Sony Corporation

Hisashi Iwamoto

Junichi Ogawa

Seiji Kawaberi

Satoru Nakanishi

Kenji Ebe

Image rotation of a cathode ray tube caused by the influence of earth magnetism can be suppressed. An image rotation correcting coil for generating a magnetic field of the direction opposite to that of a horizontal earth magnetism component of the direction vertical to the picture tube is disposed between a deflection yoke formed at the outside of a tube envelope of a cathode ray tube and an anode button.

Cathode ray tube having a cancel coil for earth magnetism

A high voltage generator using a flyback transformer to generate high voltage pulses and including a control switching transistor inserted in a power supply circuit in a manner to be turned off during a trace interval. The amount of electric energy accumulated in a resonance circuit is intermittently controlled by the on-off action of such switching transistor, so that the level of the high pulse voltage outputted via the transformer can be maintained constant to consequently enhance the response characteristic in the voltage regulation while minimizing the number of required component elements.

Growing community of inventors

Kanagawa, Japan

Hisashi Iwamoto