| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piezoelectric oscillation circuit and a constant temperature piezoelectric oscillator that can stabilize an oscillation frequency by suppressing variations in interterminal potential of a vibrator even when a fixed potential varies. <P>SOLUTION: The piezoelectric oscillation circuit includes: a Colpitts oscillator circuit 30; a first circuit section 20 comprising a circuit including a variable capacity capacitor for controlling an oscillation frequency; a second circuit section 50 comprising a circuit including a resistor; and a piezoelectric vibrator 40 having a first terminal 41 connected to the first circuit section and the second circuit section and a second terminal 42 connected to the Colpitts oscillator circuit. The Colpitts oscillator circuit 30 connects the second terminal 42 to a fixed potential via a dividing resistor, and the second circuit section 50 connects the first terminal 41 to the fixed potential via the resistor. <P>COPYRIGHT: (C)2012,JPO&INPIT |
