Resonant degaussing for a video display system

Details Resonant degaussing for a video display system Resonant degaussing for a video display system

1984-11-30

1987-01-13

Gellner, Michael L.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

H04N 929

Patent

active

046369112

ABSTRACT:
A resonant degaussing circuit for a video display apparatus permits frequent degaussing during operation of the display apparatus. In order to provide effective degaussing for large screen cathode ray tubes, an inductor is connected in parallel with the degaussing coil. The inductor increases the degaussing resonant frequency so that a greater number of resonant cycles occur before the degaussing current decreases below a predetermined level.

REFERENCES:
patent: 3733524 (1973-05-01), Cooksey et al.
patent: 4445072 (1984-04-01), Fredres
patent: 4535270 (1985-08-01), Frantz et al.

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