| 摘要 |
PURPOSE:To hold a synchronous phase even when a set signal is altered by adding by an adder the set signal and the outputs of a phase comparator and a monostable multivibrator, and operating a drive circuit by the output signal. CONSTITUTION:The output of a D/A converter which converts a frequency dividing ratio set signal into a voltage is input to an adder 7, which adds it with the outputs of a phase comparator 5 and a monostable multivibrator 6. A drive circuit 8 is operated by the output signal of the adder 7. The sum of the output voltages of the converter 11 and the multivibrator 6 becomes constant, and even if the set signal varies, the DC bias voltage at the adding point does not alter. |
