Circuit arrangement for supplying a sawtooth deflection current

Details Circuit arrangement for supplying a sawtooth deflection current Circuit arrangement for supplying a sawtooth deflection current

1974-07-24

1976-11-09

Farley, Richard A.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315389, H01J 2972

Patent

active

039913457

ABSTRACT:
A television field deflection circuit with a rapidly controllable large linearity. The deflection current is integrated in a first integrator which is followed by a second integrator having an adjustable time constant. The signals integrated once and twice are applied to a difference amplifier, while the signal integrated once is inverted and is adjustable through a feedback circuit. Subsequently a signal combination is formed of a non-integrated signal, a signal integrated once in phase, an adjustable signal integrated once in opposite phase and an adjustable signal integrated twice. The signal combination is fed back to a difference amplifier through which the deflection coil is fed and to which furthermore a sawtooth-shaped signal with a parabolic component is applied.

REFERENCES:
patent: 3735192 (1973-05-01), Avery
patent: 3842311 (1974-10-01), Knox

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