Vertical drive circuit for video display

摘要

Disclosed is a vertical drive circuit for a cathode ray tube in a video display in which sawtooth current waveform corrections for the deflection yoke are made by means of an S-correction feedback loop featuring DC-coupling and low frequency filtering. The amplified correction signal is transmitted to a push-pull type output stage for driving the deflection yoke. Power consumption is reduced and operation made more efficient by an approximate doubling of the retrace voltage applied to the push-pull output stage during retrace by means of a discharging capacitor network.