| 摘要 |
PURPOSE:To enable the large picture amplitude adjustment area of an image receiving tube to be obtained by controlling the change of the secondary pulse of a horizontal output transformer as the result of horizontal amplitude adjustment. CONSTITUTION:The second transformer 10 is added to a circuit. Pulse voltage Vpa generating at the both ends of a horizontal amplitude adjustment coil 5 is added to the primary coil 10a of the transformer 10 and the secondary coil 10b of it is inserted between a DC power source Eb and the primary coil 7a of the horizontal output transformer 7. Then, at that time, the polarity of the transformer 10 is fixed so that the pulse of which polarity is inverse to that of a collector pulse Vp at the connection point with the coil 7a. Therefore, the change of the peak value of the pulse generated to the coil 7b of the transformer 7 as the result of the horizontal amplitude adjustment can be controlled. Thus, the large picture amplitude adjustment area of the image receiving tube can be obtained. |
