Deep-searching R-TR metal detector schematic.

[eclipse]

Sasho can I use Shottky diode (BAT85) instead of the Germanium (SFD10?

[scs]

Yes.Good idea.

[eclipse]

How about changing preamp configuration (1000 gain vs ~600 in the original schematic). Example:

[scs]

This circuit has many problems. The original schematic is the best variant. Well, you will do good if you don`t try to discover America.

[scs]

Тhe best variant AC amplifier.

[yucel1050]

Where is the problem in this circuit example

[scs]

DC stability.l are not teacher for electronic .

[stefan-s]

I also like to make a detector like this one. Do you maybe have a pcb and list of components?

[eclipse]

There is, tested and working PCB from Hammid, Felezjoo author. See the attached files. Good Luck!

[stefan-s]

Thanks!

[zakari]

hi all
i made this tr locator that is working good
thank you sasho for sharing this detector
thanks alot

zakari

[bgs]

Also works well with ne 5532 for preamplifier