The ABC of Vacuum Tubes in Radio Reception

140 Pages·2007·14.32 MB·English

THE A B C OF VACUUM TUBES
RADIO RECEPTION
IN
AN ELEMENTARY AND PRACTICAL BOOK ON THE
THEORY AND OPERATION OF VACUUM TUBES
AS DETECTORS AND AMPLIFIERS. EXPLAINS
NON-MATHEMATICALLY THE FUNDA-
MENTAL 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
BY
LEWIS
E. H.
Assoc. I.R.E., Radio Instructor,
East Side Y. M. C. A., New York City.
FULLY ILLUSTRATED
NEW YORK
THE NORMAN W. HENLEY PUBLISHING CO.
2 WEST 451H STREET
1922
COPYRIGHTED, 1922
BY
THE NORMAN W. HENLEY PUBLISHING Co.
PRINTED IN U. S. A.
PREFACE
The inauguration of radio-telephone broadcasting has
quickly aroused an enormous general interest in radio reception
of speech and music. The possibilities of this new method of
broadcasting information of general interest and entertainment
can hardly be estimated. The method is revolutionary and
has been aptly compared to the invention of the printing press
in this respect.
Vacuum tubes make possible the reception of radio-telephone
speech and music and radio-telegraph signals with a degree of
satisfaction not approached by prior devices.
The vacuum tube appears to the layman as a complicated
form of incandescent electric lamp which operates in a very
mysterious manner. In writing this little book the author has
endeavored to overcome this impression and to clearly set forth
the elementary principles of theory and operation. It is
assumed that the reader has no knowledge of radio and very
little, if any, of electricity. Mathematics has been especially
avoided in the treatment of the subject and no technical terms
are used without their meaning being made clear.
The functioning of the "lamps" is fascinating to a great
many people and the author hopes that the desire for elementary
information regarding it will be fulfilled in the text. No
attempt has been made to set forth all the possible circuit
arrangements but those shown may serve as suggestions to
experimenters who desire to evolve their own circuits. The
practical questions and answers, it is hoped, may be of value
to those who are contemplating the installation of receiving
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PREFACE
equipment or who are getting unsatisfactory results because
of insufficient information.
Suggestions regarding improvement of the material pre-
sented and the manner of presentation will be gratefully
received from readers.
THE AUTHOR.
April, 1922.