| 摘要 |
The drive has a magnetic sensor (23) for detecting alternating field of rotary magnetic wheel mechanically and electrically connected with a circuit board (13), where a bearing bracket is electrically conductive. The sensor is held in a recess of the circuit board, where the circuit board has conducting paths on both sides. A ground wire path (27) faces the bearing bracket, and is mechanically fixed and electrically in direct contact with the bracket. |
