Hi to All, I'm new member and this is my first post, I built Delta Pulse 2S with coils 19 cm, enameled copper wire of 0.4 mm (I just have one role of it) with 31 tourna. So, my questions are: 1. How can I make my DPA 2 metal detector sensitive to IRON with small pieces? 2. What is the best frequency to detect small targets with iron? 3. What parts of the PCB must be changed to be able for detecting even small iron pieces? 4- any advice for coil? and what is the best dimensions of coil? I'm looking for you answers and advices, Thanks
Linkback: Delta Pulse 2S How to be sensitive to IRON small pieces ????

WHY no one wanna replying

Hi,

Firstly welcome to TeknolojiEkibi. For your first question, you have to make up working frequency of your circuit. For second, you can make 1-2khz for small pieces but design of this circuit is not suit for working li,ke this high frequency. For thirt, This menas a mew design

Thanks Mr. Karadag,

You can watch video of 1s

Thanks for advice Mr. Karadag,
I want to explain more about what I want to do, I'm trying to make my DP 2S sensitive to iron pieces like 4 inch (10.16 cm) iron nail not more, with good depth. I'm NOT looking for so small iron pieces like 3 mm piece.


Regards,

hmmm.

You don't need to change anything in circuit. If you can make a good working circuit, it can sense big irons from more depth.

Mr. Karadag,
I will try to make my detector like this in the video, that is what I want. But, HOW?. Is this delta pulse 2S modified ? or uses the same parts on PCB ?[size=78%][/size]

I'm really built a working PCB but making modification on parts. So, I understand from your reply that I must use the same part that listed in the PDF file ?
and what frequency I choose by adjusting the PR1 ?

Dear Mr.Mohkueng

Delta pulse  and  delta  pulse S2 is  different  detectors.Yours is delta pulse .
2s is at    http://www.teknolojiekibi.com/yeni/index.php/topic,6181.0.html
this is a digital version.

this are analog  like  your  detector.
http://www.teknolojiekibi.com/yeni/index.php/topic,4.0.html
http://www.teknolojiekibi.com/yeni/index.php/topic,2527.0.html

Thanks Mr. Erolunall,
So, my detector is delta pulse 2 or delta pulse 1 ?

Hello 

http://www.teknolojiekibi.com/yeni/index.php/topic,2527.0.html 

if  same  on  topic  it  is  like  delta  pulse 2. it  has one more tunning pot for manuel tunning.
You  can translate  to  adjustment   your  device   at  first  post on  link

http://www.teknolojiekibi.com/yeni/index.php/topic,2.0.html

Friends, Can you tell me about the coil ? I wanna use coil with diameter like 42 cm or 40 cm or less. what is best diameter ? and number of turns ? and which wire I use ?

WOW, Thank you very much Mr. Erolunall, for this information.

I have this PDF file, it's in English and it's same to how adjustment in the link. but, no information about PR1?

Hello
http://www.teknolojiekibi.com/yeni/index.php/topic,4385.0.html

Hello

try  0.5 mm wire   45 cm 27  tour 

I  was  using  at  middle  position for tunning pot  pr1 İt  is  changing  frekans on  coil.

http://www.teknolojiekibi.com/yeni/index.php/board,52.0.html

you  can  find  many  info  over  coils on  above  link

I  think  it  has to  be   about  500uh  coil  inductance .Delta  pulse 2  is  more  sensitive  on  İron   nothing  needed  to  change.

you  can  try  1  meter  coil  too.

Thank you Mr. Erolunall,
Today, I will start working on my detector, again I thank you for your important advice.
Best regards,