COLOUR TELEVISION DISPLAY TUBE

摘要

In a colour television display tube, an air gapped permanent magnet ring is mounted on the electron gun in the tube neck and magnetized from outside the tube to provide a multipole magnetic field for correction of static misconvergence. The magnet material has average values of coercive field strength of 5 to 40 kA/m and average values of remanent induction of 500 to 1500 milli-telsa.