Keith Dysart wrote:
On Apr 9, 12:51 pm, Roger Sparks wrote:
. . .
So far as breaking Vg into many sequential/different Vf and Vr, we usually need to do that. Cecil chose our simple example to prevent re-reflection (reflection of the reflection) but even then it is apparent that the voltage source will have a reactive component.

I still think of a voltage source as just being a voltage source, not
something
with resitance, reactance or impedance.
. . .

An ideal voltage source has, by definition, zero impedance, which means
zero resistance and zero reactance. No amount of current you put into it
or take out of it will alter its voltage. The ratio of voltage to
current at its terminals is the impedance of the load which the source
sees, not the impedance of the source. If a source used in an analysis
has finite resistance, it's not an ideal voltage source.

Roy Lewallen, W7EL