| 摘要 |
PURPOSE:To prevent completely parasitic oscillation by inserting a resistor between an output terminal of an inverter circuit and one terminal of a parallel circuit comprising a resistor and a piezoelectric vibrator. CONSTITUTION:The parallel circuit comprising a resistor R and the piezoelectric vibrator 2 is connected to the input terminal of the inverter circuit 1, a resistor R1 is connected beween the other terminal of the parallel circuit and the output terminal of the circuit 1, the vibrator 2 is grounded via capacitors C1, C2 so as to constitute a clock oscillator. The parasitic oscillation is prevented completely even with the characteristic variation of the circuit 1 and the vibrator 2 by constituting an LPF with the resistor R1 and the capacitor C2. |
