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Re: capacitor identification




On Fri, 21 May 1999 22:39:37 -0600 Tesla List <tesla-at-pupman-dot-com> writes:
>Original Poster: "Kevin Wahila" <knw2-at-lehigh.edu> 
>
>about a year ago i picked up a capacitor at a ham fest and was 
>wondering
>what type of information, if any, i could get on it, specifically the
>voltage rating.  i measured it to .0021 microfarads.  that's about all 
>i
>know.on the top are the two screw terminals and the words SANGAMO, 
>then
>MICA CONDENSER.  it's 2 1/8 inch deep by 2 1/3 inches wide by 2 3/4 
>inches
>high.  that's about it.  my main questions are what might be a 
>possible
>voltage rating, what was it once used for and what might it be used 
>for now.
> 
>thanks all
>kevin wahila
>
>
That sounds like a mica transmitting capacitor. It probably has a voltage
rating of a few thousand volts AC. It could be used in tube coil service,
which is a use fairly close to what it might have been originally
intended for. (radio transmitter). Mica has outstanding rf
characteristics-- the only problem is that the plates are often
vapor-deposited, so use in a conventional disruptive-discharge coil would
erode them.
I know that's not much help--- but... so?

With silent lightning in my hands,
-The Electrophile-
Grayson Dietrich
visit my HV page!
www.geocities-dot-com/WestHollywood/Stonewall/2509/index.html

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