Delta Pulse

[kt315]

my DP working with microcoil (tape's eraser head) and there is maybe 0.05...0.07mm diameter wire inside.

https://www.youtube.com/watch?v=YxfeuI1hQM0

[Toros]

what is the number of turns , can this detail cause a reheating of IRF ?
Thank you !

Pulse induction detectors work with different coils. Usually, the inductance of the coil is given as the starting point. Delta pulse typically work with coils that have an inductance of about 400 µH (micro Henry). It is not necessarily exactly 400 µH, but this approximate value is sought regardless of the diameter of the antenna (50x50cm or 100x100cm). The thickness of the conductor from which the coil is made only counts for the power of the pulse emitted into the ground. After you make the coil and connect it to the detector, you have to understand the exact value of the extinguishing resistor connected in parallel to the coil. It is given as 2k2, but in reality for each coil it has a different value. This is important for the proper operation of the detector and the depth of which metal objects will be detected.


µH

[abdennour]

what is the number of turns , can this detail cause a reheating of IRF ?
Thank you !

[Toros]

in the manual it is written for best performance coil between 3 -7 oHm, I built one with 5.6 oHm 58 turns of 0.30 mm 38 diameter .

0.30 mm is too small wire size. It should be about 0.6-0.7 mm

[kt315]

If you post a clear photo of the PCB we could match it up with known versions and tell you what those IC's are.

HF how to do clear photo of the PCB
again guys I URGENTLY AND URGENTLY ask you do the images more legible.

please do these step by step!

1. wait clear sunday time. do not hurry. the sun must be VERY OPEN!
2. GO OUT from your home, at your homeyard, at the open sunlight.
3. place PCB so the sun light will be from left upper PCB corner.
4. the shadows must be short, but they must be! slightly cloudy daylight
will give pics without shadows.
5. do a photoshooting - find and set MACRO mode in your camera. set ZOOM if you need. ZOOM must choiced analog, not digital.
6. you have NOT EVEN A TINY CHANCE here to get the answer if you are doing your Home Work poorly and woorse.
7. set your camera on high resolution. your pics has to be from 5MB and more. for the forum 1200-1600 pixel has be good.
8. send your pics to [email protected] with subject in subject field:
new hires pics of board [detector model name] for your collection.
9. Forget your egoistic intentions only take on and give nothing in return.
do not cultivate your EGO.
10. do not waste your time making pics in your room. you will get only a trash absolutely unusable. yes, you and me are not professional cameraman and have not the needed light pro equipment on your working table, so keeping some rules i offer and you will get perfect pics and btw will learn how to make perfect photos of your family, lovingyou, children and the Nature itself. BELIEVE ME thats is EASILY.
11. if you think your pics done in a room are good enough for the forum - its only your deeply delusion.





GOOD LUCK IN THIS YOUR NEW HOBBY.

[abdennour]

in the manual it is written for best performance coil between 3 -7 oHm, I built one with 5.6 oHm 58 turns of 0.30 mm 38 diameter .

[homefire]

If you post a clear photo of the PCB we could match it up with known versions and tell you what those IC's are.

[dbanner]

what search coil do you have connected?

[abdennour]

you have a strange way to welcome new or guest of this forum, you have a strange way to welcome new or guest of this forum, i think i'll try to repair it alone , by changing all the components . thank you !

[kt315]

you will get help and being run out momentarely. like thousands guys had did that before you.
while WE NEED info FROM YOU AT FIRST!
WE ARE THE FORUM HERE! do not grow up your EGO here!
yes, scratched and what? btw i have pics but i need both side and in very high resolution.
after you another people will go and will ask same questions. i am not the God Eric Foster to see all your problems
through the walls!
there are millions cameras right now for low price! only buy and repair. https://www.ebay.com/sch/i.html?_odk...amera&_sacat=0

[abdennour]

what is the importance of image quality I explained to you I need help, if it is to know the name of the IC, I do not know myself, the seller scratched and erased the names !!!

[kt315]

thats mean i must buy you the camera???
i can do the pics you uploaded 100th pcs.

[abdennour]

That's all I have as a photo phone, I do not have a studio !!!

[kt315]

[kt315]

why you are not able to do good pics?
why you so hate us all here doing trash pics?
why your head is turned off doing pics?
why other people are able to do nice pics while you can not?

http://www.geotech1.com/forums/showthread.php?23641-how-to-do-nice-pics-and-where-share-out