| 摘要 |
A switching arrangement for delivering power to an A. C. induction motor having a running winding and a start winding. A single-pole or double-pole, double-throw switch is provided for reversing current flow in the running winding is provided to reverse the rotational direction of the motor. A first four-position switch and a second four-position switch are operatively arranged to connect a first capacitor, a second capacitor and a resistor in three different circuit configurations with the windings across an A. C. power supply so as to provide three different rotational speeds under a given load. In a fourth position, the first and the second four-position switches effect a disconnection of the motor from the A. C. power supply.
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