RE: Weird ideas

From: 	John H. Couture[SMTP:couturejh-at-worldnet.att-dot-net]
Sent: 	Thursday, December 04, 1997 12:43 AM
To: 	Tesla List
Subject: 	Re: Weird ideas

At 05:36 AM 12/3/97 +0000, you wrote:
>From: 	Edward V. Phillips[SMTP:ed-at-alumni.caltech.edu]
>Sent: 	Monday, December 01, 1997 1:14 PM
>To: 	tesla-at-pupman-dot-com
>Subject: 	Re: Weird ideas
>""  BTW, why bother with tubes? Frankly, I found that they are so incredibly
>inefficient, think about this for a moment: First, you have to put enough
>energy to "boil" enough electrons. Then, you are applying electric field
>(energy) to constantly accelerate the electrons, not only did the electrons
>did not slow down as they approach the anode, they travel at full speed. At
>last, you stop the electrons and most of its energy become heat. Heat is
>generated in both the "boiling" and "stopping" process, it sounds to me like
>a electron welder."
>        Some of the big tube-type broadcast band transmitters ran
>at an OVERALL efficiency (power delivered to antenna divided by
>power from the AC mains) exceeding 90%.  It's no trick at all to
>design and build a Class C tube amplifier with 75% efficiency, and
>the filament/heater needn't use more than a few percent of the plate
>input power.

  Ed -

  What are the wallplug efficiencies including filament losses and connected
as Tesla coils. How would these systems compare with Tesla coils with the
same wallplug input ?

  John Couture