| 摘要 |
A detecting circuit (10) according to the present invention is for detecting output of a vibrating gyroscope (12) including a prism-shaped vibrator (1) and piezoelectric elements (16) formed on, at least, two side faces of the vibrator. The detecting circuit comprises an exciting signal generating circuit (38) for exciting the vibrator by inputting the signal to the two piezoelectric elements (16) of the vibrating gyroscope (12). The vibrating gyroscope bends and vibrates by the signal from the exciting signal generating circuit (38). A difference between outputs of the two piezoelectric elements (16a,16b) of the vibrating gyroscope is detected by a differential circuit (40). The output signal from the differential circuit is subjected to synchronous detection by a synchronous detecting circuit (62). Furthermore, when necessary, a phase adjusting circuit for adjusting phase of the output signal from the differential circuit is connected to the synchronous detecting circuit. <IMAGE>
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