Re: Door knob caps

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

Original poster: "Jonathan Peakall by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jpeakall-at-mcn-dot-org>

Doh! *smacks head* 

I told ya I wasn't one of them....The smart ones, I mean...

Jonathan Peakall

Tesla list wrote:
> 
> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<jimlux-at-earthlink-dot-net>
> 
> .005 uF is 5000 pF...
> 
> Tesla list wrote:
> >
> > Original poster: "Jason Petrou by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <jasonp-at-btinternet-dot-com>
> >
> > Hi Tracey,
> > > OK   forgive the ignorance as I know this is a newbie question for
> > > sure...I'm attempting the construction of my first coil and the
particular
> > > directions that I'm using call for 3 door knob caps wired in parallel for
> > a
> > > total capacitance of 1500 Pico farads.
> > 1500pF (or 0.015uF) is about right, possibly a bit too high but Im sure
that
> > an averaged sized coil would have no problems with that.
> >
> > >These are 15kv caps. In the
> > Perfect.
> >
> > > directions it says not to worry about the capacitance too much. My
> > question
> > > is this: How much can   I vary from that capacitance? I have found some
> > 50pf
> > > caps at 15kv. Can I use these caps? Do I need to add caps to get the
> > > capacitance up around 400 pf? Or can I run less capacitance say
around 200
> > > pf?
> > You really need more than about 500pF (0.005uF) to run any type of
coil. The
> > capacitance doesnt really matter (i.e. you can be 500pF out and nothing
will
> > happen) but you do need to get it close to the target capacitance. If you
> > email; the specs of the coil you hope to build to the list then we can tell
> > you exactly what capacitance we need.
> >
> > All the best,
> > Jason