Re: capacitor identification

To: tesla-at-pupman-dot-com
Subject: Re: capacitor identification
From: FutureT-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Sat, 22 May 1999 19:13:58 -0600
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

In a message dated 99-05-22 05:56:08 EDT, you write:

<< 
 >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
  >>

Kevin,

Sounds like a mica transmitting cap.  These are usually rated at 8kVAC
for the brown phenolic cased types, and 10 to 12kVAC for the ceramic
cased type of this size.  I use these for tube coils, and occasionally in
series or series/parallel combos for spark gap TC work. It's a good 
quality TC cap if it's a transmitting mica.  There are also smaller ones
that are also good for tube coil work, but rated at 5kV or less usually.

John Freau