Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84 exptools; site whuts.UUCP Path: utzoo!linus!philabs!prls!amdimage!amdcad!decwrl!decvax!harpo!whuxlm!whuxl!whuts!amc From: amc@whuts.UUCP (Andy Cohill) Newsgroups: net.analog Subject: coupling transformer Message-ID: <230@whuts.UUCP> Date: Thu, 15-Aug-85 11:06:19 EDT Article-I.D.: whuts.230 Posted: Thu Aug 15 11:06:19 1985 Date-Received: Tue, 20-Aug-85 01:47:11 EDT Distribution: net Organization: AT&T Bell Laboratories Lines: 16 *** REPLACE THIS LINE WITH YOUR MESSAGE *** I am building a 'smart' RS-232 interface for the BSR house controller accessories. I am having trouble locating a coupling transformer to take the 121 kHz signal and modulate it onto the 60 Hz AC line. Can anyone provide any pointers to the transformer or a company that makes that sort of thing? I am already familiar with Steve Ciarcia's articles on the subject in Byte. I don't like the way he does things. Too easy to leak 120 volts into your computer. thanks, Andy Cohill {allegra|ihnp4}houxm!whuxl!whuts!amc 201/467-7140