| 摘要 |
PURPOSE:To reduce the size of an armature of the titled device by disposing part of a motor drive circuit including a Hall element in the space of the bore of each coil. CONSTITUTION:Part of a motor drive circuit which includes a Hall element H, power sources VC, VB is disposed in the space of the bores of armature coils U1, U2, V1, V2. The power sources VC, VS are commonly supplied to all the coil cores via conductor pattern designated by solid lines in the drawings. A control signal VI is also supplied to the all coil cores, and when the prescribed gains are equal for all coil cores, the voltage of the same peak is applied to the all coils. Thus, the motor drive circuit can remarkably improve the space factor of the motor contained in the space which is not heretofore used together with the Hall element. |
