TESORO GOLDEN SABRE

[Max]

Hi max,Qiaozhi,
Very thankful for your advise.I'll try to get a Tesoro coil to see what's difference to my home made coil.There is no Tesoro coil in my country.


Hi Max
I think my TGS seems alike yours.I can disc very thin foil too,and very sensitive to gold.

Hi,
can you disc out iron stuff totally ?

I mean, with soft iron (not steel) you must reject it unless very large objects (like big iron poles) or very near to coil (few-cm).

I , for example can reject anything in size of a 0.5kg soft iron hammer heads with both my tesoro original and my homemade coils.

This is definitive test for disc... if you can reject totally iron and still get good response with gold and expecially silver your detector is doing very good.

If you can do this... probably you don't need any original tesoro coil... but just some care with shielding, epoxing and find a suitable container for coil.

Kind regards,
Max

[zzy]

Hi,
can you disc out iron stuff totally ?

I mean, with soft iron (not steel) you must reject it unless very large objects (like big iron poles) or very near to coil (few-cm).

I , for example can reject anything in size of a 0.5kg soft iron hammer heads with both my tesoro original and my homemade coils.

This is definitive test for disc... if you can reject totally iron and still get good response with gold and expecially silver your detector is doing very good.

If you can do this... probably you don't need any original tesoro coil... but just some care with shielding, epoxing and find a suitable container for coil.

Kind regards,
Max

Hi Max,

Yes,I can disc out a big axe,or a big can very near to coil(1cm).and in DISC mode i get more 2 cm to gold than all metal mode.
Kind regards,zzy.

[ZemljakIZNS]

would be nice

For Ivconic...

Can you PLEASE post a detail layout of components of TGS- light...with labels of each component. And if it is no problem, the specific number of windings, and former, for THE ULTIMATE COIL!!!

I am a believer of TGSL!

I tried KT315's...Volkstrum SM modification and got depth of 8'' for a small coin. But the allignment of coilz drove me nuts!!!!!!!!! Don't like Crystal! Many hums. I am still trying to perfect the circuit...but...I would like to build a TGSL and hunt those coins!

Ivice moj mejl je lgator(majmunskoa)loveserbia.com...pa ako mozes...hvala unapred!

[erolunall]

Hello

You have to visit İvconic Web forum for all info
http://hobidetektori.own0.com/login.forum?connexion

Register firstly which is very easy.

Regards
Erol

[Unregistered]

Hi, I lately finised tresoro Golden sabre. It works well in DISC mode but dont work in ALL Mode. In All mode if I near it to a metallic object it will beep continuosly after it, not dependable is metal present or not. It will stop ounly if I switch for a moment to Disc mode, turn a little bit GEB pot, or turn a main switch off. Then it is silent to a next object. The otsillograms in test points looks ok. Can the problem be in coil or in PCB. It also dont depend of sensitivity pot. It can be on 2 and also will start beeping. In DISC mode on if sens on 9 no false alarms, but on 10
starts silent random beeping. I dont have inductivity meter, but after connecting tx MD start working on 15,6 kHZ, I add 4,7n capasitor parallel to 22n and now it reads 14,1 kHZ, I also maximised signal on RX and also aded 4,7n capasitor parallel to 15n. Then I tried Without this last aded capasitor but its the same it will continuosly beep in all metal mode.

[ivconic]

Last comparator goes in selfoscillations. It is very usual at TGS and pretty often. Hystrezis applied there is not enough to solve this.
Somehow speaker with its impendance has great influence on this? I can not explain this, but it is true. If your speaker is 8 ohms, than you should add 10-12 omhs resistor in serie with speaker and it will solve your problem.
Also, considering some other op-amp on LM308 place could be solution. I gained better stabillity with TL081a instead LM308, yet i lost some depths with those.
But finally i solved problem completelly with another, much better coil.
My last TGSL (in CZ5 enclosure) is rock stabille without ocassional falses at all. Even on highest sense it remains calm and silent.
Once i gained same with TL082 on LF353 place!?
I made 20 devices so far. Each one of those is story of its own!
On some i solved problem with better coil, on some other with different op-amps....!? How to establish rule? I am first to know that! I would like to know and void same problems in future, yet i dont know.
So usually i do extra "jobs" arround each new device and sooner or later problem is solved and device works "by the book".
So...you need extra nervs and try all mentioned above. Something will do the job for you. Try everything.
Regards!

