| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vibrating gyro sensor having an enhanced detection sensitivity and realizing high S/N, a control circuit for the gyro-sensor, and an electronic apparatus having the vibrating gyro sensor mounted thereon. <P>SOLUTION: A bias voltage is applied between the detection electrodes of second and third piezoelectric elements 23b and 23c through resistances 25a and 25b. In this state, a drive signal can be applied between the drive electrode of a first piezoelectric element 23a and a commonly used electrode 4, which is disposed on a side opposite to the drive electrode. Thus, a vibrating element 21 operates, such that a drive signal corresponding to the bias voltage is applied between the commonly used electrode 4 and the detection electrodes of the second and third piezoelectric elements 23b and 23c. That is, the second and third piezoelectric elements 23b and 23c which are detecting pieces, also function as driving pieces. <P>COPYRIGHT: (C)2008,JPO&INPIT |
