Need schematics for metal detector

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Article #19029

#19029

From: Larry Johnson
Date: Tue, 12 Apr 1988 15:32

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I would like to build a metal detector for underwater use. I'm not talking
about a toy here but the real thing. The ones I have been looking at in the
stores are in the $300 to $850 range and I don't believe that to be 
reasonable. Making a water tight box for the thing is no real big deal but
I don't know just how the more elaborate ones work. Do they have sending
and receiving coils? Phase detection? If anyone out there has one with
schematics, or an article about them, I would be most appreciative of your
help.

                                                 Larry

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!peregrine!ccicpg!leo!larry
From: larry@leo.UUCP ( Larry Johnson)
Newsgroups: sci.electronics
Subject: Need schematics for metal detector
Message-ID: <2955@leo.UUCP>
Date: 12 Apr 88 15:32:41 GMT
Organization: CCI CPD (Advanced Development), Irvine CA
Lines: 10
Keywords: you gotem?