The A B C of vacuum tubes in radio reception; an elementary and practical book on the theory and operation of vacuum tubes as detectors and amplifiers. Explains non-mathematically the fundamental principles upon which all vacuum tube circuits are based. Includes practical circuits and practical questions and answers. It is written especially for the beginner. All electrical and radio terms are fully explained (1922)
Lewis, Elmer Hugh, 1889- · New York, Norman W. Henley Pub. Co. · leaf 62
(15 to 15,000per second) the frequency of the variations of average platecurrent is also an audible frequency or, as it is called, an audio-frequency. Current variations of such comparatively low fre-quency pass through the receiver windings and cause the dia-phragm to vibrate and to produce sound… … RadioFrequency-.^ — Frequency ofOscillation Trains sameas Wave TrainFrequency.(Only One Train Shown) Fig. 23—Rectification effect in plate current with damped grid potential variations. 64 A B C OF VACUUM TUBES lation trains and increases in pitch with that frequency. Sup-pose a case in point is…
Vacuum-tubes · Radio
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