Delta Pulse

[TufaN]

Congratulations on your KT315. The dp layout works really well. very stable and very good underground depth. 1st video coke coke box 90x90 cm bobbin test 180 cm. 2nd video 1 euro 13 cm coil 40 cm

[TufaN]

[mk22000]

Hi guys i just finished my delta pulse but i have a problem.when i open it is ok i hear sound from speaker i change the sens and other pontesioneters and tune it until is quiet.my problem is that when i put on the coil it doesnt work and no more sounds from speaker.even if i have sound and didnt tune it and try to connect the coil it stops the sound and when I disconnect it and only then the sound come back.what do you think can be fault?any idea?thanks guys...

[kt315]

hi
i see general ununderstanding of you about shielding necessity. you must sure know and have a representation -
YOU, YOUR BODY IS SWIMMING IN ELECTROSTATIC FIELD. this field is HUGE.
ESFI is big problem for stabile metal detector work but there are standart decisions against ESFI.
for first time you have to look the pics, ALL PICS, learn all methodics that uses companies. learn why graphite inside the housing,
where inflicts, where connected.

https://www.geotech1.com/forums/album.php?albumid=102

[mk22000]

Hi kt and thanks for your reply.so you think my problem is the shield?i describe the problem and thought that a component may not s faulty..i check the resistors which are ok and ask if i have to test something else cause my machine working but stop when i connect the coil..

[kt315]

your problem is not shield. if your MOSFET is burnt then if you connect a coil you get 'short circuit' between power lines.
your power supply goes out and :::: no sound.

at first stage i recommended do NOT solder MOSFET in board (Point 7 of the instruction). to check T3 signal on 'is' and then only solder transitor.

[mk22000]

Kt as i try to find out what?s happening the detector working now with coil connected by now the problem is i try to detect a metal object with no luck.it doesnt do anything,so what to check now buddy?i open it and sounds like before as it should i lower the pontesiometers until it stays quiet but when i pass objects didn?t detect them..☹️

[kt315]

you must see a TX signal on output of preamp. you must get an oscilloscope to reseach signals.
you must set pots in position according the Instruction and DO NOT TOUCH THEM ANYMORE -!

[kt315]

RX***, not TX

[kt315]

Congratulations on your KT315. The dp layout works really well. very stable and very good underground depth. 1st video coke coke box 90x90 cm bobbin test 180 cm. 2nd video 1 euro 13 cm coil 40 cm

good. congruts. but pls do your video horizontal. thats simple amigo! just TURN your iphone on 90 grades!
JUST TURN YOUR CAMERA ON 90 GRAD -!

[nncu2020]

Hello everyone,

How can I attach photos to my post?

Thanks.

[kt315]

i click GO ADVANCED and choice paperclip sign above in message. do that.

[nncu2020]

I don't see the paper clip

[nncu2020]

i click GO ADVANCED and choice paperclip sign above in message. do that.

Can you please add and screenshot to see where is the paperclip?

Thanks

[nncu2020]

I think I can't attach images :-(

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