| 摘要 |
A motor control device for controlling the speed of an electric motor and including electrical resistor means formed with a plurality of portions disposed in heat exchange relationship with one another and flexible toward and away from one another to adjust the heat exchange rate therebetween, the electrical resistance of the portions being temperature responsive whereby current therethrough is responsive to the temperature thereof. Adjustment means is provided for moving the portions toward and away from one another to adjust the mutual proximity and consequent heat exchange rate therebetween so the electrical current therethrough can be correspondingly adjusted. Electrical circuit means is provided for connecting such resistance means with the motor circuitry.
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