Tesoro Lobo some qestions

[boeNorway]

yes i found the database once , but i tried to find it agen later whit no luck

[kt315]

resonance frequencies of the coil.
on TX inside the coil is setted cap 42nF (NANO-FARADS). to RX side was connected outer cap.
the data was got by especial LC generator measured (not me).
open https://www.geotech1.com/forums/show...ked-bare-board

[Carl-NC]

The 8.5 " Tesoro Wide Scan coil came to day i measured it and here is the values


pin 1 and 3 = 4.7 Ohm 89 mH
pin 2 and 4 = 85.6 Ohm 16.3 mH

Probably you mean 0.89mH.

[boeNorway]

resonance frequencies of the coil.
on TX inside the coil is setted cap 42nF (NANO-FARADS). to RX side was connected outer cap.
the data was got by especial LC generator measured (not me).
open https://www.geotech1.com/forums/show...ked-bare-board


[ATTACH]47147[/ATTACH]

is it your opinion that this coil can work for me? (im a bit slow so i yousualy ask if i dont get it)

[boeNorway]

Probably you mean 0.89mH.

il test it agen and get back to you

[boeNorway]

Probably you mean 0.89mH.

yes that was right

[kt315]

[QUOTE=boeNorway;259980]yes that was right

[kt315]

[Op04]

I hope this is the right place to ask concerning lobo. I want to upgrade ICL7660 to LT1054 but it has differ / internal oscillator of the LT1054 runs at 25kHz while 7660 is below 10khz. Is there any External components that must change? This schematic I've use.

there may be a mistake in schematic. jude me it is principally or not. [ATTACH]21762[/ATTACH]

Thank you All.

[Qiaozhi]

I hope this is the right place to ask concerning lobo. I want to upgrade ICL7660 to LT1054 but it has differ / internal oscillator of the LT1054 runs at 25kHz while 7660 is below 10khz. Is there any External components that must change? This schematic I've use.


Thank you All.

The LT1054 is pin-compatible with the ICL7660. The internal switching frequency of the converter should not affect the operation of the detector.

[Op04]

The LT1054 is pin-compatible with the ICL7660. The internal switching frequency of the converter should not affect the operation of the detector.

Thank you so much !!!

[mermelado]

Hi: Anyone have a practical design of a proven coil for wolf? Another question, I am hesitating between building wolf or building king cobra. This one has many extras, such as noth filter and motionless mode, but Lobo seems more sensitive to gold, due to its higher operating frequency.
Thanks for your advice.

[mermelado]

Ampl?e mi pregunta:
estoy esperando la placa comprada en Ebay del tesoro del lobo ruso y veo dos cosas que no entiendo. La primera es la opci?n de una bobina no resonante, que no entiendo y m?s cuando dice que el n?mero de vueltas se determina buscando la se?al m?xima, luego s? buscan resonancia, por otro lado yo no entiendo el motivo por el que se utiliza una bobina no resonante. .
El segundo se refiere a la conexi?n de los interruptores, hay una versi?n resumida de conectarlos y no s? bien qu? ventajas o desventajas trae, aunque me sorprende que aparezca la palabra pinpoint. ?El lobo tiene este modo?
y finalmente noto que la bobina parece no estar blindada, pero su carcasa est? pintada con grafito. ?Alguien puede arrojar algo de luz sobre todo esto?

[ADJUNTE] 55968 [/ ADJUNTE]
[ADJUNTE] 55969 [/ ADJUNTE]

[Qiaozhi]

Please read the forum rules and make your posts in English.

[mermelado]

Excuse me, I know the rules, it was the Google translator who translated my message into Spanish before posting. Sorry.
Next I write the same text again in English, hopefully now it goes well:


Expand my question:
I am waiting for the pcb bought on Ebay from the Russian Wolf treasure and I see two things that I do not understand. The first is the option of a non-resonant coil, which I do not understand and even more so when it says that the number of turns is determined by looking for the maximum signal, then they do look for resonance, on the other hand I do not understand the reason for using a non-resonant coil.
The second is referring to the connection of the switches, there is a summarized version of connecting them and I do not know well what advantages or disadvantages it brings, although I am surprised that the word pinpoint appears. Does the wolf have pinpointer mode?
and finally I notice that the coil seems not to be armored, but its casing is painted with graphite. Can someone shed some light on all this?




Note: I do not post the attached images again, to avoid unnecessary duplicates.