RE: lifter power supply - using Tesla coil (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 30 Jul 2003 17:22:48 -0700
From: Richard Wayne Wall <rwall@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Cc: RWW <rwall@xxxxxxxxxxxxx>
Subject: RE: lifter power supply - using Tesla coil (fwd)



Charles,

> A question about the post above:  I read on some site that while
> pulsed unfiltered DC works well for powering lifters, well filtered
> DC does not.  Is this true?

Yes, several have reported this.


> I am curious since I would like to try
> building a simple lifter, and I just happen to have a nice 50kV well
> filtered DC supply.

Give it a shot!

> On a related topic, I saw one site where the HV wire that is normally
> suspended above the skirt was enclosed in a cylinder under vacuum.
> There was no ion wind, yet the device still developed thrust.  Is
> this for real?

Yes, JLN reported it on his web site and he also has videos of this
experiment
on his web site.  He also put the skirt in a box below the cylinders to
block
any ion wind.  The skirt lifted very well.  As far as I can tell the main
lifter force is not from ion wind and not due to antigravity.

RWW