TESORO GOLDEN SABRE

[paku]

now problem noise again
need help how to
measure voltage
from

LM358
LM393
Lm308
LF353

All i see on schematic Pin 4 is 5v and pin 8 and 7 is 8v

[paku]

the deep is not same bro lost to much deep but all noise sound is gone
and very stable 1euro i got about 28cm
small gold ring about 25cm

[seadoggy]

hahaha now i have fix my tgsl but i dont know working in outside or not
but now is working find
i change
caps 15nf to 10nf
sens pot 10k to 25k

So bro do you have sound when you touch the box of TGSL??,how about deep same or ??

[paku]

hahaha now i have fix my tgsl but i dont know working in outside or not
but now is working find
i change
caps 15nf to 10nf
sens pot 10k to 25k

[paku]

http://www.lautsprechershop.de/index...hwingkreis.htm

http://www.lautsprechershop.de/index_hifi_de.htm?http://www.lautsprechershop.de/tools/t_schwingkreis.htm

http://www.lautsprechershop.de/index_hifi_de.htm?http://www.lautsprechershop.de/tools/t_schwingkreis.htm

http://www.do2jmg.de/article.php?show=Berechnung_Schwingkreis_%20online

attention chosse for lc circuit if caps are parallel or in serie

i dont know use this calculator

[paku]

Are you shure it is gold?
Can you try gold coin?
Rings are difficult...

i dont have gold coin bro i just have gold ring
my gold ring is real gold i buy it

[sinclairuser]

Coils can go any which way just swap the leads on RX if you get a double beep.
It's better for RX to be nearer to the ground (for better signal pickup).
For less noise it would be better if the outer wires were towards electrical ground.

I use this calculator to find cap values;
http://www.siversima.com/rf-calculat...FfB3cAodsAgAzg

hi all does any one have a multi input calculator, like this one but so it will give cap values, if you know the freq and inductance.

[bernte_one]

It is OK to know that if I get one of those coils cheap.
15nF can be changed to 10nF or less
How do I calculate that value ?

http://www.lautsprechershop.de/index_hifi_de.htm?http://www.lautsprechershop.de/tools/t_schwingkreis.htm

http://www.lautsprechershop.de/index_hifi_de.htm?http://www.lautsprechershop.de/tools/t_schwingkreis.htm

http://www.lautsprechershop.de/index_hifi_de.htm?http://www.lautsprechershop.de/tools/t_schwingkreis.htm

http://www.do2jmg.de/article.php?show=Berechnung_Schwingkreis_%20online

attention chosse for lc circuit if caps are parallel or in serie

[sdesic]

I have strange TX graph ... it is cut off

TX is cut off, RX is one sine wave.

Maybe it is not adjusted with board or ...

[sdesic]

now i setting the GB reject ferite i cant detect silver and coper but not detect gold ring
when i tune Disc to min i can detect gold and foil

Coil inductance
TX: 5.91mH Resistance 22.0 ohm
RX: 6.62mH Resistance 23.5 ohm

Are you shure it is gold?
Can you try gold coin?
Rings are difficult...

[paku]

now i setting the GB reject ferite i cant detect silver and coper but not detect gold ring
when i tune Disc to min i can detect gold and foil

Coil inductance
TX: 5.91mH Resistance 22.0 ohm
RX: 6.62mH Resistance 23.5 ohm

[paku]

All My TGSl is default Part component only 4x 22uf replace with 4x 10uf now why my tgsl is only detect gold and copper not detect silver coin and euro coin

[paku]

take much time
take many time
take ALL time to give stable on just one detectorist hahaha i hate that

[Koala]

"For less noise it would be better if the outer wires were towards electrical ground."

Makes sense. Something that had not occurred to me . Doubt it will make much difference but the sum of all little tips add up to make a greater difference.

[Silver Dollar]

Coils can go any which way just swap the leads on RX if you get a double beep.
It's better for RX to be nearer to the ground (for better signal pickup).
For less noise it would be better if the outer wires were towards electrical ground.

I use this calculator to find cap values;

http://www.siversima.com/rf-calculator/lc-resonance-calculator/?gclid=CMSuq-DfgLYCFfB3cAodsAgAzg