On the eternally recurring argument about current into and out of a loading
coil, here is the way my simple mind has always understood it:
W8JI is correct in that the current into a perfect inductor must equal the
current out of it. It's a piece of coiled wire so where else can the current
go? Tom's assumption here is a 'perfect' inductor with no distributed
capacitance.
K3BU is also correct because he is assuming a practical inductor, with a finite
length and distributed capacitance to ground. That's where the missing current
is going, through the distributed capacitance to ground and hence lower output
current from the top of the inductor into the antenna.
Both right, so why the disagreement?
73
Tom G3OLB
_______________________________________________
UR RST IS ... ... ..9 QSB QSB - hw? BK
|