Lrl from Italy

[mokkethon80]

yes u rigth afshin..what she say...soon.😂😂😂

[payam20]

Originally Posted by ouiarabe

hi everyone

Hello liudengyuand,
You now have 32 participations in English. You have read and written in English, but to help your friends how they helped you, you say: << My English is not good >>
It's easier to say I do not want

or say:i cant help!
is it too hard to take picture or say what you have done!
or maybe you just......as every one think.

[brs]

Hello my friends
here in this planning error

http://www.3rbz.com/uploads/86b7b7908cbc1.jpg

[payam20]

Originally Posted by brs

Hello my friends
here in this planning error

http://www.3rbz.com/uploads/86b7b7908cbc1.jpg

where?

[brs]

http://www.3rbz.com/uploads/f0e5e74fabf92.jpg

[mokkethon80]

woww.cool..pictr....is this real ..or not.work or not

[payam20]

Originally Posted by brs

http://www.3rbz.com/uploads/f0e5e74fabf92.jpg

did you ever seen schematic
and 100n capacitors beter read about theme
just for led use wire from +12 and put 1k to every possitive of led pin
as many have made this pcb they said best pcb up to now

[payam20]

Originally Posted by mokkethon80

woww.cool..pictr....is this real ..or not.work or not

do it and see

[mokkethon80]

😂😂😂doit 3cm..deep..

[taxma1981]

Originally Posted by ouiarabe

hi everyone

Hello liudengyuand,
You now have 32 participations in English. You have read and written in English, but to help your friends how they helped you, you say: << My English is not good >>
It's easier to say I do not want

[zakari]

Originally Posted by mokkethon80

😂😂😂doit 3cm..deep..

hi every body

payam20'pcb work very well

[zakari]

hi payam20

please put your new pcb here

that one you put in iranian forums

that is working excelent

[du6r]

dear Franco

When i be close to circuit i notes that voltage is down and when i get away from it the voltage is rise so i cant decide if the voltage is zero at the output ( when i remove the quarts )
the read of voltage to circuit is in mini volt but away off circuit its about 1.2 v
but when i but quarts the voltage when i be near to the circuit is about 5-6 v
also when i get away from it the voltage drop down to 3v ??????????????????

c13 = 3.3n
c14 =4.7 n
on place c2 c3 c4 is 1 single capacitor 1p

one more thing in working place all voltege are same reading up but when i get out the room in the (test field) evrything is change the output is near 0 volte

[FrancoItaly]

I think that the stage is self oscillating, try to decrease C13 and C14 to original value (560pF). If in open air you have 4-6V (DC output) and if you touch the antenna the signal decreases, then the lrl is ok.

[sakher]

Hello All

Is FrancoItaly device can detecting the target if it was within pottery vessel or wooden box?

[FrancoItaly]

I don't know, I have no experience. I suppose that in an airtight container is difficult that the phenomenon has origin.

[du6r]

Originally Posted by FrancoItaly

I think that the stage is self oscillating, try to decrease C13 and C14 to original value (560pF). If in open air you have 4-6V (DC output) and if you touch the antenna the signal decreases, then the lrl is ok.

thank you i will try

regard

[Mike(Mont)]

I had trouble uploading also. Never did get it. I figure too many pixels. Does anyone know the size limit? My camera has a size setting.

[zakari]

hi all
thank you mr franco

i sure frnco's lrl work very well i revealed the copper from 9 meters distance and 60 cm depth

but i have some problems

1-the 3leds display isnt suitable maybe vu meter is better

2- reaction of my device is low when i sense a point and go far the leds not turn off

3- point pointer for me is impossible when i stand above target the led not turn off

i apply digital volt meter panel with 0.01 accuracy and connect to pin 1 of ic1a

sir franco

please put here vu meter schematic with high accuracy

can you explain about point pointer beacase i cant see the you tube videoes

[FrancoItaly]

Hi zakari,

I don't have a Vu meter schematic but you can simply connect at the output of the first operational amplifier (IC1A), instead of the comparators. However I do not consider it necessary to use a Vu meter. As it regards the slowness in the response of the LEDs, perhaps you have put too great a value for C1 (22nF), and decrease the value of C17 and C18 in the sensor Stage, from 100nF to 3300 pF.

Best Regards

[abdou2014]

[liudengyuand]

Have more friends experiment a success?

[mokkethon80]

yes.me to cant work lool succes.nobody cant help this projek complete..in my land evebody need fin the tresure the gold from ww2 japanese take the gold in the mautain seve in the hole but nobody cant fin ths gold. thats way we need this projek..but is not working😭😭

[FrancoItaly]

Hi all,

I have designed new power stage, more simple with 2 transistors instead of 1 IC. New DC amp with 1 led with variable gain and the possibility of later add 3 leds display. The latter stage is formed by transistors and not by operational amplifiers and it's more versatile since it allows to add other LEDs without modifying those already present.
Since I am not in Italy, and so I do not have my lab, I only simulated the circuits but I have not made. However they are very simple and there should be no problems.

Best Regards

[FrancoItaly]

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