdcf}!otto!rex) The Sun Newspaper - |Disclaimer: The opinions and comments in Nevada's Largest Daily Morning | this article are my own and in no way Newspaper | reflect the opinions of my employers. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - What happened to our superior space program?