[Amps] Plate Impedance, ARRL

GGLL nagato at arnet.com.ar
Tue Apr 11 17:58:17 EDT 2006


	A question comes to my mind after looking K values and working class: K value 
increase as the conduction angle decrease, so am I wrong in stating that AB 
class (either AB1 or AB2) conduction angle is greater than B class?; if so, 
should not be K[AB] greater than K[B]?.

Best regards
Guillermo - LU8EYW.

Will Matney escribió:

> "The optimum tube load resistance is"
> 
> Rl = Vp / ( K x Ip )
> 
> where
> Rl = the appropriate load resistance
> Vp = the DC plate potential in votes
> Ip = the DC plate current in amperes
> K = a constant that approximates the RMS current to DC current ratio appropriate for each class. For the different classes of operation;
> Class A, K = 1.3
> Class AB, K = 1.5
> Class B, K = 1.57
> Class C, K = 2
> 
> End quote.
> 


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