Pincushion correction circuit

Details Pincushion correction circuit Pincushion correction circuit

1976-09-13

1978-05-09

Wilbur, Maynard R.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315408, H01J 2956

Patent

active

040889319

ABSTRACT:
A side pincushion correction circuit having an impedance circuit in series with the deflection coil. A controlled switch coupled in a branch of the impedance circuit is operated at times during the second half of the horizontal retrace interval which are progressively advanced during the first half of vertical interval and retarded during second half of vertical interval. Enhanced inside pincushion distortion correction is provided when the impedance circuit includes a capacitor coupled in series with the switch.

REFERENCES:
patent: 3946274 (1976-03-01), Dietz
patent: 3962602 (1976-06-01), Dietz

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