Re: [TCML] 5" Sparks - Approx 35 watts input power: Tesla was correct!

[FutureT@xxxxxxx]

Peter, Jeff,
 
I agree with what Peter says below.  Also I don't understand why  anyone
would consider it difficult to produce a 6" spark using 35 watts even  for a 
normal
type of tesla coil (non-kicker type).  Using my formula:
 
  spark length inches = 1.7* sqrt input watts (wallplug)
 
gives a result of 10" for 35 watts.  However small coils seem to give  shorter
sparks than the formula suggests, so perhaps the spark would be about 
6" or 7" long.
 
Cheers,
John
 
 
In a message dated 3/12/2008 7:02:03 A.M. US Eastern Standard Time,  
pterren@xxxxxxxxxxxx writes:

>About 40 years ago I was driving twin antiparallel ignition coils  from a 
12V 
>1A through a multivibrator to get perhaps 1 inch sparks. Ie  12 watts per 
>inch. You are getting 7 watts per inch. No problem with  that.  The break 
>rate will determine the power but not the spark  length. Drop your break 
rate 
>down to 1Hz and your spark length stays  the same but power drops to perhaps 
>only a few watts.

>I  think people were thinking that you were talking about a "Tesla coil" ie  
>air cored resonant HV transformer. With a TC, "Break rates" and hence  power 
>are likely to be perhaps 10 times higher higher than a  multivibrator 
>(guessing here), hence power drawn will be 10 times  greater. Spark length 
>tends to be more as a consequence of spark  growth than voltage (hence you 
>see streamers with a TC but not your  type of kicker setup).
>I suspect "a few people considered this an  unrealistic request" were 
>comparing apples and oranges.
>Nice  setup  BTW.
>http://tesladownunder.com/Tesla_spectroscopy1.JPG

>Peter



-----  Original Message ----- 
>>From: "Jeff Behary"  <electrotherapy@xxxxxxxxxxx>

>>Hey All,
>>A while  back I posted a request to try and replicate Tesla's table top  
>>oscillator that he claimedgave 6" sparks with less than 35 watts  of input 
>>power.  I think a few people considered this  anunrealistic request.

>>Jeff Behary
>>The Turn Of The  Century Electrotherapy  Museum
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