Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!emory!att!bu.edu!telecom-request From: gaarder@theory.tn.cornell.edu (Steve Gaarder) Newsgroups: comp.dcom.telecom Subject: Re: How do You Hook up a Phone for a Play? Message-ID: Date: 23 Feb 91 18:41:13 GMT Sender: news@bu.edu.bu.edu Organization: TELECOM Digest Lines: 12 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 153, Message 13 of 13 The simplest thing, seems to me, would be to use a ring generator, since ringers are tuned to 20 HZ and don't work well at other frequencies. The easiest unit to use just might be one of those hand magnetos -- just what phones used to use. If you're at a school, there's a good chance the science dept has one or two for demos. Otherwise, try Edmund Scientific. Fair Radio Sales often has magneto phones, and they also have a 20HZ vibrator-type ring generator that works from 100 VDC input. Steve Gaarder gaarder@theory.tn.cornell.edu