| 摘要 |
PURPOSE:To improve the temperature characteristic of an oscillator by providing a heating element comprising a resistance body in a package of the oscillator consisting of a piezoelectric element so as to keep the temperature to a constant value. CONSTITUTION:A strip type oscillating element 12 consists of a piezoelectric base 15, electrodes 16, 17 and conductor terminals 18, 19. Conductor patterns 12, 13 are provided on a ceramic base 13. Conductor terminals 18, 19 are bonded on the patterns 22, 23 by conductive adhesives 20, 21. A ceramic cap 14 is bonded onto the base 13 by an insulating sealing member 25 so as to cover the oscillating element 12. A resistance pattern (heating element) 24 is provided in the package covered with the cap 14. The heating element 24 is provided on the base 13 or the oscillating element 12. In using a linear resistive element as the element 24, the element forms a bridge together with a heat-sensing element so as to control a current. A nonlinear resistive element is used for the element 24 without modification. |
