| 摘要 |
PURPOSE:To obtain a given washing force independently of the frequency of a power supply. CONSTITUTION:The frequency of a power supply is detected by a frequency detecting device 30. When it is judged by a power-supply frequency judging means 34 that the frequency is 50Hz, a motor 8 (not shown) is intermittently driven by an ordinary driving means in accordance with a predetermined time- chart. When it is judged that the frequency is 60Hz, the stopping time of the motor 8 is lengthened by a revolution decreasing means 36 so as to be longer than that at 50Hz, and the motor 8 is intermittently driven. In the same operating time, the number of revolutions of the motor 8 becomes equal. |
