[Amps] Step-start Calculation Problem:

[R.Measures <r@somis.org>]

Question:  A Hipersil transformer with a combined primary+secondary 
winding ESR of 0.144Ω,, is connected to a FW rectifier/C-filter.  If 
the transformer is connected to 240Vrms mains with  an ESR of 0.127Ω, 
what is the maximum peak inrush current?  What would be a suitable 
value of step-start R to limit the inrush current to 50A-rms?   (--  
note -- assume that the Hipersil transformer has virtually zero core 
loss)

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org 
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