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4hv.org :: Forums :: Tesla Coils
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The Physics of Inductance

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Hrothgar
Fri Jan 04 2008, 07:11PM Print
Hrothgar Registered Member #1180 Joined: Mon Dec 17 2007, 12:26AM
Location: Nope
Posts: 28
I am currently doing a physics project on Telsa coils so I was wondering just how it is that magnettic resonance within the coils actually generates electric potential in the secondary circuit. Any help here would be greatly appreciated (maybe some print references?)
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Dr. H.
Fri Jan 04 2008, 07:56PM
Dr. H. Registered Member #931 Joined: Mon Jul 30 2007, 05:25PM
Location: Bulgaria
Posts: 486
You really shoud look (and read of course ) Richie Burnett's site Link2
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Steve Ward
Fri Jan 04 2008, 08:11PM
Steve Ward Registered Member #146 Joined: Sun Feb 12 2006, 04:21AM
Location: Austin Tx
Posts: 1055
I was wondering just how it is that magnettic resonance within the coils actually generates electric potential in the secondary circuit.


Its not "magnetic resonance" (a term that doesnt make sense to me) but rather the coil has some inductance and capacitance. Its close to a lumped circuit (single L and C) but a better model looks at some of the transmission line aspects with distributed L and C along the length of the coil, and then just a discrete C for the toroid/sphere/whatever at the top end of the coil. In any case, energy is transferred between magnetic and electric fields at its resonant frequency. I just wanted to really stress the point that it relies on capacitance and inductance. Otherwise, its like asking "whats the resonant frequency of 1mH?" which doesnt have an answer because its a 1st order system and thus doesnt "resonate".
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