ELECTRON TUBE RESEARCH AND DEVELOPMENT STUDIES

Abstract

Several methods were studied for evaluating tube performance qualities. Two new methods were considered in detail: (1) shot noise, and (2) dynamic scope test. Data were obtained during 5,000 life test hours on 5816A and 5654 with their commercial equivalents 12AU7 and 6AK5. A group of 5591 tubes (a version of 6AK5) were also compared. The tubes used were free from cathode interface impedance and gas, insofar as their known influence upon life resulted. Shot noiseAND PULSE EMISSION ARE INDICATED TO BE FUNDAMENTAL TEST METHODS FOR CATHODE ACTIVITY AND CAPABLE OF ALLOWING TUBE LIFE BURNING TO BE SHORTENED SIGNIFICANTLY (other variables being under control). This can create major cost savings in proving tube quality. The dynamic scope test was studied in detail and a clarification of the method and its capabilities is presented. It is felt to be a useful tool for presenting and studying tube characteristics and for estimating integrated gas content. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1961
Accession Number
AD0257515

Entities

People

  • Robert B. Dickson
  • Thomas H. Briggs

Tags

DTIC Thesaurus Topics

  • Electron Tubes
  • Electrons
  • Emission
  • Impedance
  • Life Tests
  • Shot Noise
  • Test Methods

Readers

  • Electrical Engineering
  • Life Cycle Cost Analysis
  • Plasma Physics.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems