Top-bottom pin-cushion correction circuit

Details Top-bottom pin-cushion correction circuit Top-bottom pin-cushion correction circuit

1975-10-14

1976-09-21

Wilbur, Maynard R.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315371, H01J 2970, H01J 2976

Patent

active

039821560

ABSTRACT:
In a cathode ray tube scanning system having a deflection yoke with horizontal and vertical deflection windings coupled to deflection current sources having horizontal and vertical scan rates, a top-bottom pin-cushion correction circuit includes a saturable reactor having a control winding coupled by a unidirectional conduction device to a flyback pulse signal source with a resonating capacitor coupling the unidirectional conduction device and control winding to a potential reference level and an output winding coupled to the current source at the vertical scan rate and shunted by a tuning means including a capacitor.

REFERENCES:
patent: 3408535 (1968-10-01), Lemke
patent: 3825793 (1974-07-01), Dietz

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