Method and arrangement for reducing electrical alternating field

Details Method and arrangement for reducing electrical alternating field Method and arrangement for reducing electrical alternating field

1994-01-31

1995-09-12

Pascal, Robert J.

Electric lamp and discharge devices: systems

With electromagnetic wave radiation preventing or shielding...

315 8, 361146, H01J 152

Patent

active

054499755

ABSTRACT:
The invention relates to a method and arrangement for reducing to a minimum the electrical alternating fields generated in the surroundings of a visual display unit (1). The visual display unit includes a voltage connected part (5), on which undesirable voltage variations occur. A smoothing high voltage capacitor (C3) of high capacitance is connected to the voltage connected part (5). Connected between the high voltage capacitor (C3) and earth is a compensating circuit (20) which functions as a negative capacitor whose capacitance is greater than the capacitance of the high voltage capacitor (C3) by a given factor.

REFERENCES:
patent: 5162706 (1992-11-01), Hsu
patent: 5218270 (1993-06-01), Haapakoski
patent: 5231332 (1993-07-01), Beaumont

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