Re: Can anybody ID these caps?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-uswest-dot-net>" <jimlux-at-earthlink-dot-net>

On the other hand, N4700 could be the temperature coefficient, and 701 could
be the capacitance, 700 somethings (pF?).  What is the physical size... My
4700 pF doorknobs are cylinders about 2" in diameter and 2" long, with a
10-32 female screw thread in the middle of the flat sides.  Ceramite doesn't
currently make a 40 kV, 4700 pF unit, but that's not to say that they didn't
some time in the past.
http://www.ceramite-dot-com/

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, April 22, 2001 8:15 PM
Subject: Re: Can anybody ID these caps?


> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<jimlux-at-earthlink-dot-net>
>
> > >
> > > Original poster: "jpeakall by way of Terry Fritz
<twftesla-at-uswest-dot-net>"
> <
> > > jpeakall-at-mcn-dot-org>
> > >
> > > I have some ceramic looking doorknob caps, marked:
> > >
> > > N4700
> > > 701M
> > > M (The M is in  a circle) 40kv
> > > 507A
> > > they test out to .007pf
> > >
> > > I have been using these on a small coil with an OBIT, and they have
> never
> > > gotten warm. I just got a 15kv 60ma NST (for 20$ with 20' of 15kv
wire,
> > > sweet!), and am wondering if these caps can handle the NST.
> > >
> Those were made by Ceramite (that's actually a capital C around the M),
.007
> pF?  You probably mean .007 uF, and that's a bit high, since they are 4700
> pF units.  (4.7 nF, .0047 uF).  Depending on how you measured them, it's
not
> unusual to have them read "high"
>
>
>