H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 29/98 (2006.01) H01J 29/00 (2006.01)
Patent
CA 2112307
ABSTRACT OF THE DISCLOSURE An electric field cancellation apparatus that can reduce electric field radiation from a cathode ray tube inexpensively includes a canceling pulse generating circuit generating a pulse voltage that cancels a leaked electric field radiated from a high voltage generating circuit employed with a deflection circuit or the like. The canceling pulse voltage is superimposed upon an output voltage of the high voltage generating circuit and is applied through an anode to an aperture grill of the cathode ray tube, whereby an electric field having a phase opposite to that of the leaked electric field is radiated from the whole surface of the aperture grill, so that the leaked electric field radiated from the cathode ray tube can be canceled.
Hoshino Kazuaki
Onodera Toshio
Gowling Lafleur Henderson Llp
Sony Corporation
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