Patent ID: 6160363
Filing Date: 2000-12-12
Classification: H01J

Abstract:
A color picture tube apparatus comprising:a color picture tube provided with an in-line electron gun at the neck thereof; anda deflection yoke used with said color picture tube and having a horizontal deflection coil for generating a horizontal deflection magnetic field distorted in a pincushion shape and a vertical deflection coil for generating a vertical deflection magnetic field distorted in a barrel shape,wherein said deflection yoke has a YH correction circuit connected to said vertical deflection coil in series, and said YH correction circuit has a double bridge circuit in which a diode bridge is connected to at least one resistor in parallel,and said double bridge circuit comprises two resistors which are connected in series, and which are connected to a variable resistor in parallel as a parallel connection, said parallel connection of said two resistors is further connected across the output terminals of said diode bridge circuit, andYH correction coils which are provided on the electron gun side of said deflection yoke, and which are connected between the connection point of said two resistors and the movable terminal of said variable resistor.