Accession Number : AD0618685

Title :   AN INVESTIGATION OF SOLID STATE DISPLAY CONTROL CIRCUITRY.

Descriptive Note : Masters' thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Wade,James Richard

Report Date : JUN 1965

Pagination or Media Count : 75

Abstract : Electroluminescent phosphors and lamps have advanced during recent months to the point that usable electroluminescent displays are now practical. However, there exists a considerable gap in between the technology of displays and that of the necessary solid state control circuitry. This work is an attempt to develop such control circuitry. The various advantages and disadvantages of ferroelectric elements, photoconductors, and silicon controlled rectifiers are analyzed. Silicon controlled rectifiers are selected as primary control elements, and control circuits are developed for bar graph and pointer displays. The pointer display uses SCR controlled variable voltage dividers and provides for the control of several lamp segments by a single control element. (Author)

Descriptors :   (*ELECTROLUMINESCENCE, DISPLAY SYSTEMS), (*CIRCUITS, DISPLAY SYSTEMS), CONTROL SYSTEMS, SEMICONDUCTOR DEVICES, SWITCHING CIRCUITS

Distribution Statement : APPROVED FOR PUBLIC RELEASE