| 摘要 |
PURPOSE:To decrease the IC value and to improve the workability of an oscillator excellent in vibration-resistance, by forming the oscillation and support sections of a coupled crystal oscillator incorporatedly, and arranging an exciting electrode of the oscillator on the entire upper and lower surfaces of the oscillation section. CONSTITUTION:Two support sections 3 are formed incorporatedly at both sides of the oscillation section 2 of a crystal 1, and exciting electrodes 6, 7 are uniformly arranged on the upper and lower surfaces 4, 5 of the oscillation section 2. This oscillation electrode 6 is prolonged to the one support section 3, the electrode 7 is prolonged to the other support section 3, and an AC voltage is applied to the electrodes 6, 7 to excite the oscillator. The resonance frequency of the two modes is determined basing on the width W and the length L of the oscillator, and the resonance frequency of the main oscillation is determined width W and the resonance frequency of the sub-oscillation is determined basing on the length L. The IC value of the coupled crystal oscillator is reduced and the manufacture in the oscillator excellent in the vibration-resistance is made easy. |
