| 摘要 |
PURPOSE:To correct intermediate pin distortion. CONSTITUTION:A first resonance circuit is composed of a horizontal deflecting coil 7 and capacitors 25, 81 and 24, and a second resonance circuit is composed of a second-order coil 61 of a transformer 2, coil 63 and capacitors 81, 74. Both resonance currents flow to the capacitor 81. The first and second resonance circuits are respectively switched by an NPN transistor 22 and an FET 73. The switching of the transistor 22 is controlled only in the horizontal deflecting cycle, and the switching of the FET 73 is controlled corresponding to not only the horizontal deflecting cycle but also the vertical deflecting cycle. |
