[AMRadio] RE: Using a Ranger as a driver

Jim Wilhite w5jo at brightok.net
Tue Feb 12 12:35:47 EST 2008

I forgot to mention John, you might explain how a Class C final sees 
higher impedance when the plate voltage is lowered.  As I recall Zp is = 
Ep/(2X) Ip.  So a Ranger with 600 V. on the plate with 120 ma. is seeing 
~ 2500 ohms.  With 300 volts at the same current, it should be seeing 
~1250. Zp.

Maybe this will help some of these people and you are much more eloquent 
than I.


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