Accession Number : AD0606390

Title :   TRANSISTORIZED SHIFT REGISTER.

Descriptive Note : Bachelor of Science thesis,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE INSTRUMENTATION LAB

Personal Author(s) : Schoendorf,William H.

Report Date : JUN 1957

Pagination or Media Count : 74

Abstract : The objective was to study a transistorized magnetic core shift register and to evaluate a suitable power transistor as a possible driving source for the register. Investigation of the register was originally carried out using a pentode driver in order to offer a means for comparison with the transistor shifting source. The Western Electric GA-52830 PNP junction transistor was found to meet the register requirements quite satisfactorily. Operating regions of the shift register were obtained using this transistor in the grounded emitter and grounded base configurations, and the latter was found to be more successful. It was possible to drive thirty cores quite reliably using the grounded base configuration, and the operating regions obtained compared favorably with those of the vacuum tube. (Author)

Descriptors :   (*TRANSISTORS, MAGNETIC CORES), (*CORE STORAGE, TRANSISTORS), DELAY CIRCUITS, DIODES, PEUTODES, RADIOFREQUENCY PULSES, SWITCHING CIRCUITS, VOLTAGE, ELECTRIC CURRENTS, WIRING DIAGRAMS, EXPERIMENTAL DATA, (U)EXPERIMENTAL DATA

Distribution Statement : APPROVED FOR PUBLIC RELEASE