Dynamotor

—A combination of dynamo and motor on the same shaft, one receiving current and the other delivering current, usually of different voltage, the motor being employed to drive the dynamo with a pre ure either higher or lower than that received at the moter terminals. In one form two armatures are mounted on one shaft in a single field or in separate fields; one is a motor armature driven by the original current; the other generates new current. This isa ““motor dynamo”, and it can transform continuous currents up or down. Another form of dynamotor is called the continuous alternating transformer. This is arranged so as to change a continuous into an alternating current or the reverse. A motor-dynamo, rotary converter, or continuous current transformer.