Designing Vacuum Tube Systems

Authored by: Jerry C. Whitaker

Power Vacuum Tubes

Print publication date:  March  2012
Online publication date:  March  2012

Print ISBN: 9781439850640
eBook ISBN: 9781439850657
Adobe ISBN:


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Any number of configurations may be used to generate radio frequency (RF) signals using vacuum tubes. Circuit design is dictated primarily by the operating frequency, output power, type of modulation, duty cycle, and available power supply. Tube circuits can be divided generally by their operating class and type of modulation employed. The angle of plate current flow determines the class of operation:

Class A = 360° conduction angle

Class B = 180° conduction angle

Class C = conduction angle less than 180°

Class AB = conduction angle between 180° and 360°

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