Does anyone know anything about this old Pi detector circuit?

[GeoMax]

Hello forum members,

A long time ago, I got this old PI circuit diagram from somewhere. Unfortunately, the project documentation is incomplete. I have only this page. It looks like it's a PI detector from the 1980s/90s, photographed from an electronics magazine. Judging by the language, I think the text is in Hungarian. Does anyone recognize this project or project name and perhaps have the complete article? Or does anyone know when and in which electronics magazine the article was published?
The quality of the page is not the best.

Thanks

[algan]

Interesting scheme, how does it work, is it dynamic or static mode here?

[pechkata]

Yes - maybe a combination with this one.

[GeoMax]

Interesting scheme, how does it work, is it dynamic or static mode here?

Hi Algan
I'm trying to figure that out too. It's a slightly different approach than usually seen. That's why I need the help of the forum community to find the full article. Perhaps someone has a copy of the original article and could post it here.

[boilcoil]

Maybe this will help.



PI_metedet.rar

[GeoMax]

Maybe this will help.
[ATTACH]n447596[/ATTACH]

Perfect! This article contains almost the same circuit diagram. This will help to better understand the design.

Thanks.