My Digital Pulse detector Delta Pulse 3

[volcano]

Hi Jap
I tried to adjust TR1 many times to do the calibration like this picture



but the signal is always horizontal (sometimes is like a wide range which includes points) like this picture



And I've been I doubt in the vicinity of 2n7000
I have the following measurements

[danny475bek]

hi all
thanks to those who are working on this nice project i know that there are some members who rely are working to full fill us with a new project
ok i really wont to know which version of pcb board i have to print and which one is good and works well because i see a lot of versions maybe 3 or 4 versions and if any one in this forum can send me the hex file my e-mail is [email protected]

[jap]

Hi volcano
-test & change Q3,4(READ DATASHEET OF U TYPE to now the pin GDS)(THE ERROR FROM Q4)
- put type
best time
j.

[DianaBlu]

Hi all! I have big problems about the registration on the turkish forum. I don't receive the "activation link" email. I've already tried with 2 different nicks with 2 different email, no joy.

Anyone else had this issue? Is a temporary thing or so? Any clue?

Thank you guys...

[eaglewings35]

I have not been able to get my detector to work, so I have taken it to an electronics shop
and am having them check each part to make sure all are working. I understand that sometimes
you get parts that are bad.
But, I was informed that I should have the PCB in a shielded container to keep it from picking up
outside signals. Does anyone have a thought on this? I was thinking that the coil needs to be shielded, not the box. Correct?!?!
I have a plastic box with a snap lid that would make it waterproof.

Thanks for all the input.
Kerry

[jap]

Hi eaglewings35
You can work shielded(insulation) as you want by sheet paper of copper in the form of a paper cut dimensions same dimensions of pcb and put down at the base of the Box and be completely pcb above and welded wire and arrive to -E battery.
best time
j.

[eaglewings35]

Thanks Jap for the help.
If I understand correctly, if I place a sheet of copper on the "Bottom" of the PCB and solder it to the
negative battery, this will make it "Shielded"? Is this correct?

Do I need to put copper paper any where else?


Thanks again. Your help is much appreciated.

Kerry

[eaglewings35]

Also, Is there a process to change out search coils, to make the detector recognize
it? How do you tune the DP3 to the coil?

Thank you again,
Kerry

[jap]

Hi eaglewings35
Yes, it's enough - Notable sheet is installed in Box by any way.
-yes a process see link:http://www.youtube.com/watch?v=YXCt8QqHeFo
best time
j.

[DianaBlu]

A simple question: It seem almost complicated in my country to found a LF357. Everybody proposed me a LF356. I had a look to the datasheet, and seem that it works with lower voltages, with similar performance. Can I change them without loss in performance or
without damage to the hardware?

[jap]

Hi DianaBlu
LF357=LF356.
best time
j.

[eaglewings35]

Hey J., I took my DP3 to the shop and they said it was just some loose connections, nothing bad.
Is there a process for changing out search coils?

If I change to a dual coil, how do I make it see and recognize the coil?

Thanks
Kerry

[DianaBlu]

Fantastic Jap, you're the one. Look for a pvt.

Thank you!

[jap]

Hey J., I took my DP3 to the shop and they said it was just some loose connections, nothing bad.
Is there a process for changing out search coils?

If I change to a dual coil, how do I make it see and recognize the coil?

Thanks
Kerry

Hi eaglewings35
What is the problem ?- and your observations of the problem - put photo so that I can help.
-for dual coil no use.
best time
j.

[jap]

Fantastic Jap, you're the one. Look for a pvt.

Thank you!

Hi DianaBlu
The reply Did not need all this!!!!

best time
j.