Accession Number : AD0286929

Title :   VARIABLE PRECISION METAL-FILM RESISTORS

Corporate Author : WESTON INSTRUMENTS INC NEWARK N J

Personal Author(s) : BEBEL,JOSEPH

Report Date : 10 OCT 1962

Pagination or Media Count : 1

Abstract : The variable, single-turn, metal-film resistors were of two sizes, with each size in both the servo- and bushing-type mounts. The substrate materials tested were Alumina, Steatite, and Pyrex. It as nticipated that substrate selec ion ould b ba ed upon heat dissipation film adherence, thermal str ngth, and mechanical strength. It was found that all poss ssed these properties to the degree required. It was further found that substrate selection would be based primarily upon the obtainable surface finish, as is was the most critical factor in potentiometer performance as regards wear and noise. (Author)

Descriptors :   *POTENTIOMETERS, *RESISTORS, ABRASIVES, ALUMINUM COMPOUNDS, DESIGN, GLASS, NOISE, OXIDES, TALC, TESTS

Distribution Statement : APPROVED FOR PUBLIC RELEASE