| 摘要 |
PURPOSE:To suppress a vibration level of a motor to a low one, by connecting bilateral thyristors respectively in series with n-main windings. CONSTITUTION:A bilateral thyristor 11 is connected in series with a closed circuit comprising a main winding 21, an auxiliary winding 31 and a capacitor 41. A bilateral thyristor 12 is connected in series with a closed circuit comprising a main winding 22, an auxiliary winding 32 and a capacitor 42. When the bilateral thyristors 11, 12 are conducted for every cycle or every half cycle, voltage is applied from an AC power source 5 onto at least one closed circuit thus controlling motor speed. |
