Re: Charging Choke

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

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

> > In almost every schematic I've seen using a charging
> > choke and diode, the choke is placed before the diode.
> >
> > This leaves the diode looking straight into a spark gap,
> > usually. One would intuitivly think placing the diode
> > behind the choke would protect the diode from transient
> > spark gap behavior, but this must  be untrue or everyone
> > from from Sandia to Livermore would do it that way.
> >
> > IS there a good reason to put the diode after the choke?
> >
> > LR

	Yes.  If the choke is connected directly to the energy-storage
capacitor the winding to ground capacitance will probably cause problems
and possibly induce failure, as the full RF voltage will be between the
choke and ground.  

Ed