bridge branch of the bridge circuit the windings are produced from enameled copper wire and rolled centrally to form a coil a thermal fuse 24 can be seen in fig2 in addition to encapsulated lead frame 20 and semiconductor elements 22 and capacitors 23 thermal fuse 24 protects electric motor 5 from overheating and the risk of fire if motor 5 overheats thus thermal fuse 24 is triggered and current can no longer flow to or from motor 5 terminals 25 26 and 27 form an input terminal and an output terminal for the motor current or two sensor signal outputs e g for measurements of the rotational speed number of revolutions the rotation direction and or the position of motor 5 as is evident relatively clearly from fig3 lead frame 28 which realizes the traces and which or the traces of which conduct the motor current is provided by a plastic encapsulation 29 and electrically insulated in the area of the thermal fuse removed here current path ends 30 31 can be seen which conduct the motor current and between which an interruption point 32 is formed in lead frame 28 current path ends 30 31 and interruption point 32 are located in guide slot 33 which is formed from plastic encapsulation 29 and which is configured in the shape of a circle segment at least.