2 boxxxx :)

[kt315]

hi Qiaozhi. you are welcome. good link in our world on all soft list, very detailed and useful information http://www.djvu-soft.narod.ru/
but all are only in russian here.
(this site may be slow working for your connect)

all the best

[aft_72005]

Hi KT315
are there another metal detector books in this link:
http://publ.lib.ru/ARCHIVES/M/
THANKS.

[Qiaozhi]

Hi KT315
are there another metal detector books in this link:
http://publ.lib.ru/ARCHIVES/M/
THANKS.

Good question
It could take us non-Russian speakers ages to decypher this.

[nelson]

Two box detector

Hi Shahab.
How is yor TR Locator functioning?
Mine just need to get coils and support working and i hadn´t to much time this days to get it finish.
The circuit is working. I had tested all frequencies genereted buy the circuit, and no problem. Just i need to finish support and coils.
Regards
Nelson

Here is my TR circuit:

[Shahab]

Hi Nelson.

I am busy these days . . .

I have 2 exams on friday & saturday.

[kt315]

Hi KT315
are there another metal detector books in this link:
http://publ.lib.ru/ARCHIVES/M/
THANKS.

hi. sorry, nothing on MD topic. the books are such rare as an recovery of radium from the ground in our world.

[aft_72005]

Hi KT315
Yes ,difficult because all books without any
Name in this link :
http://publ.lib.ru/ARCHIVES/M/

Thanks.

[kt315]

I see the copy but in new release (!) enjoy.
http://publ.lib.ru/ARCHIVES/M/''Mass...v.1261.(2003).[djv+ocr].zip

[Esteban]

Hi KT315, can't open!

[kt315]

HI ESTEBAN! EMAILED YOU THE FILE.

[Esteban]

Hi KT315

Thanks very much for the info!

Esteban

[aft_72005]

Hi KT315
I can not open this link :

http://publ.lib.ru/ARCHIVES/M/'&...v.1261.(2003).[djv+ocr].zip

please send me it.
My email : [email protected]
Thanks.

[detectoman]

anyone remember to charles rakes? and history
live he? where from is he? i looking for own information these expert electronicsman

thanks for attention

detectoman

[nelson]

TWO Box tr locator

Hi Gary.
Today i finish one coil for TR locator. This was a 41 cms square coil, 150 turns of 0.4 enemaled wire.
Ok, you said that this coils are 15 mH each one, but when i measured with my L/C meter IIB i got 38 mH.
After that i check your L/C calculator and this give me 38 mH with 150 turns.
Is there any mistakes, because has i understand by the formula 38 mH is ok, but not very shure when i see the original TR locator Russian design that talks abot 38 cms in diameter coils , 150 turns with the same wire.
By the way the formula input data was 0.16 uF, 38 mH and the frequency result in 2.04 Khz
regards
Nelson

Do you have a Scope and Frequency generator?

You can determine the inductance that way.

[chemelec]

Hi Gary.
Today i finish one coil for TR locator. This was a 41 cms square coil, 150 turns of 0.4 enemaled wire.
Ok, you said that this coils are 15 mH each one, but when i measured with my L/C meter IIB i got 38 mH.
After that i check your L/C calculator and this give me 38 mH with 150 turns.
Is there any mistakes, because has i understand by the formula 38 mH is ok, but not very shure when i see the original TR locator Russian design that talks abot 38 cms in diameter coils , 150 turns with the same wire.
By the way the formula input data was 0.16 uF, 38 mH and the frequency result in 2.04 Khz
regards
Nelson

Hi Nelson, Not sure How you determined those 150 Turns for a Square Coil of that Size.
Personally I Haven't found a Square Coil Calculator that works properly.

My Square coils were actually Rectangular and only 14 Cm by 18 Cm. I just wound them by measuring the Inductance as I went.

The Exact Inductance isn't Critical because you tue it with those Caps, But 38 mH is Kind of High.
I would definately Unwind some wire.

Gary