Delta Pulse

[diminute]

No

My osc is ok, "...when I turn on my second channel..." is only a way to say that I look with my osc the coincidence of two signal with the noise. May be there is some short that load the output of my LF357.


Thanks,

diminute

[Geo]

Try to find and to connect an LF357 or LF356
Regards

[diminute]

I will...

I am waiting for these IC from Canada... in Cuba we don't have shopping with electronic components.

May be in two weeks I will have some LF 357.

Thanks,

[Geo]

OK
But if you will have problem with LF357 order, then tell me to send you it
regards

[diminute]

Thanks GEO

I see that this forum is a big family.

Regards,

diminute

[DIRCEU]

help with DP

Hi! all

I finished my DP (elbombaci PCB) and...not work very good. It can detect a coin (25mm bimetal) at 2 cm only.
Gold...nothing.
I experimented a variety of coills, change frequencies and...same thing!!
Have someone for help me please?

Thanks

DIRCEU

[erolunall]

Hello

pls look page 16 .Check Pcb error picture on page .
Check your diodes.if lf357 getting hot change it.
Regards
Erol

[DIRCEU]

Dear Friends

I find a small error on delta pulse part replacement diagram that I send
please careuful about this and correct. there must not connection beetwen 1n4148 and 27 k I attached picture.

Somebody make error when copying from original.
you can see original files at http://www.savefile.com/files/1018088

and http://www.teknolojiekibi.com/yeni/index.php?topic=4.0


Best Wishes
Erol

EROL!

In my PCB this error do not exist

Thanks
DIRCEU

[amtech2005]

Delta Pulse

Dirceu , Time to get out the Oscilliscope !! Check Q1 if its getting hot. Check your supply voltage and also your potentiometer connections and solder joints. With oscilloscope check where signal is missing or not enough gain . Your at the best part of the project , Getting it working !!! Do not give up , the Delta Pulse is a Good Machine ...Have a Great Day !! Eugene

[DIRCEU]

Dirceu , Time to get out the Oscilliscope !! Check Q1 if its getting hot. Check your supply voltage and also your potentiometer connections and solder joints. With oscilloscope check where signal is missing or not enough gain . Your at the best part of the project , Getting it working !!! Do not give up , the Delta Pulse is a Good Machine ...Have a Great Day !! Eugene

Hi EUGENE!

I will try this procedure now.
Thanks

DIRCEU

[Miha]

Hi DIRCEU
anything new with your DP? I have same problem, detection is poor.

[amtech2005]

Delta Pulse

DIRCEU , DONT FORGET ALL THE DIODES , MAKE SURE THEY ARE NOT BACKWARDS , LIKE I DID MANY TIMES .... Eugene

[DIRCEU]

Hi DIRCEU
anything new with your DP? I have same problem, detection is poor.

Hi! MIHA

No...still no. Sorry.
For now I don't have many time because I am reforming my house but I'll póst here when to solve this problem.

Regards

DIRCEU

[DIRCEU]

DIRCEU , DONT FORGET ALL THE DIODES , MAKE SURE THEY ARE NOT BACKWARDS , LIKE I DID MANY TIMES .... Eugene

Hi! EUGENE

Don"t worry EUGENE. I do not give up this project....only gave a pause...have much work in my house (men working; disorder and my wife is very nervous
I'll be back.
Thanks for your interest.

DIRCEU

[ismail surek]

hi to all

hi my all friends
these are my delta pulse






delta is very good machine