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Re: [TCML] VTTC-tuning. John got me started ;-)
Dex Dexter wrote:
3.Is this a good formula to roughly estimate top volts:
0.5*L*di/dt < V < L*di/dt
where i denotes secondary base current ,L low frequency secondary inductance,t time.
When considering top volts, it is certainly a "rough" estimate. A
calculation can tell you about where you would expect the top volts to
"top out at". But the temperature of the day, humidity, radius of
curvature of the top terminal, preceding ionization, etc.. will
determine the actual breakout voltage and it can be drastically
different than the calc. But yes, if you look at the peak base current
(which is much higher than the average base current) and look at the
current over time, you can calc the value at which the top load will
attempt to charge to. But, in reality, it will likely break out at a
lower voltage based on the misc. conditions described earlier.
Personally for a top-volt guess, I use Vpri x sqrt(Cpri/Cee) * 0.7 and
Cee comes from Javatc since Javatc has the ability to equate the energy
storage capacitance (that moment in the cycle when all the energy is
stored in the capacitance of the top load).
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