Impulsowy wykrywacz metali

[Andi68]

Naughty but very instructive.

I make another attempt by connecting the coil directly to a higher voltage.

Otherwise in winter a new project, I think of the MPP or HH or nothing

Thank you for reminding me of the trimmer, that's what I planned to do

[dbanner]

Here are some more

[dbanner]

Here is good device with dual field coil. need to be translated in english

[Andi68]

I leave this circuit as it is, this becomes a small detector, similar to the scuba

Power consumption is very low, 11mA at idle, 22-24mA at one signal.

[kt315]

Here are some more

i have Proscan board, bare. 11 euro.

[Andi68]

i have Proscan board, bare. 11 euro.

[6666]

Here is good device with dual field coil. need to be translated in english

Google docs translation of text in English
I take no responsibility for the content of translation.

[dbanner]

Here is good device with dual field coil. need to be translated in english

Actually, this one has basket coil.

[6666]

Actually, this one has basket coil.

Yes I was reading on a Russian forum that particular star coil does not perform well.

[dbanner]

I seem to remember having a micro based Pi with instructions on making a dual Field coil, it was written in German language, I think. But I can't find it now. Anyways, it's not relevant to the topic.