| 摘要 |
PROBLEM TO BE SOLVED: To provide a potential sensor capable of miniaturizing a circuit board and easy to manufacture. SOLUTION: The cutout 15 of a tuning fork 10 is fitted to a circuit board 20 so that the circuit board 20 is orthogonal to the vibrating directions of the first leg 11 and second leg 12 of the tuning fork 10 and located on a plane passing between the first leg 11 and the second leg 12. Circuit parts 30 are loaded on the surface and reverse side of the circuit board 20. In this potential sensor, since the circuit parts 30 can be loaded on the surface and reverse side of the circuit board 20, the mounting area can be increased. The positioning in the fixing of the turning fork to the circuit board can be precisely and easily performed by fitting the cutout provided on the support part of the tuning fork to the circuit board. |
