| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a constant-temperature piezoelectric oscillator which maintains a constant temperature with small power.SOLUTION: A constant-temperature piezoelectric oscillator includes: a printed circuit board (141) on which a piezoelectric vibrator (130) which vibrates at a predetermined frequency and an oscillation element (134) for oscillation which oscillates the piezoelectric vibrator are mounted; a constant-temperature element (131) which maintains the piezoelectric vibrator at a predetermined temperature; a sphere or ellipsoid shaped first cover (110) composed of an upper lid cover (110a) and a lower lid cover (110b) which fits in the upper lid cover, the first cover (110) which covers the piezoelectric vibrator, the oscillation element, and the printed circuit board; and at least a pair of lead terminals (136) which establishes electrical continuity with the printed circuit board from the outer side of the first cover.</p> |
