|5387856||Speed control arrangements for electric motors|
In a speed control arrangement for an induction motor or an a.c. permanent magnet motor in which any one of a number of power frequencies may be selected for application to the motor, there is provided circuitry to control the rate of change of frequency ...
A battery vehicle having a normal speed range for house to house deliveries and an extended speed range for lengthy journeys such as to and from delivery rounds. The extended speed range is engageable by operation of a manual range control. The manual ran...