Electronic Switching Systems - [2 documents] Case 36279-4 [1957 and 1958 Bell Telephone Laboratories Technical Memorandums]

Descripción

Includes two Bell Telephone Laboratories Technical Memorandum related to Electronic Switching Systems. The documents are subtitled: 1) "Constant Current Biases for E. S. S. Switching Networks", dated July 24, 1957, ~15 pages; and 2) "Oscillators and Associated Circuits Using PNPN Switches and Field Effect Varistors", dated March 10, 1958, ~26 pages. Distribution copies. Each unbound; stapled at the top left corner. Some bumping, creasing at the corners. Inked name at the top front corners. A bit of rubbed soil to the exterior sheets. Else pages a bit age-toned, but clean. ; 27C; 11" x 8-1/2". N° de ref. del artículo 62372

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