Hi All,
I keep noticing something which looks odd to me - I am sure it is
correct because this appears to be standard practice, but I would
appreciate it if someone could shed some light on the reasons...
Take a peek at
http://web.telia.com/~u85920178/tx/500w-txt.htm (first
example I found). Specifically look at the 5 position switch on the
output matching, in position 5, the bulk of the inductor is shorted
out. This just looks plain wrong to me.
I assume that having shorted turns on an inductor like this drops the Q
drastically, or is this the whole point ?
Is the same true for roller coaster type variable inductors ?
Comments appreciated.
Thanks,
Mark.