218255 ⎘
Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
Closed control device for DC brush motor, control system, and control method
#2Arrangement and method for detecting an electrical line interruption during operation of a drive system
#3METHOD AND DEVICE TO REGULATE THE ELECTRIC MOTOR OF A HANDHELD POWER TOOL
#4FAN ROTATION SPEED CONTROL SYSTEM
#5METHOD FOR ASCERTAINING THE SPEED OF A STARTER
#6Magnetizing motor and magnetizing method thereof
#7Power window apparatus with function of pinching detection