Lrl from Italy

[edward]

I tested the circuit in another place and the results was same

I have 7 volts in my output without quartz and c13 , c14 560pf
C2 , c3 , c4 = 1 pf r10 , r12 =1k
Does your lrl work with this state and without quartz? I have 6 to 7 volts in my aoutput and when i touch the antenna the voltage decreases about 200 milivolts

What do you think that i build your first schematic( self oscilation)? Which schematic is better?

[FrancoItaly]

What do you think that i build your first schematic( self oscilation)? Which schematic is better?

If the signal at the output is stable, there is no difference.

[edward]

Yes, my lrl also works this way, in fact this lrl originated from an RF sniffer that self oscillated, later I wanted to create a lrl simpler to set up. I realized that the self-oscillation was due to the characteristics of the pcb.

I will complete this pcb and will go to test point
I have a test point with 2 grams gold at 10 cm depth buried 3 years ago and a 15 cm copper bowl buried 5 years ago at 60 cm depht

[edward]

If the signal at the output is stable, there is no difference.

Output voltage is stabe at 6.6 volt and when i touch the antenna the voltage decreases 200 milivolts

[FrancoItaly]

Output voltage is stabe at 6.6 volt and when i touch the antenna the voltage decreases 200 milivolts

Well, it's ok.

[RS_Phil]

Well, it's ok.

Do you have update on your newly circuit my friend FrancoItaly, I mean a PCB?

[FrancoItaly]

Do you have update on your newly circuit my friend FrancoItaly, I mean a PCB?

No you have to change the original one or add a small pcb.

[erfan]

Hello franco Italy.
I put sample of L1 and L2 in your antenna adapter for example. I want to know if you mean antenna adapter like this.(Attached picture 3)
1.There is L1=3 TURNS inside which is connected to earth in one side and connected to C10 and capacitor 100pf in other side.
2.There is L2=2 TURNS outside which is connected to earth in one side and connected to antenna in other side.
Do you confirm all these?

[FrancoItaly]

Hello franco Italy.
I put sample of L1 and L2 in your antenna adapter for example. I want to know if you mean antenna adapter like this.(Attached picture 3)
1.There is L1=3 TURNS inside which is connected to earth in one side and connected to C10 and capacitor 100pf in other side.
2.There is L2=2 TURNS outside which is connected to earth in one side and connected to antenna in other side.
Do you confirm all these?

yes, I confirm. I recommend making this change (and the amplifier antenna) only after having developed the sensor stage in the original version.

[edward]

yes, I confirm. I recommend making this change (and the amplifier antenna) only after having developed the sensor stage in the original version.

Hi mr franco

I completed the lrl

I was wrong the pcb was not self oscillation the battry was corrupt

With the switching power supply your lrl pcb is self oscillation because in the switching is a potentiometer between vcc and gnd for setting the voltage this causes passing a little current

This is a really perfect treasure detector i dont tested it on my test area yet but i tested it on a really ancient site and this reacted to the main point with very high sensivity in all directions that my last buildings from this version didnt had any reaction

Thank you for every thing mr franco

Regards

[teo]

For all of you Franco when you say in the original version I was not aware of it

[FrancoItaly]

For all of you Franco when you say in the original version I was not aware of it

I post here my original lrl.

[teo]

thanks franco

[abdou2014]

https://ibb.co/ckb8768

https://ibb.co/WDFgrg4

is this winding method is right Mr Franco ?

[FrancoItaly]

https://ibb.co/ckb8768

https://ibb.co/WDFgrg4

is this winding method is right Mr Franco ?

Yes.