Re: Vacumm Pumps Source

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

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

Tesla list wrote:
> 
> Original poster: "tesla by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<tesla-at-paradise-dot-net.nz>
> 
> > Two questions:
> >
> > 1. Did you measure the ultimate pressure you reached?
> No, do not have facility but it is quite low. Many years ago at high school
> made small plasma tubes sucessfully.

	That I can imagine, if you weren't evacuating completely for later
refill with something beside air.

> > 2. Did you use a dessicator in the line to the capacitor tank?
>  (good idea and easy to implement)
> Nope,but H20 vapor should not be a problem I think, any small residual water
> vapour can be removed from system later with external low heat in
> application of air removal from caps etc. Suspect direction of gas flow does
> not encourage inflow of water vapor to system under evacuation.

	Not sure about either of these things (just plain don't know), but my
old association with builders of HV capacitors taught me that exposure
to any moisture at all should be avoided during manufacture.
I'm not sure that the "direction of flow" will apply to residual water
vapor.
 
> See other post from plasma globe experimenter too.
> Best
> Ted L in NZ

	Interesting topic and think it would be useful to know if use of a
simple aspirator is really good enough, as someone has reported.

Ed