| 摘要 |
PROBLEM TO BE SOLVED: To provide a temperature compensation piezoelectric oscillator by which an unconventionally large variable range can be obtained and high temperature stability can be obtained by an oscillator having two or more load capacity variable functions by controlling a vibrator current. SOLUTION: This temperature compensation system is constituted by providing a quartz resonator 11 having a piezoelectric element excited by prescribed frequency, an oscillation circuit 12 having an amplifier for oscillation which is not illustrated, which excites the piezoelectric element by supplying a current to the piezoelectric element, a vibrator current control circuit 13 which controls the current of the quartz resonator 11, a compensation voltage generation circuit 15 which compensates temperature characteristics of the piezoelectric vibrator 11 and a variable capacity diode 17 for external variable which varies oscillation frequency of the oscillation circuit 12 from the external variable 16. In addition, the vibrator current control circuit 13 is constituted of a variable capacity diode 14 for vibrator current control and capacitors 1 to 3. COPYRIGHT: (C)2004,JPO
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