Lrl from Italy - Page 15

FrancoItaly · #**351** 10-13-2014, 11:37 AM

Hi mustefa,
there is an error, pin 2 (inverting input) must be connected to R14 and gain potenziometer and the other side of R14 must be connected to RV4 cursor.
Regards

Avanturis · #**352** 10-13-2014, 10:22 PM

Quote:

Originally Posted by FrancoItaly

Hi mustefa,
there is an error, pin 2 (inverting input) must be connected to R14 and gain potenziometer and the other side of R14 must be connected to RV4 cursor.
Regards

Hello Franco !!!!
I built your LRL but not completed, you posted to see if it is built correctly.
I need your help please if you have time look !!!
1 Where to connect the antenna with 70 turns (wire is 0,40mm)?
2. Did is correct (-) polarization of the battery to connect to mass GROUND .... or where to connect?
3. Is there a way to measure the power of electricity for P2 (1-6V) or should be set on the spot where I had buried object?
Please explain to me!!
This is picture

FrancoItaly · #**353** 10-14-2014, 10:57 AM

Hi Avanturis,
The coil antenna or (better) the stylus antenna must be connected to 3 turns coil.
It is correct (-) polarization of the battery to connect to mass GROUND.
All measurements can be performed in the laboratory in the absence of metal buried. The two terminals of the coil antenna must be connected together and only one wire goes to the 3 turns coil, but, I repeat, it's better the stylus antenna.
Regards

AurumKid · #**354** 10-14-2014, 12:29 PM

Hi Franco.
Im from Philippines.
Im curious about your work. which diagram should I build, which is better with stability? the 1st or 2nd with 4066 or the last with xtal? I'm confused

FrancoItaly · #**355** 10-14-2014, 03:46 PM

Hi Aurumkic,
The better, more simple, it's with quarz.
Regards

Avanturis · #**356** 10-14-2014, 03:47 PM

Quote:

Originally Posted by FrancoItaly

Hi Avanturis,
The coil antenna or (better) the stylus antenna must be connected to 3 turns coil.
It is correct (-) polarization of the battery to connect to mass GROUND.
All measurements can be performed in the laboratory in the absence of metal buried. The two terminals of the coil antenna must be connected together and only one wire goes to the 3 turns coil, but, I repeat, it's better the stylus antenna.
Regards

Thanks FrancoItaly!
Regards

mustefa ubram · #**357** 10-15-2014, 02:18 PM

hi franco.
i made your lrl 8mhz tayp with quartz
I used the output of the micro.I connected to the input adc micro to pin emitter transistor 5.The voltage at the emitter of transistor 5 is 6 volts in standby mode.When touch the antenna decreases the voltage of about 0.5 volts.this is correct?
i used a variable capicator for lc circuit 0-70pf.with change capicator The output voltage change.
I removed the opamp circuit.Micro is able to measure the voltage change of about 1 mV.I used a 4 x 20 LCD. The change is about 1 mV full of a character of 20 characters.I measured with an accuracy of 1 mV to 20 mV change.I think this is a very high sensitivity.
Now I have a question for you:
When the steel antenna sense phenomenon.Whether the output voltage increases or decreases the output voltage as when the antenna is touched?
What level is the change of voltage ?Much more than 0.5 volts or 0.5 volts?

FrancoItaly · #**358** 10-15-2014, 04:58 PM

Hi Mustefa,
When you touch the antenna the voltage decreases with the phenomenon the voltage increases. The level of change voltage may be about 0.5V or more or less, I think it's not critical. By touching the antenna it's a way for testing the lrl. The sensitivity of your micro I think is too much, it's possible you sense the compass effect.
Regards

v_gh · #**359** 10-16-2014, 06:42 PM

Hi, I'm from Iran
I need a good gold detector, one can not help me?

mustefa ubram · #**360** 10-17-2014, 04:03 PM

hi franco
how are you today?

What is the best value for the capacitor?LC circuit?
I used a variable capacitor 0-70p.The output voltage is increased or decreased by changing amount of capacitor.
How to adjust capacitor?The minimum or maximum output voltage?

