On Mon, 02 Feb 2004 22:28:55 -0600, Cecil Moore
wrote:
|Wes Stewart wrote:
| I downloaded a couple of them, but I have a question. I opened them
| using MultiNEC, which reads all of the popular modeling program file
| formats. The loads did not import, but when I opened the same files
| in EZNEC 3 I saw them as R+jX loads with only an 'X' value.
|
|You can put in any R and XL value, Wes. The phase of the current will
|not change. The magnitude decreases and the phase stays the same.
Okay, I guess that means the answer is: you used R+jX loads.
|
| I learned from Dan, AC6LA, the author of MultiNEC, that some early
| EZNEC versions save all loads as Laplace and he doesn't read those
| into MultiNEC. Opening the files in EZNEC 3 and then just resaving
| them makes the import into MultiNEC work okay, but this makes me
| suspect that using your earlier files in my later version might be a
| problem. The documentaion says otherwise though, but to be sure, what
| are the actual load parameters.
|
|Well, your Laplace files won't run on my EZNEC version 2.0. They all
|come up as zeros. So I don't know what loads you used either.
Mine aren't Laplace loads. There are straight RLC with C=0.
|
| I don't want to comment further until I know exactly what you are
| using.
|
|You can vary R and XL values from zero to infinity. The phase of the
|current never changes. I tried values from 1+j300 to 1000+j300000
|and it only affected the magnitude, not the phase.
It remains to be seen in my mind whether you are correct in your
assertions; however, I believe that you have stated that in your Kraus
reference that he used the self-resonance of the inductors to do the
magic.
How on Earth can you expect a load consisting of only R and Xl to be
self-resonant?
|