Re: Pri-Sec Phasing
---------- Forwarded message ----------
Date: Tue, 7 Oct 1997 17:29:45 -0700 (PDT)
From: "Edward V. Phillips" <ed-at-alumni.caltech.edu>
Subject: Re: Pri-Sec Phasing
"E = -L.di/dt (everybody ignores the minus sign, right? :)
Not around here! Just think of what happens when you
open a switch in a circuit containing a source and an inductor.
Since the current "wants to remain constant" the voltage on
the coil will rise (di/dt is negative in this case). Point
to observe is that in tube type flyback supplies the plate
voltage swings way positive as you cut off the plate current.