Delta Pulse

[Jose]

Hi all

I used 1mm wire for 1*1 coil 18 turns ,but it is has poor sensitivity

please guide me.

I used it.

Thanks.
Iman Boroumand.

Hello Belief
Try reducing R5, 680 ohm (page 33, post 823) to 400 ohms or less
Sincerely Jose

[Belief]

Hi all

I used 1mm wire for 1*1 coil 18 turns ,but it is has poor sensitivity

please guide me.

I used it.

Thanks.
Iman Boroumand.

[Jose]

Hello everyone

Thanks Ivconic and kt315 by answer questions.

Sincerely

[mariajones]

Hello friends.
I read your comment and understand to your metal detector. I think your metal detector little bit too short. You detect a coke can be increasing. you will more research to this equipment and you may be improvement it...

[rajesh]

pcb size

Hello


I attached 1.zip printable Pcb for delta pulse .

Best Wishes
Erol Ünal

hi erolunall thank's actually i need size of pcb in milli meter i mean how many squer mm lenth and hight...rajesh

[kt315]

Hi Jeos

when i increasing power knob, IRF840 is overheated.
would you recommend me why?

Thanks.

because at maximum Pulse Width position of the knob the MOS-FET is working near critical heat mode. the chopper has some resistanse in open state... it is NOT IDEAL device... or you need to choose another one, more modern, more best from modern ones... not IRF840 that is yet OLDIE nowadays.

[kt315]

Hi Jose ,
I double checked schmatic of delta pulse and also checked component list
but can not see parts with nummer R51 and C32

last C is C31 and it is also 4700uF ....


and original delta uses LF357 not lf 356 regards.

I think there is problem with my eyes.
and do you mean NOISE pot as POWER pot??
kind regards,

I see your problem you are waiting anybody must constantly update component list. then why you yourself is not able to do these simple things ALL ALONE?... some recent updates of the oldie schematic were coloured by green. if you may offer another way to contrast the updates... offer pls. an abstruction is not a way....

[DEMAC]

TRY THIS

DP-90X180MM

[erolunall]

Hello


I attached 1.zip printable Pcb for delta pulse .

Best Wishes
Erol Ünal

[rajesh]

delta pluse

hi erolunall i looked over all post of delta pluse. i did not found dimesion of p.c.b. which lenth / width will be give me good result an single sided .....

[Belief]

Hi Jeos

when i increasing power knob, IRF840 is overheated.
would you recommend me why?

Thanks.

[Belief]

I would like to see this 60x60cm gold plate.

Tinkerer

Hi,
this table is belong to lorenz .

[Tinkerer]

Detection depths.

[ATTACH]9739[/ATTACH]

I would like to see this 60x60cm gold plate.

Tinkerer

[ivconic]

Hi Jose ,
I double checked schmatic of delta pulse and also checked component list
but can not see parts with nummer R51 and C32

last C is C31 and it is also 4700uF ....


and original delta uses LF357 not lf 356 regards.

I think there is problem with my eyes.
and do you mean NOISE pot as POWER pot??
kind regards,

Okan, reffering LF356; it can replace LF357 just right. I tried it once in the past and everything was almost exactly the same. I couldn't see differences.
So put anyone you like there; 357 or 356.
And yes; Noise is Power...

Regards!

[okantex]

Hi Jose ,
I double checked schmatic of delta pulse and also checked component list
but can not see parts with nummer R51 and C32

last C is C31 and it is also 4700uF ....


and original delta uses LF357 not lf 356 regards.

I think there is problem with my eyes.
and do you mean NOISE pot as POWER pot??
kind regards,