| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a brushless motor used as a main motor for simultaneously driving various mechanism such as a copier, a laser beam printer overcoming an interference between a position detecting element and a FG pattern, thinned, having a reduced diameter, saving a space, and having a high-output drive/control circuit integrally built in the motor. <P>SOLUTION: The circuit built-in brushless motor with a core is provided with a pattern system FG and hall elements 46U, 46V, 46W disposed on a face 41b opposite to a face 41a on which the FG pattern 42 and the noise canceling pattern 43 of a circuit board 41 are formed, and has the uniform FG pattern formed on the entire circumference. The brushless motor has high rotational accuracy and the reduced diameter excellent in a noise resistance, saves the space, and is integrated into the drive/control circuit suitable for increasing an output. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
