Re: Wireless power transmission (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 26 Jun 2007 06:26:48 -0500
From: Scott Stephens <radon86@xxxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Wireless power transmission (fwd)

Tesla list wrote:
> From: David Thomson <dwt@xxxxxxxxxxxx>
>   
Sorry for not butting-in sooner; 'been busy...
> When the ion
> density is maximized for the strength of the E field, the Tesla coil no
> longer emits ions (potential in E field equals potential in coil).  If,
> however, you build a receiver that taps the potential of the E field, a
> stream of ions will be emitted by the Tesla coil to fill the "tunnel" of
> lower potential.  Thus, power can be transmitted in a more or less straight
> line right through the air, just as Tesla claimed.
>   
Few weeks back I noticed in some trade mag an old ~1960 patent for an
ion-speaker. They don't seem to have proliferated so I suspect the
efficiency is poor. Searching on electrostatic speakers makes it
questionable whether thermal or electronic forces predominate
transducing sound.

When Tesla coils generate ions, "field emission" results in significant
(if not predominant) energy loss according to the emitters "work
function". Then there's "attachment" of ions to electro-negative oxygen,
ozone generation, UV generation. I suspect no useful energy could be
transmitted thus.

But I've been interested in the feasibility of a VanDeGraaf-like
generator based on spraying ions into a stream of circulating fluid.
Perhaps letting the ions "attach" to oxygen at the emitter-base, then
using a short-UV lamp to knock the electrons off at the top
collector-terminal.

Anyone have any idea how practical such a notion is? Every so often I
hunt around for usable equations but find none. I'd like to be able to
evaluate the relative merits of charge-carrier gases like Air, H2, Cl2
at various pressures.

Blowing pressurized air through a couple tubes with a fan would be more
simple and robust, but perhaps less effective, than a belt on pulley.

Scott