Re: Remote Tuned Primary (RTP) ideas...

Tesla List wrote:

> Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
> The second part is more interesting.  Having thought of many "great ideas"
> and having them all disintegrate for various reasons, I have settled on the
> following:  I will have an "extra" MMC with four stings.  They will have a
> value of 0.5, 1.0, 2.0, and 4.0nF (could be other values too).  This device
> will be parallel with the regular primary cap.  By selecting the strings in
> a binary fashion, I can select from 0nF to 7.5nF of additional capacitance
> in 0.5nF steps.  Four fiber optic cables and simple circuits, as above,
> will select the capacitance from a simple binary thumb wheel switch.  Piece
> of cake!  Except for the four actual switching devices.
> My "pals" at Jennings could sell me vacuum contactors at $2000 a piece but
> that is kind of rough even for me.  [snip]

Since you're rolling a lot of your own stuff anyway, why not just make your
own HV
relays?  Use a solenoid and a lever arm to just whack two ball bearing contacts
(or tungsten bars, or whatever) together to complete your HV circuit...add
loading or whatever other doodads you'd like, immerse the balls in oil and
good to go.