Re: The 1500t secondary myth

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Mddeming@xxxxxxx 

In a message dated 12/4/04 4:00:28 PM Eastern Standard Time, 
tesla@xxxxxxxxxx writes:

Well, i had a drsstc coil with about 500turns(7in tall, 4in diam) on it
with a 4 turn primary making that
1:125 ratio...My coil would do 2 feet EASILY...How do you explain that?If
it were so as you say, 220volts times125 would be 27,500volts...Thats
assanine if this is what your implying?

Id be careful with your choice of words as you came off as quite insulting!
matt


Hi Matt,

There is a strong correlation between Vs/Vp and Ls/Lp, and likewise between 
Ns/Np and Ls/Lp for ANY GIVEN TYPE OF COIL. There is not, however, a direct 
mathematical proportion of the type Vs/Vp = Ns/Np as there is in ideal 
power transformers. The 1500-turn rule of thumb is a good general 
compromise between losses due to excessively tall, high resistance 
secondary coils, and losses due to excessively small primary inductances. 
The fact that the optimization curve seems to have a fairly broad flat peak 
keeps the faithful faithful and the skeptics skeptical.
Based on reading prior communications over several years, I would have to 
say that the insulting tone you detected from our colleague on this issue 
was not an accidental occurrence.

Matt D.