Delta Pulse

[Scorpion]

delta pulse

hi,

i have got same pcb file but whats the output connection, please look at my pictures with .rar file http://dedektor.org/delta.rar

[Geo]

hi,

i have got same pcb file but whats the output connection, please look at my pictures with .rar file http://dedektor.org/delta.rar

sorry but i cant open *.rar files

[gemini]

look at the pictures in my site without *.rar

hi again,

you can look the pictures, i drew all leck connection if you have idea tell me. infact you built delta, i m sure you know all things about it. files are some big eproxcimatelly 1+ mb, may be you will have to wait to see them.

http://dedektor.org/delta_1.bmp
http://dedektor.org/delta_2.bmp


thanks for your help

[Largesarge]

Well I reckon I'll throw in my two cents on this. The PCB picture gives me the impression that this is a two sided board. The differing shades of gray and the pads with gray on black circles make me think thru hole connections.


The schematic is another matter, it is confusing but I have figured out a couple of things. Tr2, 4, 5 on the left side correpspond to gate inputs to bilateral switches D9 & D10. I have not found where Tr's 0, 1, 3, 6, 7, 8 & 9 go. I also have no idea what the circuits in the lower left are for.

As for the pots for signal, noise & gain I have no problem with the end hanging open, just don't think of the left over as being in the circuit

Overall I think the use of all those bilateral switches is overkill, simply gating on an op-amp would do the same thing.

[gemini]

Last appearance Delta pulse

hi all,
i built the board but still lack something.

[gemini]

lack connection

lack connection, dont you know these ? how did you bulid it ?

[Largesarge]

i gave my best shot above, I have never built it. I would suggest you get in contact with the guy who designed it in the first place, whoever this MIKRON Electronics is.

Good luck.

[Geo]

On the printed circuit it is necessary to add a strap between the paw 2 and 6 of the IC8 Check up the spaces of the IC pins and clean the pcb. The detector must work. Sorry but this time i am very very busy.

[Gosho]

The firm Mikron is from Varna, Bulgaria
http://www.mikron.hit.bg/

[Geo]

if you have problem with delta pulse you can send me the pcb to check it but the next month .

[gemini]

hi all, Delta Pulse

i connected these legs according to delta_p_diagram below, Are they right ?

HP = headphone OK.

TUNE = button OK.

TRShold = all legs connected, P5, OK.

GAİN = Two legs connected P4 OK. , other leg is empty ?

SENSİVİTY = Two legs connected P2 OK, other connected TR5 OK ?

SİGNAL = Two legs connected P1_1, P1_2 OK, other connected TR4 OK ?

NOİSE = Two loegs connected P3 OK, other connected TR3 OK ?

Where is the meter connection ?

When i connected so that coil getting warm. Please explane me.

[Geo]

"Where is the meter connection ?"
At jp1 and jp2 (parallel with R37)

"When i connected so that coil getting warm. Please explane me."
check the polarity of Jfet. If you have a scope check the output pulse.
Don?t forgot to make a jump between pin 2 and 6 of ic8 (555).
Good luck

[gemini]

Delta pulse

hi geo,

yes i connected pins between 2-6 (555), Coil and jfet r warming still.Between Out put LM556 and jfet havent signal. There is no AC voltage at this point. If i dont use the coil, resistor (680R) burning. And constant ther is a sound and i can adjust the this sound using the pots at the left side. I check the board there is no mistake.
i still dont know there is lack connection or not.
do u use msn-icq ?

[gemini]

Delta last words

Dont try the built this Delta project. Absulatelly not working, has lack and wrong connections. thanks for your help

[jcm05]

Hello,

After having left me of the forum a few weeks I see that the DELTAPULSE always fascinates as much.

For my part and after having passed a lot of evening to try to improve my MD it detects a coca to 65cm maxi with a strong and constant signal.
26 to 28cm for a piece of 2 euro.

Attention the implantation published higher on the forum doesn't correspond to the last version and there is a mistake of inversion between VD12 and VD13.(last version: Rev250404).


Good luck
JCM