Find CCO metal detectors. Production principles and circuit debugging

[yhl]

Find CCO metal detectors. Production principles and circuit debugging
http://geotech1.com/forums/attachmen...5&d=1275496930

[maikl]

Find CCO metal detectors. Production principles and circuit debugging
http://geotech1.com/forums/attachmen...5&d=1275496930

T is it. What do you not understand?If I was to complicated here's the simplest detector in the world (to detect coin 180mm). But not as stable as the first. On the AM radio influence external influences. Come and make it do much philosophy.

[yhl]

This circuit can detect large metal and more deeply. Increase the coil to increase the depth of it?

[yhl]

CCO

This circuit can detect large metal How deep?. Increase the coil to increase the depth of it?

[yhl]

Farmers find an easy recovery of underground old metal detector circuit. I need

[yhl]

Look, the old farmer underground metal recycling, simple detector circuit. I need