Delta Pulse

[raff33]

please

About one unstability I did meet of and fight with.

On winter Delta worked only good, but now not I waste much time on a decision, but seems have got an answer. There is some kinda pickup from operator body. You have to shield the PCB. I did put a copper foil under the PCB, clued it to bottom of box and grounded by wire to schematic's (-E). I also grounded falsepanels via resistors 100 Ohm, those are aluminium done. Now DP works great.

yours

Hi kt315
please can you put here photos of shield the pcb and grounded falsepanels via resistors 100 Ohm ?
many thanks advense

[g.s]

hi raff33 you can with help you at previous my question

[jap]

Hi g.s
Is va meter when measured by measurement set in 1 ohms the va meter the cursor moves.

-Does it work and there's a sound only?

best time
j.

[kt315]

Hi kt315
please can you put here photos of shield the pcb and grounded falsepanels via resistors 100 Ohm ?
many thanks advense

hi raf33,

I am glad you appreciated my note. because the shielding is REALLY IMPORTANT for the stabile work. I did due like it is done in Deepers 10DD. here is fixed schematic - R59 R60 has to be connected to +12V like to Deepers. look my photos in Deepers thread, you have to notice the wires between the points at PCB and falsepanels. there is a shield plate under the PCB - look at photo. it is grounded directly to +12V.

[UFO]

That schematic is full of errors.

[satdaveuk]

It seems pretty doomed this project, ever since the first version came out a few years ago, its been full of pitfalls errors, but saying that, them who dares wins maybe oneday.

The Minipulse 3 was full of half truths and failures but with determination and not giving up, I turned it around and made quite a nice machine, far as I know proberly the only engineer thats actually made a fully working version of it on Geotech.

All im doing now is perfecting a nice coil to marry up to it, then shall post a fully working project of it on here with all the errors missed out.

O and by the way this one does detect small gold rings etc even with a very basic 6" coil unlike this project.

[kt315]

the schematic now is ABSOLIUTELY and CLEARLY without mistakes.

do not abuse the people, PLEASE.

[raff33]

thanks

the schematic now is ABSOLIUTELY and CLEARLY without mistakes.

do not abuse the people, PLEASE.

Hi kt315;
many thanks for reply i will try to do this shielding ......
REGARDS

[apocalypto]

the schematic now is ABSOLIUTELY and CLEARLY without mistakes.

do not abuse the people, PLEASE.

Hi KT315
is this the last revised PCB ?

[kt315]

PEOPLE, CAN YOU WAIT A LITTLE? I do all as far as in me lies you all will get NORMAL WORKING AND TESTED PCB.

[jap]

Hi kt315
I have two choices 1 , 2 to get a -E.
I hope their research.
best time
j.

[VUJO]

Hi kt315
I have two choices 1 , 2 to get a -E.
I hope their research.
best time
j.

whether the two diodes facing correctly?

[jap]

mistake for VD8,9.

Correct the mistake for VD8,9.
Can be an alternative to the two by zd.
best time
j.

[kt315]

whether the two diodes facing correctly?

fixed.

[jap]

Hi kt315
This is clear - thanks
best time
j.