Re: DRSSTC stablity/ closed loop response

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Esondrmn@xxxxxxx 

In a message dated 2/1/05 3:59:27 PM Pacific Standard Time, 
tesla@xxxxxxxxxx writes:
Hi Terry,

Do you still have MathCAD 2000? If you do I can send you a file/s that plots
the frequency responses, input impedance etc. You can play with the
parameters and perhaps get a feel for it. I also have a file some where that
shows how the frequency splitting occurs graphically again you can play with
the parameters to get a feel for what's going on. If you think anyone else
would be interested feel free to put them on your site. Most of them have
little or no comments but they may be self explanatory.

I think the key to understanding the frequency splitting is to understand
that its the reciprocal impedance of the secondary is referred to the
primary or visa versa.  I think I posted a hand waving version of it a while
back.

Robert

As long as Terry started this, I also have questions about f1 & f2, or 
poles above and below the resonant frequency.  First, is this a function of 
any resonator?  Does any specific combined L and C have this 
characteristic?  Or is it primarily a function of a two resonator coupled 
system?  If the resonant frequency is say 100 khz, how far above and below 
this will the poles be?  If the degree of coupling has an impact, what is 
it?  If we looked at the amplitude of the three frequencies (F0, F1 and 
F2), does the amplitude of F1 and F2 go way down as coupling is reduced, or 
does the distance in hertz away from F0 get larger?  The more I think about 
this, the more questions that come to mind.

Thanks,

Ed Sonderman