Free project PDK

[okantex]

what is the metal of the bowls
they do not look like AU or Ag

[Nicolas]

what is the metal of the bowls
they do not look like AU or Ag

Me too Okantex I have ask for him but again not answer to me
I think is copper

Reza Rohi



tested white copper 20*20

http://s5.picofile.com/file/8124100734/MOV03436.3gp.html

[reza vir]

Thanks to my dear friend
Changes did
Please check your email for test 2

[okantex]

who made changes?

I did test with 2,5cm diameter goldcoin 22k. there is no beep.

[reza vir]

Tested by a container 20 x 20 copper deposit which is 100 years old and had been doing

Add a new changelog volume

[Nicolas]

who made changes?

I did test with 2,5cm diameter goldcoin 22k. there is no beep.

Hi Okantex and Reza look here my test for my PDK
but I use here ferrite coil is same the O coil and work good near TV

But not detect fresh metal

http://www.youtube.com/watch?v=iTyToSyFgx0

[GOLDEN LILLY]

my pdk

Hello forum members, I built a pdk based on Alonso circuit. It is now operational but I think need some fine tuning because it detects long time buried metals including rusted iron, until now Im not sure how to narrow the detection for gold. 1.5 battery spark is at 1 meter.

Regards...

[Nicolas]

Hello forum members, I built a pdk based on Alonso circuit. It is now operational but I think need some fine tuning because it detects long time buried metals including rusted iron, until now Im not sure how to narrow the detection for gold. 1.5 battery spark is at 1 meter.

Regards...

Hi Dear my congratulation nice work and good distance for spark 1 meter is so better

How frequency and how specification for your coil? diameter wire and milliHenry
and what Capacitor you use? in parallel of coil I mean.

[GOLDEN LILLY]

my pdk

Hi Nicolas, here is another picture of my pdk. The coil is 80mm diameter, with 90 turns, # 28 AWG wire diameter. I don't know its inductance because I have no inductance meter, I only made estimate on some calculations, maybe 820 to 980 milihenry. I put 1n capacitor parallel to the coil because this value make the pdk sensitive. My observation is that this pdk performs better with higher inductance of coil.
Can you give me frequency for gold on my country? Philippines.

Regards...

[Nicolas]

Hi Nicolas, here is another picture of my pdk. The coil is 80mm diameter, with 90 turns, # 28 AWG wire diameter. I don't know its inductance because I have no inductance meter, I only made estimate on some calculations, maybe 820 to 980 milihenry. I put 1n capacitor parallel to the coil because this value make the pdk sensitive. My observation is that this pdk performs better with higher inductance of coil.
Can you give me frequency for gold on my country? Philippines.

Regards...

Hi Aulook
Woow my Dear friend nice work for your two PDK
Yes I see you have put capacitor 1nF and if we consider this Value

we have only 5Kz



But we need minimal to detect noble metal buried between 55 Khz to 115 Khz

I think for your country is 78.9 but I m not sure only by Calculation
You can try Other frequency













This is my PDK

I have test the spark is only for few cm 22 to 25

And I have test near TV is few distance 1 to 1.5 m

I think your Device is so more better or you have low frequency

Here in my country I work with 58 to 66 Khz

http://www.youtube.com/watch?v=fkd3WGyUGLQ&feature=youtu.be

[Qiaozhi]

Hi Aulook
Woow my Dear friend nice work for your two PDK
Yes I see you have put capacitor 1nF and if we consider this Value

we have only 5Kz



But we need minimal to detect noble metal buried between 55 Khz to 115 Khz

He probably meant 820uH (not 820mH, which is a huge inductance).

[Nicolas]

He probably meant 820uH (not 820mH, which is a huge inductance).

Hi Qiaozhi thx to explain and comment here. Yes you are right 820 mH is big inductance

Then he work with 178 Khz if is 0.82mH

[Nicolas]

New picture of my PDK A13

[GOLDEN LILLY]

my pdk

Thanks Quashi for the correction. It's between 820 to 980 microhenry not milihenry.

[Nicolas]

Thanks Quashi for the correction. It's between 820 to 980 microhenry not milihenry.

Hi my friend

Try with capacitor 4n7 >>>> Frequency is near 81 Khz
and with 4nf+1n in serial = 5n7 >>>> Frequency is near 74Khz

Or make one selector of commutation between the two capacitor

and make me please little video for the spark.
and how distance near TV
and if your PDK detect fresh Metal Gold / Silver if yes how distance for that

this is interested to know good how work all PDK