Three-dimensional analysis of cathode ray tubes for color television

Three-dimensional computer simulation demonstrates the principles used in the design of electron guns for color television tubes. A deformable-mesh finite difference analysis provides the electron trajectories from the cathode to the center of the screen. At the screen, the dimensions of the spot ar...

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Bibliographic Details
Published in:IEEE transactions on electron devices Vol. 33; no. 8; pp. 1098 - 1106
Main Author: MacGregor, D.M.
Format: Journal Article
Language:English
Published: New York, NY IEEE 01.08.1986
Institute of Electrical and Electronics Engineers
Subjects:
Applied sciences
Cathodes
Color
Electron tubes
Electronic tubes, masers
Electronics
Exact sciences and technology
Lenses
Mathematical model
Trajectory
Cathode tube
Color television
Three dimensional model
Television tube
Digital simulation
Computer aided design
ISSN:0018-9383, 1557-9646
Online Access:Get full text
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Summary:Three-dimensional computer simulation demonstrates the principles used in the design of electron guns for color television tubes. A deformable-mesh finite difference analysis provides the electron trajectories from the cathode to the center of the screen. At the screen, the dimensions of the spot are obtained from the edge trajectory and from profiles of the current in the beam. Comparisons with measurements for three tubes show that the aspect ratios of the horizontal and vertical spot diameters agree within 14 percent or better. The computed beam currents are accurate to about 10 percent, and the optimum focus voltages to within 200 V.
ISSN:0018-9383
1557-9646
DOI:10.1109/T-ED.1986.22625