Flyback transformer with high voltage variable resistor built th

Details Flyback transformer with high voltage variable resistor built th Flyback transformer with high voltage variable resistor built th

1983-09-19

1985-07-02

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

315411, 336 96, 363100, H02M 706

Patent

active

045272298

ABSTRACT:
A high voltage variable resistor section (8) for deriving the focusing voltage and screen is attached to an open portion formed on one surface of a first case (47) which receives primary and secondary windings (2, 3) included in a flyback transformer section (1). An insulating substrate (16) on which resistor elements (9-13) included in the high voltage variable resistor section are formed in housed in a second case (15). An opening is formed in one surface of the second insulating cases (15). With this opening communicating with the opening in the first insulating case, the two insulating cases are integrated. These insulating case define insulating case means, in which a high voltage capacitor (14) for compensating cathode ray tube capacity is housed. The high voltage capacitor is disposed between the secondary winding (3) and the resistor elements (9-13) in such a manner that the surfaces of the electrodes (38, 39) of the high voltage capacitor are opposed to the secondary winding (3) and the resistor elements (9-13). This arrangement prevents unnecessary radiation components due to ringing noise induced in the secondary winding from being transferred to the resistor elements and superposed on the focusing voltage.

REFERENCES:
patent: 4247889 (1981-01-01), Riechmann
patent: 4293903 (1981-10-01), Mochida et al.
patent: 4408176 (1983-10-01), Nakamura

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