| 摘要 |
PURPOSE:To stabilize a horizontal deflection current and a flyback pulse, by detecting the fluctuation in the deflection current of a horizontal deflection yoke, and controlling the switching period in response to the detected level. CONSTITUTION:The 1st and the 2nd saw tooth wave current generating circuit are connected in series, diodes 35, 44 are placed in the same polarity, a switching control element 31 interrupted during the flyback period and a capacitor 34 are connected in parallel with the series circuit of the saw tooth wave current generating circuits, and a DC power supply is applied to a terminal of the element 31. A detection circuit detecting a current or a flyback pulse of the 1st saw tooth wave generating circuit is provided and the conduction period of a switching control element 49 is controlled 51 in response to the detected output. |
