Building a metal detector

[pgill]

Hi everyone,

I have been searching the web for a circuit diagram to build a metal detector, as the ones in this country (South Africa) are very expensive.
I have diagrams for the BFO type and 1 for a impulse type detector. What way are the professional ones made?

Can anybody help me with a diagram for a good detector that works?

I have a kit made detector (TR 330 Cscope, British made) I buried a couple of coins about 50mm deep, and this machine never made a noise, put the coin on the ground and lift the detector above the coin and it reads at about 100mm. So I have figured out that I am waisting my time with this machine.

I need help badly.

Regards,
Peter Gill (South Africa)

 

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[pgill]

mts this circuit looks like it will be 100 times better than a bfo circuit..... I wish you the best and look forward to hearing your progress along the way.

God bless
Peter

 

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[homefires]

Where is the rest of that schematic? That just shows the front end.

 

[Bigcypresshunter]

Keep us informed.

 

[pgill]

Excellent MTS, looking forward to seeing and hearing all about it....... Trust that the wife will forgive you

God bless
Peter