pcb-lorens-5

[eclipse]

Sasho connections appear to be consistent with mine which I have from drawing schematic from the original board photo.
For component values I can't speak. I did mark R73 with * when I draw this few months ago - I don't remember exactly why - probably wasn't sure for the value.

[scs]

I think the amplifier circuit is wrong. It should be something like that.

[usefi5961]

thank's perzo,but when downloading .layout eset warning and threat find error appear in monitor.

[perzo]

HI all please see layout file lorens 5

https://www.4shared.com/postDownload/zwYT2KGQca/l0renz-9.html

[usefi5961]

thank you very much mee60 for sharing schematic sorry can you share search coil detail for this metal detector? , very good and hard job and good luck.

[Alexismex]

Mee60, Hard job and good job give you a lot of satisfaction , Thank you to share for the forum,
Saludos from Mexico,
Alexis

[Geo]

Mee60, very good job

Thank you

[kt315]

fine job. thank you.

[eclipse]

mee60 that looks nice, good job!

[mee60]

hi all

this is a lorenz pulse 5 schematic
all know this project is very very hard for me
but im send for all
100% is ok i made it
tanks

[deltapulse]

hi mee60
i can't find ic i, can you help me ?

[mee60]

Hi all
my new pcb of lorenz lp5 and assembled power supply , object and battery charge LED , selector driver , sound driver , and Reference voltage

[mee60]

Hi all
this is my new Lorenz lp5 pcb

[mee60]

I think the chips markings are blank by the manifacturer too, so efen if you recognize them its not 100% accurate unless you have the device. Uncapsulate the chips and read the markings/structure of the die itself. You can easily recognize the 555 timer the dual op amp and the single op amps by their power supply connections. The big 16 pin chips im not too sure about. Must be some similar to cd4538, 74hc221 i guess.

It's alot of work to turn this into readable schematic, and even way more in working device so I get that, no one here is to blame beheaving badly.

I think the chips markings are blank by the manifacturer too, so efen if you recognize them its not 100% accurate unless you have the device. Uncapsulate the chips and read the markings/structure of the die itself. You can easily recognize the 555 timer the dual op amp and the single op amps by their power supply connections. The big 16 pin chips im not too sure about. Must be some similar to cd4538, 74hc221 i guess.

It's alot of work to turn this into readable schematic, and even way more in working device so I get that, no one here is to blame beheaving badly.

I am of course somewhat help you
Because hardly got Schematic
I built the circuit. And gave the correct answer
Sufficient funds are absolutely correct me
Coils who have not won more than its original sample
Please send me your email so I can send you my movie for its function

this ic is MC14538 not 74hc221
should be MC14538 original
با تشکر

[mee60]

R55 is 22K - yes, not 33K.

But R64 is 220K (marked on the original picture as R55/220K).

in original board R64 an R55 is 22K
which original board R55 is 220K?
i dont see it.