AC electric field emission suppression in CRT image displays

Details AC electric field emission suppression in CRT image displays AC electric field emission suppression in CRT image displays

1992-04-15

1993-07-27

Mis, David

Electric lamp and discharge devices: systems

With electromagnetic wave radiation preventing or shielding...

361146, H01J 152, H01J 502

Patent

active

052313328

ABSTRACT:
An AC electric field emission suppressor for use in a CRT imaging system cancels the ripple voltage on the ultor voltage that generates the undesired emission. Ripple-cancelling pulses are derived from the horizontal deflection circuit and are capacitively coupled through the CRT wall to cancel the ripple voltage and suppress the undesired emission.

REFERENCES:
patent: 4045742 (1977-08-01), Meehan et al.
patent: 4634930 (1987-01-01), Toshiyasu et al.
"Electric Field Meter 200 Operator's Manual", Sections: 1.1 thru 1.4 (Introduction); no date.
MPR 1990:8 1990-12-01 "Test Methods for Visual Display Units" pp. 1-56.

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