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Forums | Crystal Radio Think Tank ** Advanced Forum | Cleaning high-Q silver plated variable capacitor Post Reply Send Topic To a Friend
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neazoiPosted - 27 November 2012 14:23  Show Profile  Email Poster  Edit Message  
Does anyone have any good information about how to clean up these high-Q variable silver-plated ceramic capacitors?
Their plates are not so rusty (silver rarely turns to black) but I would like to clean them even more.
gzimmerPosted - 27 November 2012 21:39  Show Profile  Email Poster  Edit Message
Lots of articles on google showing how to clean silver plating using baking soda and aluminum foil ...

But I would buy a bottle of one of the propriety silver cleaning solutions...

........... Zim

neazoiPosted - 28 November 2012 2:46  Show Profile  Email Poster  Edit Message  
I have one of these silver cleaning liquids. They do a good job. But after a month or so, the solver plating becomes worst than it was before, much worst. They don't seem to do a good job for once-and-forever cleaning.


Garry NicholsPosted - 28 November 2012 6:31  Show Profile  Email Poster  Edit Message
Does the blackish silver oxide have to be cleaned off? I thought that it was not a problem.


gzimmerPosted - 28 November 2012 8:33  Show Profile  Email Poster  Edit Message

Congratulations on your fascinating SV3ORA web site.

It is the most interesting site have seen in a long time.

Your home-made LEDs are wonderful.

Thanks ..... Zim ........ VK3GJZ

Edited by - gzimmer on 11/28/2012 8:36:00 AM

gzimmerPosted - 28 November 2012 8:42  Show Profile  Email Poster  Edit Message

Yes, I had thought that the Silver tarnish (Silver Sulphide?) was a good insulator and dielectric in the same way that Aluminum Oxide was.

Could be wrong though.

........ Zim

neazoiPosted - 28 November 2012 16:46  Show Profile  Email Poster  Edit Message  
I think that the silver that becomes yellow is superconducting. But when it becomes black this is heavy oxidation.

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