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 72
es. VACUUM TUBE DETECTOR 73 The most marked disadvantage is probably the critical adjust-ment of filament temperature and plate potential necessary tosatisfactory operation. Another is the shortened life of thetube caused by the bombardment by the comparatively heavyions which are driven against it… … 1,000- Telephone Current--Fig. 27—The principle of heterodyne action. a telephone receiver. If, however, oscillations of a differentfrequency are generated locally and forced to flow in an antennacircuit there is an interaction between the two frequencies whichproduces oscillations of a third…
Vacuum-tubes · Radio
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