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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 51

An illustration from 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, leaf 51
eristic graphs are curved at their upper and lower portions.This is a characteristic of vacuum tubes which is very valuable,as will be seen more clearly later on. The graph of grid poten-tials plotted against plate current is, therefore, called a char-acteristic curve. Relay Action The action of a… … BackstopSpring Armature LocalBattery + local Circuit ,_i Pivot , Fig. 17—Circuits of telegraph relay. magnetically attracted over toward the poles of the electro-magnets when the key in the line is closed and current flowsthrough the magnet coils. When the armature is attracted, a VACUUM TUBE AS…

Vacuum-tubes · Radio

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More pictures from 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

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