| 摘要 |
PURPOSE:To simplify the constitution and to make the size small by providing a pedestal voltage control circuit comprising a pedestal voltage control transistor(TR), an inverting amplifier, a +B voltage division detection resistor or the like. CONSTITUTION:When a drop of a power supply voltage +B is detected by split resistors 21,22 of a pedestal voltage control circuit, a pedestal voltage Vc of an S-shaped correction capacitor 8 rises via an inverting amplifier 13 and pedestal voltage control TRs 14, 15, the amplitude of a parabolic voltage of the capacitor 8 is decreased and optimum S-shaped correction is applied with respect to the horizontal deflection frequency. Thus, it is not required to provide number of Sshaped correction capacitors in response to the number of the horizontal deflection frequency and the constitution of the horizontal deflection circuit is simplified and made small. |
