| 摘要 |
PURPOSE:To improve ability in deflection by outputting inverted triangular waves from two operational amplifiers which input deflecting triangular waves, and applying those outputs to both terminals of a deflecting coil. CONSTITUTION:A deflecting triangular wave is inputted from a terminal 8 to the plus terminal 10 of an operational amplifier 5 through a capacitor C1, and its output is supplied to minus terminals of the operational amplifier 5 and an operational amplifier 6 through resistances R3 and R9 respectively. Further, the output side of the operational amplifier 5 is connected to the output side of the operational amplifier 6 through a deflecting coil L2 and resistances R1 and Rv, and further connected to the minus terminal 13 of the operational amplifier 6 through a resistance R8. Moreover, a reference voltage from a terminal 9 is applied to plus terminals 10 and 12 of the operational amplifiers 5 and 6. Voltages at the resistance R1 and Rv, on the other hand, are applied to the minus terminal 15 and plus terminal 14 of an operational amplifier 7, whose output is supplied to the minus terminal 11 of the operational amplifier 5. Consequently, an inversion output is generated across the deflecting coil and the amplitude of the deflecting current increases double. |
