Re: measuring milli-gauss a.c. magnetic fields

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Article #15342

#15342

From: G. Stewart Beal
Date: Mon, 23 Nov 1992 16:23

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In article <JOHN.92Nov20144516@django.think.com> john@django.think.com (John Richardson) writes:
>Does anyone know of a *simple inexpensive* circuit or device for
>measuring milli-gauss a.c. magnetic fields? 
>
How about a small, 1 layer coil of specified cross section, connected to a
high gain, calibrated (AC) amplifier and full wave rectifier?
Do the calculations to figure the coupling, and therefore the flux from the
DC voltage on the output.
 
Regards, Stu Beal, VE3MWM, U009@CS.CCIW.CA,
National Water Research Institute, Burlington, Ontario, Canada.
 
"She was a savage beauty - wild, untamed (or at least not house-broken yet)."

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From: u009@csx.cciw.ca (G. Stewart Beal)
Subject: Re: measuring milli-gauss a.c. magnetic fields
Organization: Canada Centre for Inland Waters
Date: Mon, 23 Nov 1992 16:23:42 GMT
Message-ID: <1992Nov23.162342.28322@csx.cciw.ca>
References: <JOHN.92Nov20144516@django.think.com>
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