| 摘要 |
A motor arranged directly to drive a gramophone turntable which comprises a number of permanent magnet rotor pole pairs arranged on the circumference of a circle centered at the motor shaft, a number of air cored stator windings there being less stator windings than rotor pole pairs, and a commutator arrangement for controlling current through the windings whereby they react with the rotor poles to produce rotation of the turntable the current being controlled so that torque ripple is obviated. |