[DIRCEU]

Last comparator goes in selfoscillations. It is very usual at TGS and pretty often. Hystrezis applied there is not enough to solve this.
Somehow speaker with its impendance has great influence on this? I can not explain this, but it is true. If your speaker is 8 ohms, than you should add 10-12 omhs resistor in serie with speaker and it will solve your problem.
Also, considering some other op-amp on LM308 place could be solution. I gained better stabillity with TL081a instead LM308, yet i lost some depths with those.
But finally i solved problem completelly with another, much better coil.
My last TGSL (in CZ5 enclosure) is rock stabille without ocassional falses at all. Even on highest sense it remains calm and silent.
Once i gained same with TL082 on LF353 place!?
I made 20 devices so far. Each one of those is story of its own!
On some i solved problem with better coil, on some other with different op-amps....!? How to establish rule? I am first to know that! I would like to know and void same problems in future, yet i dont know.
So usually i do extra "jobs" arround each new device and sooner or later problem is solved and device works "by the book".
So...you need extra nervs and try all mentioned above. Something will do the job for you. Try everything.
Regards!

Hi IVCONIC

I have the same problem.You said which solved completelly with another, much better coil.
I would like to know what coil is it, if possible.
Many thanks

DIRCEU

[ivconic]

Datas posted here many times, on this forum.
By "better" i mean much better Q of coil and better nulling. Considering it was handmade i do have doubts that all of you made it quite properly.Dont guess me wrong, i do not want to have doubts in your skills, only rely this on my own experiences. Making same coils one by one i realized that it can turn to neverending story - each new is much better that previous one. Same datas yet my skills improved and newer coils are much better with much better performances.
So..you just obey same datas posted here and involve more effort to make new - better coil.
Regards!

[Alexismex]

Hello Forum,
I found a old catalog from Tesoro and a export distributor list of prices...see :

Toltec 100 list: 589.00 distrib. 294.00 Printed circuit board new 130.00
Lobo 499.00 distri 249,50 board:120.00 repair+freight 40.00
Golden sabre 429.00 dist:214.5 board;75.00 repair 30.00
Diablo 349.00 dist:174.5 board:75.00 repair 30,00
Silver sabre 299.00 dist:149.50 board :65.00 repair 25.00
CutlassII : 199.00 distr:99,50 board:58.00 repair 25.00
Bandido :359.00 dist 179,50 board :100.00 repair 30.00

All printed circuit boards are wired with pots , switches and speaker (but no meter on toltec)

I must found the envelope in all my papers !!! to see the date of this ...
For me , in the "old Time, 15 o more years, Tesoro are very cool to sell the board wired of the GS for 75 Dlls...very cool... Now did not Know????
Saludos from Mexico.
Alexis

[sonar]

Ivconic, Max

take a look this...

[Max]

Ivconic, Max

take a look this...

Hi,
yes I see, but in practice is less, something 16Vpp: I've tested also with Tesoro original 9x8'' coil and measured always something around 16Vpp. What's your model definition (params) for coil ?

Kind regards,
Max

[sonar]

Yes i know Max

I just make some test on Your circuit only.

Coil is the same 5m8 - like in Your test generator...

[Max]

Yes i know Max

I just make some test on Your circuit only.

Coil is the same 5m8 - like in Your test generator...

Hi,
yes, but I don't remember now the values (was some months ago ?)... I think I've modified values from original schematic, right ?

Let me take a look at backups...

I will find answers somewhere (digging the long-time buried pile of dvds).

Kind regards,
Max

[sonar]

hmmm. no problem




its was test only remember
nothing sure... frequency and others...

[Max]

Hi,
this is one with coil params showed...

as you can see the voltage is well under 16Vpp.

But maybe you meant some other params there ?

Kind regards,
Max