| 摘要 |
PURPOSE:To prevent distortion in a voltage of a horizontal deflection coil by using a conduction modulation type MOSFET as a switching element supplying a sawtooth current to the horizontal deflection coil and connecting an inductor in series with a damper diode. CONSTITUTION:A horizontal deflection coil 1, a tuning capacitor 2 connecting thereto, a damper diode 4 and a switching element are provided and a sawtooth current is supplied to the horizontal deflection coil by switching the switching element. A conduction modulation type MOSFET 5 is used as the switching element and an inductor 7 connects in series with the damper diode 4. Thus, the inductor 7 suppresses a rapid leading of a reverse recovery current and to form a smooth current form with a less peak and no voltage peak is caused in a collector-emitter voltage VCE. Thus, no distortion is caused in the voltage of the horizontal deflection coil. |
