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Path: utzoo!watmath!wateng!padpowell
From: padpowell@wateng.UUCP (PAD Powell)
Newsgroups: net.analog
Subject: Re: Re: AC current monitor
Message-ID: <2221@wateng.UUCP>
Date: Fri, 29-Mar-85 09:50:10 EST
Article-I.D.: wateng.2221
Posted: Fri Mar 29 09:50:10 1985
Date-Received: Sat, 30-Mar-85 00:26:00 EST
References: <5139@fortune.UUCP> <445@umd5.UUCP> <446@umd5.UUCP> <447@umd5.UUCP> <2338@mit-hermes.ARPA>
Reply-To: padpowell@wateng.UUCP (PAD Powell)
Distribution: net
Organization: U of Waterloo, Ontario
Lines: 11
Summary: 

In article <2338@mit-hermes.ARPA> jpexg@mit-hermes.ARPA (John Purbrick) writes:
>The toroid is the way to go. But you don't need to cut it--just pass one lead
>(not both!) of the AC line through the hole, and wrap "some number" of turns
>of wire around the toroid then lead the ends off to the inputs of an op amp
>or better still an instrumentation amplifier. You will have created a crude

Ahem.  Why not simply use a pot core?  It is easier, comes in two pieces,
and has a slot for your sensor.  Also a nice little spool for winding
a couple of dozen turns of wire on?

Patrick Powell