NOISE CORRECTION CIRCUIT OF MIS-CONVERGENCE CORRECTION DEVICE OF DEFLECTION YOKE

摘要

PURPOSE: A noise correction circuit is provided to achieve improved reliability and quality by improving noises induced by the LC resonance frequency generated by the reactance component of tap coil and capacitor component of diode. CONSTITUTION: A noise correction circuit comprises first to sixth coma-free coils(51 to 56) electrically connected in serial to a vertical coil main unit(10); an YHC mis-convergence adjustment unit(20) connected in parallel to the first to fourth coma-free coils, and which adjusts mis-convergence of screen by controlling the relative amount of current flowing along the first to fourth coma-free coils; an YV mis-convergence adjustment unit(30) connected in parallel to the fifth and sixth coma-free coils, and which adjusts vertical mis-convergence of screen by controlling the relative amount of current flowing along the fifth and sixth coma-free coils; a first coil(71) and a second coil(72) forming a first diode(D1) and a second diode(D2), an YH variable resistance(40), a third resistance(R3) and a fourth resistance(R4), and a dual intermediate tap; and a noise suppression resistance connected in parallel to the first or second coil, and which suppresses generation of LC resonance frequency.