Abstract: Rotor for an electric motor, having a rotor shaft and, mounted on the rotor shaft, a rotor core having a number of core laminations arranged along an axis of the rotor core. Each core lamination includes a central contoured aperture which is traversed by the rotor shaft and which includes at least two radially extending elevations and at least two cutouts positioned between the elevations, wherein, to form a press fit of the core laminations on the rotor shaft, a distance between the free ends of the elevations is less than a diameter of the rotor shaft, and wherein a duct extending peripherally on the rotor shaft is formed by the respective cutout in the successively arranged core laminations.

Abstract: An electric motor containing a board holder and an angle measuring unit with at least one Hall sensor for detecting a rotation angle and at least two hooks for receiving and holding a winding wire, wherein the angle measuring unit is designed to commutate the electric motor as a function of the detected rotation angle. The board holder contains a pot-like recess with an end face, wherein the recess and the angle measuring unit are designed such that, in an assembled state, the angle measuring unit bears against the end face of the recess such that the angle measuring unit is positioned in front of the at least two hooks in an arrow direction.

Abstract: Brushless electric motor for an electric handheld power tool, wherein the electric motor has an end plate and a Hall board which is arranged on the end plate, wherein the Hall board is axially fixed to the end plate by an elastic O-ring.

Abstract: An electric motor, in particular a motor which can be commutated electronically, is disclosed. The motor comprises a stator with a plurality of field windings which are wound at least in places from a winding wire, and further comprises a contact grid for making contact with the field windings, which contact grid has a plurality of conductor tracks which are insulated from one another, with the conductor tracks having contacts to which the winding wire is fixed, wherein the winding wire is cut through between specific contacts such that this results in the field windings being connected in a manner which is suitable for generating a rotating field when being powered by a suitable motor controller.

Abstract: A direct-current motor is disclosed, preferably in the form of an EC motor, which has a matching arrangement in order to vary its rotation-speed/torque characteristic, having a permanently effective control circuit for controlling the motor, which control circuit is programmed such that the rotation-speed/torque characteristic is permanently varied with respect to rated operation or operation with the matching arrangement.

Abstract: A series-wound DC motor is disclosed comprising a stator having at least two poles and an armature, each pole comprising at least one field winding which is connected in series with an armature winding, and further comprising at least one permanent magnet arranged on each pole, whose magnetic field is superimposed on the main field produced by the at least one field winding.

Abstract: An electric drive is disclosed, in particular for a power tool, including a rotor, a stator, and a first coil arrangement, which is designed to drive the rotor by a first rotating field, and including a first motor control arrangement, which is designed to supply the first coil arrangement with electric current in order to generate a first rotating field. The stator has a second coil arrangement for generating a second rotating field. The second coil arrangement can be actuated and energized separately from the first coil arrangement so as to actuate the second coil arrangement in an arbitrary commutation sequence.

Abstract: A control unit is disclosed for actuating an electric machine, having a first and a second voltage connection for connecting the control unit to a voltage source, a first control arrangement which is arranged between the voltage connections and is designed to electrically actuate a first electric consumer and to supply it with multi-phase current, wherein the first control arrangement has at least two electric connections for connection of the first electric consumer, wherein at least one second control arrangement is also connected in series with the first control arrangement between the voltage connections and is designed to electrically actuate a second electric consumer and to supply it with current.

Abstract: The invention relates to an electrical drive having a motor with a rotor and a stationary stator, which has a coil arrangement, and having a motor controller for controlling the motor, with the motor controller being configured to pass current through the coil arrangement in order to produce an excitation field, with the coil arrangement having a plurality of coil winding sections, and with each coil winding section having a plurality of coil sections, wherein the polarity of at least one coil section of the plurality of coil sections of each coil winding section can be selectively reversed with respect to the other coil sections of the coil winding section. The drive is particularly suitable for use for an electrical tool.

Abstract: A direct-current motor is disclosed, preferably in the form of an EC motor, which has a matching arrangement in order to vary its rotation-speed/torque characteristic, having a permanently effective control circuit for controlling the motor, which control circuit is programmed such that the rotation-speed/torque characteristic is permanently varied with respect to rated operation or operation with the matching arrangement.

Abstract: A series-wound DC motor is disclosed comprising a stator having at least two poles and an armature, each pole comprising at least one field winding which is connected in series with an armature winding, and further comprising at least one permanent magnet arranged on each pole, whose magnetic field is superimposed on the main field produced by the at least one field winding.

Abstract: The invention relates to an electrical drive having a motor with a rotor and a stationary stator, which has a coil arrangement, and having a motor controller for controlling the motor, with the motor controller being configured to pass current through the coil arrangement in order to produce an excitation field, with the coil arrangement having a plurality of coil winding sections, and with each coil winding section having a plurality of coil sections, wherein the polarity of at least one coil section of the plurality of coil sections of each coil winding section can be selectively reversed with respect to the other coil sections of the coil winding section. The drive is particularly suitable for use for an electrical tool.

Abstract: An electric motor, in particular a motor which can be commutated electronically, is disclosed. The motor comprises a stator with a plurality of field windings which are wound at least in places from a winding wire, and further comprises a contact grid for making contact with the field windings, which contact grid has a plurality of conductor tracks which are insulated from one another, with the conductor tracks having contacts to which the winding wire is fixed, wherein the winding wire is cut through between specific contacts such that this results in the field windings being connected in a manner which is suitable for generating a rotating field when being powered by a suitable motor controller.