Accession Number : AD0618913

Title :   BRUSHLESS PRECISION POTENTIOMETER.

Descriptive Note : Interim development rept. for 5 Feb-30 Jun 65.

Corporate Author : GIANNINI CONTROLS CORP DUARTE CALIF

Report Date : 22 JUL 1965

Pagination or Media Count : 38

Abstract : Conclusions: Two satisfactory methods of encapsulation which will prevent deterioration of the photoconductive element have been proven. The temperature coefficient of resistance was found to be an inverse function of the absolute value of input resistance. Analysis of data indicates that the temperature coefficient may be kept within specification for all absolute values of resistance by varying the width of the resistive element. Modification of evaporation masks is necessary to enable manufacture of elements within linearity requirements. Utilizing materials and processes established during the program, a prototype potentiometer was fabricated and preliminary evaluation provides confidence that with design refinement, the potentiometer is capable of meeting the design specification. (Author)

Descriptors :   (*POTENTIOMETERS, PHOTOELECTRIC EFFECT), PHOTOELECTRIC MATERIALS, PHOTOSENSITIVITY, METAL FILMS, VAPOR PLATING, VACUUM APPARATUS, ENCAPSULATION, ELECTRICAL RESISTANCE, SILICONE PLASTICS, SILICATES, ORGANIC COMPOUNDS, ALUMINUM COMPOUNDS, OXIDES, CADMIUM COMPOUNDS, SULFIDES

Distribution Statement : APPROVED FOR PUBLIC RELEASE