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Re: No frequency Splitting with a parallel primary



Original poster: "Antonio Carlos M. de Queiroz" <acmdq-at-uol-dot-com.br> 

Tesla list wrote:
 >
 > Original poster: "Bob (R.A.) Jones" <a1accounting-at-bellsouth-dot-net>
 >
 > I thought I would check out the properties of a parallel tuned circuit in
 > the primary.
 >
 >  From one point of view I know splitting can not occur in the same way as
 > in the series case but on the other hand it is two L's and two C's
 >
 > I checked it both numerically and analytically and just one pole in the TF.
 > (zero impedance generator)
 >
 > So with a parallel primary configuration you may not get the cyclic total
 > (lumped assumption) energy transfer to the secondary that you can get with
 > the series case.

Sstc, I presume.

Yes. The voltage source decouples the primary L and C, so you have just
a
transformer driving the secondary capacitance in parallel with the
primary capacitor. The currents in both are independent. Tne primary
capacitor
can still be used to adjust for conditions of soft switching, assuming
the
system driving a resistive load. In this case the system is equivalent
to a simple L-match with a parallel LC tank at the input.

 > I will also check the case when the generator is a current source.

This can be converted to the case with a series primary if you make a
Thevenin equivalent between the current source and one of the primary
elements, and assume sinusoidal input. Easier with the capacitor. All
the same properties appear. The problem is how to build this, since
the driver will be necessarily inefficient.

Antonio Carlos M. de Queiroz