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Treasure Hunting & Metal Detecting Forum Message Boards - Detector Hunter Whites Minelab Tesoro XP > Tech Talk > Metal Detectors (Moderators: Eugene52, xavier, GoldDigger1950) >

what you need to build a detector

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xavier

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	Re: what you need to build a detector « Reply #10 on: December 07, 2009, 09:34:33 am »

Thanks Cornelius

Just one more thing on the schematic there is a B between IC2 and IC5 and A on both oscillators what do they represent?Fr being the reference oscillator?
My reference coil is build using a plastic core with a screw in and out ferrite rod it goes from +-60uH to +-200uH will that do?

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Xavier

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	Re: what you need to build a detector « Reply #11 on: December 07, 2009, 09:51:53 am »

Xavier . These points A B are just measuring points and you can forget about them . Yes Fr is the reference frequency . Your coil ( 60 -200 uH ) is ok to use . Let me know how you are doing . You know that the Leds will travel to the left and to the right . It will show you what kind of metal is close to the detecting coil . Cornelius

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xavier

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	Re: what you need to build a detector « Reply #12 on: December 07, 2009, 10:30:21 am »

Thanks Cornelius

I will construct a coil now and let you know how I?m doing.
Cap C7 is a 470p but I did not find one so I used a 500p but that?s the only component that is not as per schematic it's on L2 but I guess that it should not matter much.

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