Rigney, Carl J. (Carl Jennings), 1925-2011||Miner, Wallace B.||Gould, Howard W.
M.S. (Master of Science)
Department of Physics
In 1948 the first transistor was developed as nothing more than just a laboratory curiousity. Today it has been developed into a small economical valve for electrons. The transistor is a small crystal, about the size of a kernel of corn, which does the same job as a hot bulky vacuum tube, except that the transistor controls electrons within a solid block of material, whereas the vacuum tube controls the electron flow across a vacuum. The germanium transistor consists of extremely purified germanium (one atom of impurity to one hundred-mil 1 ion atoms of germanium) in crystal form (5:40). Pure germanium has a high resistance. Yet when exactly measured amounts of certain impurities such as arsenic, aluminum, antimony, or gallium are added, the crystal conductivity increases by definite amounts. These germanium crystals are sliced into thin pellets for use in the translator.
Hucker, Donald A., "Experimentally observed characteristics of a P-N-P junction transistor with published information" (1954). Graduate Research Theses & Dissertations. 3008.
29 pages, 5 unnumbered pages of plates
Northern Illinois University
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