Re: >Subject: Re: First post: Fluoresce

To: tesla-at-pupman-dot-com
Subject: Re: >Subject: Re: First post: Fluoresce
From: "John H. Couture" <couturejh-at-worldnet.att-dot-net>
Date: Fri, 18 Oct 1996 08:20:48 +0000
At 05:08 AM 10/18/96 +0000, you wrote:
>On 10/16/96 23:05:59 you wrote:
>>
>>>From richard.quick-at-slug-dot-orgWed Oct 16 22:41:43 1996
>>Date: Wed, 16 Oct 1996 22:50:00 GMT
>>From: Richard Quick <richard.quick-at-slug-dot-org>
>>To: tesla-at-poodle.pupman-dot-com
>>Subject: Re: First post: Fluoresce
>>
>>Quoting  pgantt-at-ix-dot-netcom-dot-com:
>>
>> > I constructed a simple prototype coil using 28 guage wire,     
>> > approximately 1-1/4 inches in diameter and about 1/2 inches in 
>> > height.  The turns ratio was about 10 to 1.  At resonance,     
>> > this yields a voltage transformation ratio of about 100 to 1.  
>> > The resonant frequency was about 6MHz.  When the primary was   
>> > excited with an RF generator and the secondary connected to a  
>> > 40 watt fluorescent tube with a single wire (return path       
>> > through the air), the lamp could be fully illuminated with     
>> > less than 6 watts.
>>
>>Efficiency climbs when you use a two wire system based on the
>>same basic pricipal. Instead of using a single terminal (one open
>>end) Tesla coil for the resonator, go with a bipolar coil (two
>>open ends) and center mounted primary. The single wire system
>>makes a wonderful demonstration, but the two wire system just
>>plain works better.
>>
>>Richard Quick
>
>
>Thanks for the input.  I can believe there would be better coupling in the 
>configuration you described, but what I envisioned was imbedding the 
>transformer into the base of a fluorescent lamp.  Thus, the single wire 
>configuration seemed most appropriate.
>
>Phil Gantt
>

Keep in mind that light is radiant energy and must be less than the energy
at the input of the Tesla coil or you will have over unity energy. The
efficacy of the light is dependent on color, frequency, and bandwidth. The
efficacy of white light (wide bandwidth) is about 187 lumens per watt. The
lumen is light power. One footcandle is one lumen per square foot. A 40 watt
fluorescent lamp is about 100 lumens per watt.
Light output energy = Tesla input energy minus losses.

Jack C.