Abstract

VACUUM-TUBE amplifiers for audio-and low-frequency applications are commonly resistance-coupled, and their-design is an everyday problem for engineers in many different fields of application. The published information on the resistance-coupled amplifier is not only widely scattered and confusing but also inadequate. No convenient method is available for predicting the required electrode voltages and the correspondingly changed dynamic constants of a vacuum tube having a resistor in its plate circuit. Furthermore, no really practical method is available for designing a coupling network or for determining the phase and amplitude characteristics of both the tuned and wide-band resistance-coupled amplifier.

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