Re: 1-turn coil inductance nomogram...etc.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "K. C. Herrick by way of Terry Fritz <twftesla-at-qwest-dot-net>" <kchdlh-at-juno-dot-com>

Jimmy (& all)-

What I have forgotten about transformer design would likely fill the old
textbooks I still have on my shelf.  What you seem to say is: reduce the
magnetizing (-at- 90 degree) current by utilizing more turns--no problem;
what's important is the current (-at- 0 deg.) that is going to be drawn by
virtue of the coupling to the secondary.  And to maximize the latter
current, maximize the coupling--in a system with an untuned primary, that
is.

Do I have it right & do others agree?

Ken Herrick

On Mon, 26 Aug 2002 18:21:38 -0600 "Tesla list" <tesla-at-pupman-dot-com>
writes:
> Original poster: "jimmy hynes by way of Terry Fritz 
> <twftesla-at-qwest-dot-net>" <chunkyboy86-at-yahoo-dot-com>
> 
> 
> the igbts i am going to use for my sstc are IRG4PC40W. they are 
> rated at 600v
> 40 amps continuous 160 amps peak have a fall time of 74ns and a rise 
> time of
> 23ns. the best part is they only cost $3.80 from digikey. the 1450 
> amps you are
> talking about is only the magnetizing current, the current that 
> doesnt help
> you. current that helps you is the current that is in phase with the 
> voltage,
> and it builds up over time. the way to keep the magnetizing current 
> low and the
> in phase current high is to have a high k. it would be easier to use 
> the
> magnifier setup to get a high k with out insulation problems. if the
> magnetizing inductance is high enough then the transformer acts like 
> a gear
> ratio and it is just like base feeding the resonator, but at a 
> higher voltage. 

> > Ken Herrick
> 
> 
> 
> JImmy