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Offline fff
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« Reply #130 on: December 01, 2011, 02:07:13 PM »
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You can not make a good discriminator with only one coil.

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Offline dr.jare
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« Reply #131 on: December 01, 2011, 03:18:43 PM »
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Yes it's true fff. But we have no other better projects...

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Offline fff
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« Reply #132 on: December 09, 2011, 01:08:30 PM »
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For  better discrimination necessary to use schematic with two coils - receiver and transmitter.

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Offline deep max
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« Reply #133 on: December 09, 2011, 01:23:14 PM »
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Hi fff, you can explain how to set coil (transmiter and receiver) in pulse induction metaldetector? Smiley

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Offline dr.jare
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« Reply #134 on: December 09, 2011, 03:59:02 PM »
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Hi deep max . Here are answers to this link 

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http://geotech1.com/~moreland/forums/showthread.php?t=13074
  Through implementation of the induction balance (TX and RX) for PI detectors (also for VLF) is a necessary and "ground balance".

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Offline waseem2005
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« Reply #135 on: January 13, 2012, 02:14:13 PM »
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does any one made complete goldscan IV PI metal detector ?
is it stable?
what about the depth?
what about the operating frequency?
what about gold discrimination?
If every thing ok,attach the schematic and PCB in forum.
Best Regards

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Offline williamsingr
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« Reply #136 on: March 21, 2012, 11:25:53 AM »
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Is this something that is easy to follow and build, I can build anything with wood but electronics is all new to me ??

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