PI from a German magazine .... from 1985

[ducran_lapoigne]

only for your information

[GeoMax]

Interesting... this is very close to the old Sandbanks PI from 1979 which was later a bit modified around the power supply and called "PI Polones". What was the magazin name (1985/issue)?
Thanks for sharing....

[Carl-NC]

Has a UJT relaxation oscillator. Fascinating device that no one uses any more.

[boilcoil]

In the past It was very popular to create easy power thyristor phase controllers.

[ducran_lapoigne]

magazine ELRAD 1985

I have a copy in PDF but too big to send

[ducran_lapoigne]

here:
https://www.proximuscloud.be/web/app...ite/Y2ngKR27AC

[MDfanatic]

ducran_lapoigne thank you for the effort mate.

Do you have any other interesting schematics to share?
It's nice to have something new to experiment and learn.

[ivconic]

...

[GeoMax]

ducran_lapoigne

thanks for sharing this magazine project. I know ELRAD magazine for a long time but must have missed that article that time.

[MDfanatic]

...

Now that is huge, thank you very much man!

[ivconic]

[ivconic]

ELRAD 1977-11.pdf - Metall-Suchgerat
ELRAD 1980-11.pdf - Metallsuchgerat
ELRAD 1985-09.pdf - Impuls - Metalldetektor

I have found only these...

[GeoMax]

Hi all,

at the link below you can download the three extracted ELRAD detector project pages together with the cover page for easy reference.
https://www.dropbox.com/scl/fo/ibbst...sbmcx36f1&dl=0

[nejdet]

...

Pasword?

[ivconic]

pass_is_geotech