File:Tetrode transistor – Bell Telephone Magazine (Summer 1953, p. 80) (14569559878).jpg

Identifier: belltelephonevol3132mag00amerrich (find matches)
Title: Bell telephone magazine
Year: 1953
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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we immediatelyformed a fundamental developmentgroup under J. A. Morton. Thisgroup was closely associated with re-search to acquire that body of tech-nological knowledge essential to thedevelopment and design of transistors for the many specific communicationsapplications that would certainly fol-low. The fundamental developmentgroup was composed of men of elec-tronics, skilled in the development ofnew electronic devices for communica-tion and military uses. In the begin-ning, their interests and activities werenot distinguishable from those of theresearch group. Their first task wasto learn, and this was quickly done.However, .their ultimate role wasnever in question. They were to ap-ply the new knowledge from researchand to supplement it—in a more spe-cific way—to create new devices forour systems development groups toutilize in creating new systems bothfor the Bell System and for the mili-tary services that would find applica-tion because of economic or funda-mental advantages.
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In the foreground is a tetrode^ transistor. The small cylinder houses a completeamplifier. Shown also is the amplifier in place in a possible cable 1953 The First Five Years of the Transistor gi Contributions to newknowledge were madeand, as applications oftransistors became moreand more clear, thegroup turned its atten-tions to the develop-ment of specific designswhich would be requiredon a large scale. Theyhave also interestedthemselves in such prob-lems as the factors con-trolling the band widthof amplification, thenoise figure, theamount of amplificationpossible per stage, basicmaterials, processing,and structure studies es-sential for controlleddevelopment and designof transistors for a va-riety of specific func-tions. The link with re-search was strong andstimulating. A linkagewith the systems de-velopment people, thelikely users, was also en-couraged. Jointly withthe user, operating char-acteristics of transistorswere established, unitswere constructed fortrial, and pre-produc-

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