Survivalism & Self Sufficiency Topics > Amateur Radio How-To's

Protect your gear from over-voltage with EASY CIRCUIT

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Carl:
Protect from overvoltage from power supply problems to lightening transients...
Many,especially switching / transformerless power supplies ,when they fail...or are effected by nearby RF, will output dangerously high voltages to your expensive HAM and other gear.
Here is a simple way to protect your gear from these HORRORS..and it is CHEAP AND EASY.

https://drive.google.com/file/d/0B5ZIZLZV4AwIVDdKWTBnazhRRGc/view?usp=sharing

Note that though 'glass ' fuses are illustrated,I use the more modern BLADE FUSES in holders.

Special K:
:popcorn:

Smurf Hunter:
For the lazy folks, I created a "project" on the mouser website that has all the parts.

I added all the components to the letter from the PDF (including the old school glass fuses and holders).
I also added extra diodes, as they are cheap and not something you can easily improvise.

1) open http://www.mouser.com/Tools/Tools.aspx
2) "Enter Access Id:"  236d0f4432
3) tweak shopping cart contents as desired
3) buy

Smurf Hunter:
Carl,

I was thinking it might be a neat idea to combine this project with a volt/amp meter.  It would only require a larger enclosure.  And those LED displays cost almost nothing.

It would seem a redeeming feature of the glass fuses is the neat little holder seems to take up less space inside an enclosure.

Carl:

--- Quote from: Smurf Hunter on December 10, 2014, 09:55:17 AM ---Carl,

I was thinking it might be a neat idea to combine this project with a volt/amp meter.  It would only require a larger enclosure.  And those LED displays cost almost nothing.

It would seem a redeeming feature of the glass fuses is the neat little holder seems to take up less space inside an enclosure.

--- End quote ---

The new DIGITAL meter would indeed be a great addition, But I would suggest external BLADE fuses in inline holders as easy access...though they are only supposed to blow when HELL freezes over and your power source goes wacky...just my habit...your 'all in one' would make for a neat ,multi-use (maybe add multiple output terminals?) all in a box savior.

Your gear deserves this cheap protection.

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