FrancoItaly · #**361** 10-17-2014, 04:12 PM

Hi mustefa,
for me the better is 3 turns and 22pF, the output 2V - 6V.
Regards

mustefa ubram · #**362** 10-17-2014, 06:49 PM

Quote:

Originally Posted by FrancoItaly

Hi mustefa,
for me the better is 3 turns and 22pF, the output 2V - 6V.
Regards

ok franco.
for detect 2v is best or 6v?

mustefa ubram · #**363** 10-18-2014, 10:38 AM

hi franco
I've tested the old buried metal.I've buried two copper bowls 6 months ago.i tested .
But it was futile

why?

FrancoItaly · #**364** 10-18-2014, 11:31 AM

hi mustefa,
test different directions and different angles of the antenna, it's also possible that the copper do not emit. For my test I have used silver and gold.
Regards

mustefa ubram · #**365** 10-18-2014, 08:16 PM

Quote:

Originally Posted by FrancoItaly

Hi Nicolas
At the time I did only test on the test but Rubin with my Lrl revealed a buried copper plate from 25 years to a depth of 60 cm to 4 m in South/North direction and 2.5 m in East/West direction.
Best Regards

hi franco
In this post you said you could reveal a copper plate.So can detect copper?
Or you could say that detect non-magnetic metals such as aluminum.
Which tayp your lrls(8mhz quartz-with 4046 or..) is the best and most sensitive?
Explain a little about the project phase comparator with 4046?

FrancoItaly · #**366** 10-19-2014, 10:39 AM

Hi mustefa,
I think the lrls can reveal all the non-ferrous metal but copper probably needs more time to emit the phenomenon. Quartz lrl is more simple to build, 4046 Lrl needs more amplification, but are substantially equal in performance. The phenomenon changes the phase and the amplitude of the amplified signal and the phase comparator of the CD4046 indicates the variations of phase with the VCO of the CD4046.
Regards

mustefa ubram · #**367** 10-19-2014, 07:25 PM

new pcb of 8mhz tayp For all friends

AurumKid · #**368** 10-20-2014, 02:57 AM

Quote:

Originally Posted by mustefa ubram

new pcb of 8mhz tayp For all friends

thanks mustefa for your attachment

regards

AurumKid · #**369** 10-20-2014, 03:15 AM

Hi Mustefa

Do you have black & white pcb layout in pdf format? Can you please post it here?

Thanks In Advance

Regards

mustefa ubram · #**370** 10-20-2014, 11:44 AM

Quote:

Originally Posted by AurumKid

Hi Mustefa

Do you have black & white pcb layout in pdf format? Can you please post it here?

Thanks In Advance

Regards

for you

AurumKid · #**371** 10-20-2014, 02:27 PM

Quote:

Originally Posted by mustefa ubram

for you

thank you

mustefa ubram · #**372** 10-20-2014, 05:55 PM

hi franco .i have question dear frenid
I've buried 3 gold pieces with salt today.How long should I wait for testing?
i made today your lrl type 4046.I think this is much more sensitive than other types.With the antenna touching or close to the antenna output 358 pin1 voltage increases.this is correct?
What is the most appropriate voltage at the base of the middle p2 ?

Avanturis · #**373** 10-21-2014, 10:50 AM

Quote:

Originally Posted by mustefa ubram

new pcb of 8mhz tayp For all friends

Dear Mustafa!
I can't open the file,can you tell me wich program to use or send me PDF file.
Regards

FrancoItaly · #**374** 10-21-2014, 11:15 AM

Hi mustefa,
in my test field gold targets with no salt emit about 1 month later.
I do not remember if touching antenna output voltage Increases the important thing is that the phenomenon causes an increase in the output voltage of IC2A.
The most appropriate voltage at the base of the middle p2 is what allows you to have the correct voltage at point X.
Regards

mustefa ubram · #**375** 10-21-2014, 03:34 PM

Quote:

Originally Posted by FrancoItaly

Hi mustefa,
in my test field gold targets with no salt emit about 1 month later.
Regards

thank you franco
Is the use salt with pieces gold effects on early emit?
my lrl with 4046 is Very sensitive to fluorescent lamps

it detect a lamp of 1meter with steel antenna.By turning the capacitor LC circuit Change in output voltage .And sensitivity to fluorescent lamp changes.Can this be a sign that the circuit works correctly.?