Re: Weird ideas

From: 	Ted[SMTP:tedric-at-generation-dot-net]
Sent: 	Thursday, December 04, 1997 1:25 PM
To: 	Tesla List
Subject: 	RE: Weird ideas

John, Edward, all,

Finally someone get my point. When I refer to efficiency, I am referring to
the total energy input to all electrical & mechanical components in order to
get that output. For example, one can get a 1 hp motor to drive a RSG for a
500 watts coil. If the both the coil and spark gap are well built it should
perform better that a static gap and gives a longer discharge. Now you may
be delight to see such improvement, or at least until you find out the
equivalent watts for a hp. Well, an engineer may not agree with me, but I
find the above system is so inefficient that I would not even invest time to
think about it.(This moment is the only exception)

Also, I believe the power level of the big tube-type broadcast band
transmitters that you (Edward) mentioned will require some expensive cooling
system. How expensive? Maybe even more that the sum that the pole pig +
professional caps + whatever cost you.


>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