Re: Danger, and I don't understand why.

• To: tesla-at-pupman-dot-com
• Subject: Re: Danger, and I don't understand why.
• From: Parpp807-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Tue, 17 Aug 1999 18:18:26 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

In a message dated 8/17/99 12:25:09 AM Central Daylight Time, 
tesla-at-pupman-dot-com writes:

<< Interesting speculations! However, NST's are actually wound with many
 turns of fine copper magnet wire, an this alone accounts for the
 comparatively large resistance of an NST secondary. The current limiting
 behavior in an NST actually comes primarily from the addition of
 magnetic "shunts". These bypass a portion of magnetic flux that would
 otherwise link the primary and secondary windings. This results in a
 substantial increase in the transformer's leakage inductance - and its
 external behavior is similar to connecting an ideal transformer in
 series with a very large inductor. 
 
 <SNIP>
 
 -- Bert --
 
 
 
  >>
Bert,

That's an excellent explanation of how a transformer is current limited. Why 
don't the 
textbook writers use so simple an analogy of a "perfect transformer" in 
series with
an inductance. I have never dissected a NST. Physically, where are the 
magnetic shunts
placed in the xformer? Is the flux shorted out and converted into Eddy 
currents? How is
this calculated?

Thanks for the eddyfication.
Ralph Zekelman

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