Picture display device with interference suppression means

Details Picture display device with interference suppression means Picture display device with interference suppression means

1988-01-13

1990-08-07

Wieder, Kenneth

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Pulse storing

315 85, 335213, 335214, H01J 2906

Patent

active

049470833

ABSTRACT:
A picture display device having a display tube and a deflection unit comprising a field deflection coil and a line deflection coil is disclosed. To comply with a predetermined interference radiation standard, the picture display device is provided with one interference suppression coil or with a system of interference suppression coils, which interference supression coil or system of interference suppression coils is oriented and can be energized in such a manner that, measured at a predetermined distance from the picture display device, the strength of the local magnetic dipole field is below a desired standard.

REFERENCES:
patent: 2994803 (1961-08-01), Goldberg
patent: 3399325 (1968-08-01), Teodor et al.
patent: 3466499 (1969-09-01), Beth
patent: 3879633 (1975-04-01), Stark, Jr.
patent: 4634930 (1987-01-01), Toshiyasu et al.
patent: 4709220 (1987-11-01), Sakane et al.

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