Patent ID: 6798162
Filing Date: 2004-09-28
Classification: H02M,H02P

Abstract:
A system for providing a variable output voltage to a DC brush motor comprising:a DC brush motor, a DC voltage source, a step-up, step-down DC/DC converter including a switch, the DC/DC converter being constructed and arranged to step-up and step-down voltage from the source to provide an output voltage to the motor between 0 and 42 volts, and a control unit constructed and arranged to receive an input signal and to control the switch based on the input signal to control the motor, wherein the voltage source is 12 volts and the motor is a 42 volt motor and the DC/DC converter is constructed and arranged to step-down voltage from the source to an output voltage of 0 to 12 volts and to step-up voltage from the source to an output voltage of 12-42 volts.