| 摘要 |
PROBLEM TO BE SOLVED: To provide the luster center power source supply device of a video display equipment whereby a screen shift phenomenon on a cathode-ray tube owing to the unstable luster center power source by the the change of a horizontal frequency without using an individual transformer. SOLUTION: The luster center power source supply device adds coils L12 and L13 which are provided at the secondary side of a flyback transformer RBT 11 and supply a pulse voltage with pulse width corresponding to high pressure pulse width to a luster center control part 13 and first and second power source supply parts which are joined between the coils L12, L13 and the luster center control part 13, respectively execute rectifying and charging/ discharging processings in the pulse voltage which is induced by the coils L12 and L13 and supply positive and negative polarity voltages to the luster center control part 13. |
