Gullwing distortion correction circuit

摘要

A gullwing distortion correction signal and a north-south pincushion distortion correction signal are generated and then summed to form a sum signal. The sum signal is coupled to a primary winding of a transformer. A secondary winding of the transformer is coupled in a current path of a vertical rate deflection current for modulating the deflection current in a manner that reduces the gullwing and north-south pincushion distortions. The secondary winding is included in a resonant circuit that is tuned to resonate at the horizontal frequency.