Lrl from Italy

[sakher]

!

may be it is cables to suport the area with electricity!!

[liudengyuand]

Different PCB output voltage is not the same, I double pane of the output voltage is 1.86 v, but it has the sensitivity to detect metal, if increase the capacity of c2, the output voltage will rise, detection of metal is the same, so there is no relationship between the output voltage of the circuit

[FrancoItaly]

C2 doesn't influence the gain of the stage, but only the amount of 8Mhz signal that it's amplified. It's necessary to increase C13 and/or C14 for have more gain.

[sakher]

C2 doesn't influence the gain of the stage, but only the amount of 8Mhz signal that it's amplified. It's necessary to increase C13 and/or C14 for have more gain.

I have c13=c14=500pf can i increase it to 600pf ?

[abdou2014]

Yes you can

[sakher]

thank you abdou2014

[volverint]

Yes, I am very good, I today again found a pile of COINS in 30 m distance, it is 1.5 metres deep

Do you share the project ?

[liudengyuand]

I am improving it, I think is more convenient to adjust the machine, not to question its depth, it is better than any pulse machine to depth, a silver 20 mm in diameter, if it has a long time, it can reach at least 2 m depth and scanning distance of 20 meters

[mokkethon80]

liudengyuend..where ur proyek picture please show to me.thank

[liudengyuand]

Because my English is not good, don't send pictures in this BBS, I uploaded several times have failed

[volverint]

Because my English is not good, don't send pictures in this BBS, I uploaded several times have failed

thank you liudengyuand but we are waiting

[Qiaozhi]

Because my English is not good, don't send pictures in this BBS, I uploaded several times have failed

It is simple to upload images to the forum.
Click on the "Manage Attachments" button, browse to the image on your computer, and select "Upload".

[afshin]

This is not a simple project, it requires a reasonable PCB, use with everyone there is huge difference between components, you need to carefully check, 1 pf capacitor, enough to affect your output, distance is not wrong, I said detected 30 m away a pile of copper wire, its depth of 1.5 m

liudengyuand , your saying is
contradictory! First you said about detection a pile of coin then said a pile of copper wire!!!!!!!! What do you mean?
You forget your saying soon!!!!

[liudengyuand]

Please carefully read my articles, I have no contradiction, I found the coppers, also found the silver COINS, if you believe it, can also not letter, you do not succeed? Very simple, more experiments

[ouiarabe]

My English is not good, I can't upload pictures, if you are interested, we can email communication together

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