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Re: Secondary Resonance LC and Harmonics
- To: tesla@xxxxxxxxxx
- Subject: Re: Secondary Resonance LC and Harmonics
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Tue, 28 Jun 2005 16:35:12 -0600
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- Delivered-to: tesla@pupman.com
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- Resent-date: Tue, 28 Jun 2005 16:48:56 -0600 (MDT)
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Original poster: FIFTYGUY@xxxxxxx
In a message dated 6/27/05 1:55:18 PM Eastern Daylight Time,
tesla@xxxxxxxxxx writes:
We can examine the classic equation for an air cored inductor: L = u
Nsqrd A / l
Multiply the numerator and denominator by 4pi we get:
L = u Nsqrd 4pi sqrd r sqrd / 4 pi l = u (2pi r N)sqrd / 4 pi l
Since 2pi rN equals wire length we can write:
L = u (wire length)sqrd / 4 pi l
Letting the solenoid height ( l ) equal the wire length, we find
that the classic equation predicts that the inductance of a straight
wire is simply:
Lstwire = u wire length / 4 pi
But using the above "classic equation" also collapses the inductance
to zero as the radius "r" and the turns "N" go to zero.
-Phil LaBudde