Accession Number : AD0283518

Title :   THE DESIGN AND DEVELOPMENT OF A ONE-HALF WATT HEATER POWER REDUCED SIZE NUVISTOR TRIODE

Corporate Author : RADIO CORP OF AMERICA HARRISON N J

Personal Author(s) : REUSCH,R.K.

Report Date : 30 JUN 1962

Pagination or Media Count : 1

Abstract : Two grids were designed for the remote cut-off version of the A15274. Maximum use was made of the digital computer to design the grids. One grid type Development No. A15330, has been selected for production as probably the best compromise between noise performance and cross-modulation performance. A new method for fabricating the cathode support involves sintering a nickel flashed spirally wrapped strip of Nichrome. The thin-wall tubing so produced resembles a soda straw. Comparative tests indicate that the new method yields a product that is probably as good as, or better than the original method, and is much easier to make. Acceptance life tests of the A15274 are complete and are a qualified success. Four out of five tubes easily met the requirements of the heater cycling test. The fifth tube, however, pulled the average to just below the limit at 1,000 hr. This test is considered complete. (Author)

Descriptors :   *ELECTRON TUBES, *TRIODES, CATHODES (ELECTRON TUBES), CERAMIC MATERIALS, ELECTRICAL PROPERTIES, ELECTRON TUBE HEATERS, LIFE EXPECTANCY, MATHEMATICAL ANALYSIS, MEASUREMENT, MECHANICAL PROPERTIES, MICROWAVE AMPLIFIERS, MODULATION, RADIO INTERFERENCE, TEMPERATURE, TESTS

Distribution Statement : APPROVED FOR PUBLIC RELEASE