专利汇可以提供Piezoelectric oscillating element and piezoelectric oscillator using it专利检索,专利查询,专利分析的服务。并且PURPOSE: To reduce the number of components of an oscillation circuit by using a three-terminal type piezoelectric resonator with parts between split electrodes and common electrodes polarized in mutually-opposite directions.
CONSTITUTION: On the entire surface of piezoelectric ceramic board 11, common electrode 11a is formed and on the other, two split electrodes 11b and 11c separated by narrow-width beltlike gap 13 are formed. Further, a polarizing process is so performed that the polarization axis of the part between electrodes 11a and 11b will be different fom that of the part between electrodes 11a and 11c. Three-terminal type piezoelectric resonator X' formed in this way is equivalent to a feedback circuit composed of a two-terminal type piezoelectric resonator and capacitor, and consequently this resonator can be used easily for an oscillation circuit without rquiring a phase inverter circuit. Additionally, using an amplifier of high impedance makes it possible to omit an externally-attached capacitor.
COPYRIGHT: (C)1980,JPO&Japio,下面是Piezoelectric oscillating element and piezoelectric oscillator using it专利的具体信息内容。
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