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Re: Of notches, coupling and frequency splitting



Original poster: Finn Hammer <f-h@xxxx>

Gerry,

I tried with k=0.1327433628 which should give a split of 94/100/107
And I got this table:(It says pri-current, but it is secondary current really)
Numbers from top and down= peak, zero, trough, zero, peak etc.etc.
http://home5.inet.tele.dk/f-hammer/k0.1327433628notchtable.jpeg
Looks like it confirms with the split, and also the "sawtooth" waveshape although I still don`t understand the change in frequency around the notches.

I use this eq for split:
upper pole->  Fres/sqrt(1+K)
lower pole->  Fres/sqrt(1-K)

Help!
I need to understand this so I can move on....

Cheers, Finn Hammer


Tesla list skrev:
Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
Hi Finn,
With a coupling of 0.0688.., it seems like the frequency splitting would be small. Have you calculated what the split would be?? (I dont have the equation)
Gerry R.

Original poster: Finn Hammer <f-h@xxxx>

All,
In an attempt to find an explanation of the subject that I can understand, I modeled a tesla coil in Orcad. It has Cpri=33nF, Lpri=77uH Csec=33pF Lsec=77mH and K12=0.0688836105 So that it should have it`s first notch after 7,5 primary cycles.