underwater waterproof Tiger Shark. VLF for salt water (not same as tesoro tiger shark)

[kt315]

new project there I see... all info is NOT mine again... an author is Alexander S.
the schematic he writes is based on following ones:
1. Groza-3
2. Groza-4GTX
3. Anker-50
4. own decisions...

[kt315]

....

[Davor]

I'm impressed.
There are several gems worth attention here. The way phases are extracted, the way of using a chopper, a real amplifier, and some more. PCBs seem nice and tidy too.
Too bad there is no 4-quadrant detection too, because in that case I could just quit searching for solutions.
I'll be looking forward to this rig development.

[hispalba]

Hi
This circuit works in salt water?
I just finished my second model waterproof case
and I want to use this case with a detector that eliminates iron.
Sincerely

[Davor]

Is the case your product or you bought it somewhere? It looks superb!

[golfnut]

I think he made it.

It looks like a protein skimmer form a marine tank S

[hispalba]

Hi
Yes, I have designed and Built this waterproof box.
Several months of work and many tests at sea, and
I want to use it with a circuit that discriminates
between different types of metals as shown here.
if it works I´ll design a pcb with this scheme
to come into my box.
Thanks.
Sincerely.

[kt315]

yes, i agree too, the housing is perfect seems. Hispalba, if you know I do only preliminary report on all project in russian sector, hoping a people
themselves notice and will be interested to find something new for themself, will bring files they see around, will build something at following process of the learning.
so the thread is here at the link
http://www.md4u.ru/viewtopic.php?f=94&t=8464&sid=31928c06380a8d3a813c 7929667f290d
and yes he writes the detector for sea environment (Black sea he is hunting).
what you may at second step... take files you see in the link and use. you may too order bare PCB from author, I think it is more productive way
if you put your cent-kopeika in his labour and project.

[hispalba]

Hi
Please can someone help me?.
I want to start a project and I need to
finish it before summer
thanks in advance.
Sincerely.

[hispalba]

Thank K315.
I will read it in this forum.
Sincerely.

[sinclairuser]

another interesting project, md4u is an exellent site but only if you understand russian, i have not found a translator that does it justice
it allways comes out as gobbledygook!

[AlexSerbin]

Good day!
I am glad that the forum had this issue.
Unfortunately, I do not speak English, and I have to use online translator.
I am Alexander Serbin (from Kharkov, Ukraine), the author of this instrument.
Special thanks KT315, for this thread in the forum.

[AlexSerbin]

that's what I did
Apologies for the image of Tesoro (love sharks)

[kt315]

I did call Alex here and he reads you. he too tries to translate your english )

[hispalba]

Hi Alex
What are your pcb's measures?
Sincerely.