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 106
1—vJ?.Q.QQQy … si .QOQOib-^ -T—^nn^p— .AA/ «=C „V\
Vacuum-tubes · Radio
Internet Archive · Boston College Libraries · Public Domain Mark 1.0. Free to use for anything.