Wide-Angle Color Crt Deflection for Horizontal Linearity Correction

The horizontal deflection yoke current for TV displays tends to be nonlinear and normally requires correction. The correction voltage is required to vary abruptly just before the start of trace and thendecline during approximately the first one-third of trace. In the system discussed in this paper, the linearity correction voltage is superimposed on a capacitor. In order to conserve power, a feedback circuit makes this capacitor charging current flow back into the power source rather than being dissipated.