[Amps] Re: Step-start calculation

[Dennis12Amplify at aol.com]

In a message dated 11/20/04 11:47:47 AM Central Standard Time, r at somis.org 
writes:
I do not see how this computer app. could calculate inrush-I without 
knowing the mains ESR?
***Wouldn't you ALSO need to know the Inductance of both the primary and the 
secondary windings and the coefficient of coupling between them?

*** I would guess that because of the large inductance associated with the HV 
secondary winding, (which would be in series with the secondary resistance 
and diodes when charging the caps), there could be a significant counter EMF 
produced for any rapid changes in primary current, and that counter EMF should 
greatly reduce the peak inrush current at turn on time.

***Regards,

***Dennis O.