DocumentCode
3552500
Title
Low-heater-power cathodes (0.1 to 0.6 watts)
Author
Ney, R.J.
Author_Institution
General Electric Co., Syracuse, N.Y.
Volume
12
fYear
1966
fDate
1966
Firstpage
62
Lastpage
62
Abstract
A complete heat-balance is given for a unique tripod-supported cathode which is presently being used in special-purpose Image Orthicons, Vidicons, and other camera tubes. Design curves are given in terms of system parameters such as shape factors, conductivities, emissivities, heater-to-lead length ratios, and radiation-shield spacings. Typical data on cathode emission vs. heater-power input are given. Filament design curves are given in terms of surge current, wire diameter, wire length, operating temperature, voltage, and power, for pure tungsten, 3% and 20% rhenium tungsten.
Keywords
Cameras; Cathodes; Coaxial components; Coils; Conductors; Fabrication; Optical modulation; Shape; Tungsten; Wire;
fLanguage
English
Publisher
ieee
Conference_Titel
Electron Devices Meeting, 1966 International
Type
conf
DOI
10.1109/IEDM.1966.187686
Filename
1474525
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