Tesoro Eldorado

[kt315]

......analogi TIS75.txt

[ste]

hello, I'm new to the forum. I'm going to build a tesoro eldorado. I have seen that there are many variations of PCBs, which do you recommend? you have a pattern more up to date? thank you!

[MaverickITA]

hello, I'm new to the forum. I'm going to build a tesoro eldorado. I have seen that there are many variations of PCBs, which do you recommend? you have a pattern more up to date? thank you!

They are similar, some changes regards only the oscillator and some minor parts as battery check, for example.
The result as depth is the same.

[ste]

They are similar, some changes regards only the oscillator and some minor parts as battery check, for example.
The result as depth is the same.

Thank's you!!

[Sacchetti]

Hi ivconic, i almost finish my metal detector tesero eldorado made in you circuit and i ask you what capasitor you put on pin 8 lm308

Hi Kelt,
use 100pf to compensate frequency.
It is necessary only if you use LM308, instead if you use LF353 or TL081 for example then you can remove it.