On Nov 21, 2004, at 10:34 AM, Dennis12Amplify@aol.com wrote:
In a message dated 11/20/04 11:47:47 AM Central Standard Time,
r@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?
With a Hipersil™ core, the coupling loss does not amount to much.
*** 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.
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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