| 摘要 |
PURPOSE:To apply a stable voltage to a focus circuit by connecting a voltage extracting section of a focus circuit at a position where regulation characteristic is made stable between a high voltage terminal and a low voltage terminal of a high voltage coil. CONSTITUTION:A multiple voltage circuit 17 amplifying a correction voltage and applying the voltage to a high voltage terminal of a high voltage coil 11 directly is interposed between a high voltage control means 16 and a high voltage terminal of a high voltage coil 11 being a component of a flyback transformer 2. Moreover, a voltage extract part of a focus circuit 9 is connected to a position where the regulation characteristic is made stable between the high voltage terminal and the low voltage terminal of the high voltage coil 11. Thus, stabilizing control of a high output voltage is implemented accurately and a designated focus adjustment voltage is extracted from the intermediate part of the high voltage coil 11. |
