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Re: [Amps] Calculation of Tube Impedance

Subject: Re: [Amps] Calculation of Tube Impedance
From: Vic K2VCO <>
Date: Sun, 02 May 2010 07:46:16 -0700
List-post: <">>
On 5/2/2010 6:52 AM, wrote:
> Hi Peter, Since you brought the conduction angle into the discussion, the
> Pi/2 number equates to 1.57. The customary shortcut is use of 1.8 for the K
> factor and I am assuming the difference between 1.57 and 1.8 is due to the
> plate  voltage swing limitation.

Here are the usual assumptions made for K based on class of operation, which I 
relates to conduction angle:

Class A: 1.3    
Class AB: 1.5-1.7       
Class B: 1.57-1.8       
Class C: 2.0    

Vic, K2VCO
Fresno CA
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