Most certainly a kind of motor is used where the initial internal position (and possibly the initial current) determines the direction. A similar thing used to be (long ago) a problem with tractors when the motor was idling: it could start moving backward when put into move, potentially injuring/killing the people accompanying it (usually walking behind). Best, jj * James Propp <jamespropp@gmail.com> [Jan 27. 2014 10:12]:
Why do microwave ovens alternate between rotating the food-carousel clockwise and rotating it counterclockwise (or, as the Brits would say, anticlockwise)?
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