Accession Number:

AD0611824

Title:

GRID-WIRE MOTION IN UHF PLANAR TRIODES,

Descriptive Note:

Corporate Author:

ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Report Date:

1965-01-01

Pagination or Media Count:

11.0

Abstract:

A study of close-spaced, high-gain, uhf planar triodes revealed that a self-sustained grid-wire motion phenomenon resulted in the generation of unusual audio noise under specific conditions. Analysis of the tube construction and test circuit indicated that these self-sustained gridwire oscillations were the result of interaction between the unusually high voltage gradients between plate and grid at normal plate voltages and electrical feedback from the circuitry. Data are presented for tests showing the resultant effects of this phenomenon on a 500-Mc amplifier circuit and an amplitude-modulated, 700-Mc oscillator. Means to avoid the described difficulties or to make practical use of the effect are suggested. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE