TESORO GOLDEN SABRE

[kt315]

Sure that 2x4148 is not equal 2V7 zener. As I understand KT315 is not suggesting of 2x4148 use, but zener 2V7 in reverse ("pinki") orientation and this is not proper. Probably 2x4148 use is from original TGS schematic or some mod I dont know. So far I never dealt with this schematic.

Nice to meet you here in "america" friend.

The lunatic is in my head (c)

I say - your schematic is WORKING TOO. but why you use Zener if Zener is WORKING as the equivalent of the diode in your schematic? GET BACK TO LEGENDARY CLASSIC-TESORO SCHEMATICS and do not draw wheeze.

NE PORI GORIACHKU, PAREN'!

[ivconic]

Yes indeed, small missunderstanding we have here.

"America" is everywhere, where man can find friends. PM service is still availablle on "hobidetektori" forum. So...anything You want just write there. I'll be glad to hear from You. I am there every day, checking pm's and advertisments..
Cheers!

[WM6]

Sure that 2x4148 is not equal 2V7 zener. As I understand KT315 is not suggesting of 2x4148 use, but zener 2V7 in reverse ("pinki") orientation and this is not proper. Probably 2x4148 use is from original TGS schematic or some mod I dont know. So far I never dealt with this schematic.

Nice to meet you here in "america" friend.

[ivconic]

WM6...i think KT315 is right. Usuall drop at 1N4148 is 0.6-0.7V. So...to replace zener 2V7 there it is quite logicall to use 4x1N4148 in reverse direction (KT315 suggested 2 diodes??). But! This only, if there is any need to limit voltage, of course. Personally..i dont see a reason to limit voltage there. It is faint signal anyway. 1M instead 470K and 1M3 instead 1M in those stages really do rise level of amplification, but not maintaining proper linearity. Therefore suggested mod is a bit tricky and in most of cases it will result with instabillity on real soil. Further... treshold feature added there can help a bit to "clean" and limit audio behavior, but from my previous experiences i seriouslly have doubts that it will be enough to solve known TGSL problems with audio.
WM6 - best regards, friend!

[WM6]

strangely hear similar things from specialist... could you to draw how this circuit part works via signals' levels on time axis? please.

Hi, I am not discuss about schematics in total or partial module funktioning. If you are interested in signals and its time stamps you can use one of electronic circuit simulator. I am not in mood to do such things this time.

But if first green diode orientation is correct, then green zener is corect and pinki zener is unproper oriented. In case of use zener of 2,7V I can only suggest this solution (blue draving) for 100k resistor (of course R 50k can be 47k or something near this value) :

[peroon]

Of course , who being you , Patient? ... you worry own care and stop spit at other people.

My English is not so good, but your is horrible!
I am not spitting "at another people", i am just saying your mod is not good. Why am i saying that? Simply because i know. I already checked many simillar mods and do know what makes sence and what does not make sence.
Also; looking at White's Classic schematic and copying some things from it to TGSL does'nt make you enough smart and conversant. You maybe think you're smart - but you're not. There are people on this forum who already passed by the paths, which you are presently on. I feel huge sorry for you.

[kt315]

Orientation of magma's zener is OK. Regulary diode act as zener in oposite direction.

strangely hear similar things from specialist... could you to draw how this circuit part works via signals' levels on time axis? please.

[Magma]

Wow! This forum is full with various "Sherlocks"! Another one just joined the club!
"Are you sample" ???? What kind of question is that? What was the meaning of that question?
If you are satisfied with your mod - i am even more satisfied. No problem.
Still your mod is total nonsence; about to fool and confuse any eventual new builder here. But...who am i to judge? Whatever...don't worry, be happy!

Of course , who being you , Patient? ... you worry own care and stop spit at other people.

[peroon]

Are you sample , or is that yours theory opinion?
For me, is strongly stable an the soil.
Peron or Ivconic

Wow! This forum is full with various "Sherlocks"! Another one just joined the club!
"Are you sample" ???? What kind of question is that? What was the meaning of that question?
If you are satisfied with your mod - i am even more satisfied. No problem.
Still your mod is total nonsence; about to fool and confuse any eventual new builder here. But...who am i to judge? Whatever...don't worry, be happy!

[old_stalker]

Stability and once again stability.
Certainly Ivconic.

[Magma]

Zener there!? It is copied from White's Classsic. Also on Caesar too (serbian "most wanted"). Also those 1M3 (1M2) resistors. Complete nonsence! To omit Sensitivity there is also huge nonsence! That detector will run unstabille producing lot of falses on soil. Maybe is "deep" in air, but 30cm on denar is not so "deep" at all. This "mod" is just made to confuse more and presents complete nonsence.

Are you sample , or is that yours theory opinion?
For me, is strongly stable an the soil.
Peron or Ivconic

[WM6]

Magma, Zener D12 would be inverted in your schematic. are you agree?

Orientation of magma's zener is OK. Regulary diode act as zener in oposite direction.

[peroon]

Zener there!? It is copied from White's Classsic. Also on Caesar too (serbian "most wanted"). Also those 1M3 (1M2) resistors. Complete nonsence! To omit Sensitivity there is also huge nonsence! That detector will run unstabille producing lot of falses on soil. Maybe is "deep" in air, but 30cm on denar is not so "deep" at all. This "mod" is just made to confuse more and presents complete nonsence.

[kt315]

D12 is so set in mine diagram and mine detector.

brrrrr....
then you could be return to 1N4148. here is not deep sense to put Zener vice diode. your Zener is working as ORDINARY DIODE you get big level drop for following op-amp, friend... the sound will crazy...

[Magma]

Foma.
Obyasni please, chto eto dast na praktike? Est' uvelichenie glubini obnaruzheniya bez raspada signala.

I have done so on its detector. The Range of the regulation to sensitivity more.
But earlier were a spurious signals, which I could not take away.

If enlarge R44, maximum sensitivity will less.
[/QUOTE]

FOMA...raspad signala ? adjust C6 !