View Single Post
  #158   Report Post  
Old July 21st 03, 01:21 AM
Dave Shrader
 
Posts: n/a
Default

Praise The Lord!!

For the first time in several months Cecil and I agree on something!

Now the question becomes: "Am I thinking like Cecil or is Cecil thinking
like me?"

Or, "Are we both correct?" Or, "Are we both incorrect?"

Chicken and eggs come to mind :-)

Our Engineering degrees date to the 'olden days' and may now be out of
date!!!

But, anyway, WE AGREE !!!!!!!
:-) :-) :-)

Deacon Dave, W1MCE

W5DXP wrote:
Dave Shrader wrote:

How does the wrong load impedance comes into existence?
Is it not caused by the mismatch?



Yep, the mismatch causes reflected waves which, in turn, cause the wrong
load impedance. It's easy to see in the following thought experiment.

200W source---one second long 50 ohm lossless feedline-----open

The source will output 100V at 2A for two seconds from key down and
be perfectly happy. The "wrong" impedance arrives exactly with the
reflected wave after two seconds. The center of the steady-state SWR
circle is the "right" impedance and therefore will not exist after two
seconds.