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Journal Article

Large-Signal Analysis of Triode Vacuum-Tube Amplifiers*

Authors: Abuelma'atti, Muhammad Taher

Journal of the Audio Engineering Society · Volume 51 · Issue 11 · pp. 1046–1053 · November 2003

Abstract

A mathematical model for the input/output characteristic of a single-stage triode vacuumtube amplifier is presented. The model, basically a cosine-series function, can easily yield closed-form series expressions for the amplitudes of the output components resulting from multisinusoidal input signals to the amplifier. The special case of an equal-amplitude twotone input signal is considered in detail. The results show that, similar to transistor-based amplifiers, the vacuum triode amplifier generates both even- and odd- order harmonic and intermodulation components. The results also show that the amplitudes of these components are strongly dependent on the tube parameters, the biasing voltage, and the amplitudes of the input tones and are not following a general pattern.

Details

Publication
Journal of the Audio Engineering Society
Volume
51
Issue
11
Pages
1046–1053
Publication date
November 6, 2003
Affiliation
King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia (See document for exact affiliation information.)
Type
Journal Article