[HAM] Vibrato Line

[David Anderson]

Hugh is right and for the right reason.

I had never bothered to think of water in terms of it having a dielectric constant, but I ran across it in a textbook once. It has an extremely large dielectric constant, something like 80, whereas polypropylene is around 2.4.

So a little water will bump the capacitance reading up a lot.

David

-----Original Message-----
>From: Hugh <brooo at shaw.ca>
>Sent: Feb 26, 2008 1:31 PM
>To: The Hammond Forum <hammond at zeni.net>
>Subject: Re: [HAM] Vibrato Line
>
>No. It's true for modern caps that can't absorb any significant 
>moisture, but wax caps increase as their dielectric absorbs moisture.
>
>Hugh
>
>>The guy at the store says cpacitors never increase with age, they 
>>only decrease.  Is this true?