Development of a Pyrolytic Graphite Grid Version of the 4CW100,000E

Abstract

The purpose of this project was to evaluate pyrolytic graphite grids. Several tubes were built to the same general geometry as the 4cw100,000E. The X2097U has a pyrolytic grid and screen. The number of grid bars was increased by 50% to improve cutoff characteristics. The stem was redesigned to improve thermal cycling stability. The X2097V in addition had a high density filament which increased perveance by 30%. The tubes are physically interchangeable with the 4CW100,000E and in critical applications requiring high grid and screen dissipation and low drive voltage have superior performance.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1979
Accession Number
ADA071025

Entities

People

  • Sterling G. Mcnees

Tags

DTIC Thesaurus Topics

  • Conductivity
  • Dissipation
  • Electrical Grids
  • Electrical Resistance
  • Electron Emission
  • Electron Tubes
  • Electrons
  • Emission
  • Field Emission
  • Filaments
  • Graphitic Materials
  • High Density
  • Load Monitoring
  • Materials
  • Radio Frequency Amplifiers
  • Secondary Emission
  • Thermal Conductivity

Readers

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