Path: utzoo!attcan!uunet!seismo!sundc!newstop!sun-barr!apple!usc!henry.jpl.nasa.gov!elroy.jpl.nasa.gov!gryphon!vector!telecom-gateway From: doug@letni.uucp (Doug Davis) Newsgroups: comp.dcom.telecom Subject: Re: Trivial Ring Detection? Message-ID: Date: 20 Nov 89 04:55:32 GMT Sender: news@vector.Dallas.TX.US Reply-To: doug@letni.lawnet.com Organization: Logic Process Dallas, Texas. Lines: 39 Approved: telecom-request@vector.dallas.tx.us X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@vector.dallas.tx.us X-TELECOM-Digest: volume 9, issue 529, message 7 of 7 In article KLH@nic.ddn.mil (Ken Harrenstien) writes: >Here's a simple problem: >I'd like to put together a system such that when a telephone call >arrives, specific light fixtures will flash throughout the house. >What's the most elegant solution? The most elegant solution is to go back to radio shluck and purchase one of the following: o 43-177 Fone Flasher 14.95 o 43-178 Fone Flasher 2 29.95 o 43-149 Mini Fone Flasher 8.95 The "Fone Flasher" provides a current limited 110 vac switch that is activated itermittently when the phone rings, this can be used to "flash" a light (flash timed to ring pulse) or with the help of a 110v SPDT relay cut the output from a set of speakers. The FF2 has a Xenon strobe and a 85db noise maker in it, Lastly the MFF is a NE2 wired across tip and ring. Oh, yeah, take your BSR alarm module set the switch to trigger on contact closure. Wire the contacts together and plug it into the 43-177. I'm guessing that there is enough time for the BSR signal to get out before the ring pulse falls (closing the internal relay). Otherwise a 110vac SPST relay will solve the problem, tie the coil side to the 110ac output on the 43-177 and the NO (normally open) contact side to the "trigger" connections on your BSR alarm module. If you opt for the second solution, remember to insulate the terminals on the relay from your fingers, it's best to put the whole thing in a box and wire a single wall plug out of it. This keeps the curious and the adventurious from hurting themselves. Doug Davis/1030 Pleasant Valley Lane/Arlington/Texas/76015/817-467-3740 {texsun, motown!sys1, uiucuxc!sys1 lawnet, attctc, texbell} letni!doug "Act first, solve problem, appologize for the mess later."