Field harmonic enhancer in a deflection yoke
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United States of America Patent
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Apr 26, 1994
Grant Date -
N/A
app pub date -
Nov 27, 1991
filing date -
Dec 12, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a deflection yoke mounted on a cathode ray tube, a pair of silicon steel field harmonic enhancers are placed over rear portions of a horizontal deflection coil of a saddle coil type near an electron beam entrance region of the coils such that portions of the saddle coils are interposed between the field harmonic enhancers and a neck portion of the cathode ray tube. The field harmonic enhancers reduce horizontal coma error by making the horizontal deflection field in the rear portion of the saddle coils more pincushion shaped.
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