Simple Meter Protection Using Diodes
I saw this one page article in the March 1966 issue of Electronics Illustrated:
source: https://www.worldradiohistory.com/Archive-Electronics-Illustrated/Electronics-Illustrated-1966-03.pdf
Here's a more scholarly exploration of the diode as meter protector in the November 1966 issue of Electronics World:
https://w4npn.org/wp-content/uploads/2025/03/Diode-Meter-Protectors.pdf
Now with mechanical meters becoming either expensive or unobtanium, this simple mod is something I will have to try on my various meters.
If only there was as simple way to prevent this:
source: https://www.worldradiohistory.com/Archive-Electronics-Illustrated/Electronics-Illustrated-1966-03.pdf
Here's a more scholarly exploration of the diode as meter protector in the November 1966 issue of Electronics World:
https://w4npn.org/wp-content/uploads/2025/03/Diode-Meter-Protectors.pdf
Now with mechanical meters becoming either expensive or unobtanium, this simple mod is something I will have to try on my various meters.
If only there was as simple way to prevent this:
I know: just be careful, Chuck !!
Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm
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