Gene Fuller wrote:
Where are the equations that describe this "delta-t" stuff that you keep
bringing up?

Actually, Gene, the example I just posted for Jim will answer
your question.

SGCL1 is turned on. SGCL2 is turned off.

100W | 25W
50 ohm---50 ohm line---+---291.4 ohm line---291.4 ohm
SGCL1 --Prev1 | SGCL2

When SGCL2 is turned on let t=0 be the time when the
SGCL2 source wave reaches the impedance discontinuity
at point '+'. How long does it take for that source
wave to affect Prev1? Whatever length of time that is,
that's the length of delta-t.
--
73, Cecil http://www.w5dxp.com