Method of Operating and Cooling Device for the Motor of an Electric Tool

摘要

The method involves control electronics regulating the unloaded operating revolution rate to a value equal to a selected working revolution rate (n1). The motor is operated at a defined increased revolution rate (n2) for cooling if there is no load moment acting on the motor. The motor is changed over to the higher speed after a defined no-load period (deltaT). AN Independent claim is also included for the following: (a) an electric tool with control electronics for the motor revolution rate (b) and a method.