pulse metal detector ground balance circuit

[aojieage]

Hello everyone
I made XR-71 metal detectors, but found mineralization reflect very seriously, is there a solution yet?：D

[kt315]

yes. DEEPERS 10DD is my following project. Marauder-3. D10DD has the ground auto balance, one of modes. while in the mode a disc is not so sure adequate.

respect my friend, you are on right way.

[aojieage]

In China, many people are self-made pulse metal detectors, of course, the circuit from abroad, but does not solve the problem of mineralization.
This is what I do XR-71：D

[Davor]

You might try a bit tidier coil in DD configuration first, and play with delays.