PCB shematic for Discovery TF-900 coils

[Sneshko]

Dear friends!
Please Help!
I need shematic for PCB coils of Discovery TF-900.
The forum is set for a PCB coils for White`s TM808: http://www.geotech1.com/forums/showt...oil-inductance
Can someone help me with PCB shematic of Discovery TF-900 coils?
Forward very much appreciate it!
Regards!
Sneshko

[Sneshko]

Dear friends!
Help for coils from Discovery TF-900 and I still needed!
Regards!
Sneshko

[kt315]

coils, or on serbskim mova ANTENNA, are the transformers with one (ONE) closed-mounted (CLOSED MOUNTED TOGETHER
ON THEIR ENDS/BY ENDS) winding-ring for:
- TX, that is output winding
- RX, that is input winding.

ferrite ring is the core of the transformer, and there are input output windings on the core.

[Sneshko]

Thanks for answering KT315!
No need to write with a lot of capital letters? I see very well.
That's what you wrote - I know.
I do not know the parameters of the coils of the detector Discovery TF-900: TX & RX inductance and resistance.
I got one demolished DISCOVERY TF-900.
There are no PCB from the coils.
I want to make a PCB for the TX and RX probes with ferrite rings, but I do not know the value of a power components.
I saw on the forum that you gave the PCB to Whites TM-808: http://www.geotech1.com/forums/showt...oil-inductance
I hope someone has to divide the PCB for DISCOVERI TF-900.
Once again - thank you for answered!
Regards!
Sneshko

[kt315]

TX = 645uH - 1,Ohm
RX = 175mh - 113,Ohm

TX - Витки посчитаны - 26 витков. Кольцо разбито . Размеры кольца примерно 22х14х13 (D d h).
Емкость 1,03 uF При частоте Tx=6.6к индуктивность должна быть 570uH, тогда проницаемость такого кольца порядка 600.

if you are real serbian you have to read this w/out translation LOL!

[maikl]

coils, or on serbskim mova ANTENNA, are the transformers with one (ONE) closed-mounted (CLOSED MOUNTED TOGETHER
ON THEIR ENDS/BY ENDS) winding-ring for:
- TX, that is output winding
- RX, that is input winding.

ferrite ring is the core of the transformer, and there are input output windings on the core.

That's not right... in Serbian: coils - kalemovi (калемови) no antenna - antena (антена)... is accurate to use the word winding - namotaj (намотај)...

[kt315]

ok! namotaj provod na sheiu ivkonika i zatiani! LOL!

[Sneshko]

TX = 645uH - 1,Ohm
RX = 175mh - 113,Ohm

TX - Витки посчитаны - 26 витков. Кольцо разбито . Размеры кольца примерно 22х14х13 (D d h).
Емкость 1,03 uF При частоте Tx=6.6к индуктивность должна быть 570uH, тогда проницаемость такого кольца порядка 600.

if you are real serbian you have to read this w/out translation LOL!

KT315!
Thank you very much for the help!
I see that the parameters for TX and RX coil same for Whites TM-808 and for Discovery TF-900.
I hope I managed to make a PCB coil for Discovery TF-900.

Да, конечно! Я прекрасно понимаю, что вы написали дорогой Анатолий.
Спасибо за разъяснение!

Regards!
Sneshko

[kt315]

i gave for tm-808... but tf900 is same at basic.

Мой вариант.rar

[kt315]

...................

[Sneshko]

Thank you very much kt315!
And your data will be helpful!
Regards!
Sneshko

[Temistocle]

Tf 900 Automatic

Anche io ho un Discovery TF 900 Automatic che era sordo. Appena comperatoandava molto bene tanto che lo preferivo al Tm808. Sono impazzito per ripararlo non avendo allo schema. Ho ripassato la componentistica ma tutto era a posto, il circuito Rx ok; il tx emetteva ma per un falso contatto sull'antenna in alluminio non c'? segnale di emissione. Ora sento le monete nel portafoglio e la fibbia della cinta. Mi piacerebbe avere lo schema elettrico anche perche' i due trimmer interni sono regolati a occhio, senza nessuna misura sul circuito. Grazie dall'Italia.

[Jose]

Here is a schematic of the TM800, with details of the coil, apparently similar to the TF-900.
https://www.geotech1.com/forums/show...hp?21254-TM800