A new PI metal detector G.L. Chemelec

It's working with some initial troubleshoting, not the design i would recomend. See the thread Tech Talk/large coil PI detectors and Metal Detecting/Is 45 depth possible...
 

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Not new, last update is 2014, link also is selling and as such violates our rules, link will disappear soon.
 

I believe the basic design dates somwhere around 2000, i built that some 10 yares ago, at least, i did not find it very impressive, ended among my junk projects.
 

I believe the basic design dates somwhere around 2000, i built that some 10 yares ago, at least, i did not find it very impressive, ended among my junk projects.

Thanks for the feedback. I'll look for a schematic elsewhere.
 

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