DEFLECTION CIRCUITS COUPLED VIA A FILTER

摘要

A secondary winding (LSEC) of a horizontal flyback transformer (IHVT) of a horizontal deflection circuit (20) develops a horizontal retrace pulse voltage (12). A secondary winding (43) of a second transformer (41) is coupled in series with a vertical deflection coil (LV) of a vertical deflection circuit (60). An R-C filter (40) is coupled between the secondary winding (LSEC) of a flyback transformer (IHVT) and a primary winding (42) of the second transformer (41). Horizontal parallelogram errors are corrected by a horizontal rate current (Icorr) injected in a current path of the vertical deflection coil (LV). The R-C filter (40) prevents the vertical deflection current from being parasitically coupled to the horizontal deflection circuit (20).