Electric surgical instrument system that has a handpiece with a variable speed motor and can adjust the current consumption of the handpiece motor according to the handpiece speed
A surgical handpiece, said surgical handpiece including: a housing; a electrical power consuming unit located within said housing, said power consuming unit being configured to receive a select set of energization signals; a surgical attachment designed for application to surgical site that is connected to said power consuming unit for actuation by said power consuming unit; and a non volatile memory contained within said housing, said memory having therein data representative of the characteristics of said energization signals that can be received by said power consuming unit.