| 摘要 |
PURPOSE:To save labor for check and adjustment by loading feedback to a phase shifter and automatically holding phase difference for a 1/4 period, namely, for pi/2. CONSTITUTION:For an integration circuit 3 and phase shifter 2, the phase difference of the pi/2 is applied between respective signals when a voltage corresponding to an integral constant is applied to the phase shifter 2 at the time of initial setting. At such a time, when the phase difference between the both signals is deviated from the pi/2, a direct current component corresponding to phase quantity deviated from the pi/2, namely, the phase difference to appear between respective output terminals 7 and 8 is automatically set to the pi/2 and even when fluctuation is generated, correction is automatically executed. Thus, the labor is saved for executing the check and adjustment. |
