Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!hp4nl!alchemy!mndell
From: mndell@cs.ruu.nl (Mike Dell)
Newsgroups: sci.electronics
Subject: Re: recording via induction <> adding a singal via induction
Keywords: inductive audio signal adding to a cable
Message-ID: <1991Mar14.104725.18565@cs.ruu.nl>
Date: 14 Mar 91 10:47:25 GMT
References: <3012@hexagon.se> <4793@kitty.UUCP>
Organization: Utrecht University, Dept. of Computer Science
Lines: 27

In <4793@kitty.UUCP> larry@kitty.UUCP (Larry Lippman) writes:

>In article <3012@hexagon.se> daniel@hexagon.se (Daniel Deimert) writes:
>>I was wondering if it would be possible to record an analogue signal
>>(i.e.  the one in a loud-speaker's cable) on a tape recorder.  Or rather
>>if the resulting signal is of good or poor quality.  S/N ratio?
>
>	One can obtain a reasonably good signal through use of an inductive
>clamp-on current probe intended for oscillographic measurement purposes.
>Both Tektronix and Hewlett-Packard manufacture such probes, which permit
>a conductor diameter up to about 3/16 inch.  It is necessary to amplify
>the output of the current probe.  It is also important to remember that
>the current probe goes over only *one* conductor of a cable.


  Would it also be possible to PUT a signal on a cable from a microphone
  to a recorder with induction? What would one need for it?


  Mike


-- 
Mike Dell, (DCS)
P.O. Box 134, 3956 ZT Leersum, The Netherlands.
Telephone: +31 3434 56478
Telefax  : on request