Hitachi, Ltd.

Tadashi Nagasaki

Mitsuharu Akatsu

Shingo Tamura

Isamu Kimura

Mitsuo Ohtsu

Mitsuo Otsu

A high voltage generating apparatus suitable for a television receiver. A flyback transformer has a secondary winding divided into a plurality of parts by at least a diode and a primary winding connected to a variable voltage divider circuit for varying the primary-side flyback pulse voltage. The variable voltage divider circuit is connected to an end of a focus capacitor with the other end thereof connected to the cathode of the diode, so that a variable pulse voltage is applied to the focus capacitor to regulate the focus voltage.

High voltage generating apparatus

A high voltage generator suitable for use in a television receiver set wherein a frequency dependent attenuation circuit is connected to a primary winding of a flyback transformer which generates a high voltage to be supplied to a CRT whereby a regulation for a high voltage is improved.

High voltage generator

A high voltage rectifier arrangement for producing a D.C. high voltage necessary for the cathode-ray tube in a television receiver in which a voltage multiplier rectifier composed of a plurality of rectifiers and high voltage condensers is molded with a resin in an insulator case, the input terminal which is to be led out of the insulator case is fixed with a piece formed of a material having good adherence to the molding material, and the led out input terminal and the junction part of the led out input terminal and the lead wire of a flyback transformer are covered with an insulating rubber cap pressed around the piece.

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Yokohama, Japan

Tadashi Nagasaki