The present invention is a motor (2), it relates in particular control apparatus for a brushless DC motor. Control device of the present invention, a motor bridge circuit (6) forming a rotating magnetic field for (2) has a sensor device for detecting the position of the rotor of the motor (2), wherein the from the signal representing the rotor position, the drive control signal for the bridge circuit is derived. The sensor device includes absolute value transmitter to detect the absolute position of the rotor and (3), to derive at least one of the increment signal (sH1, sH2, sH3) from the absolute position, rotation of the motor (2) the bridge circuit drive control unit for driving and controlling (6) to (5) so as to directly supply, the absolute value transmitter for the flow is constructed.