Robert Boschgmbh

Klaus Dengler

Jacek Wiszniewski

Ulrich Single

Roland Walter

Michael Maercker

Joachim Schadow

Juergen Wiker

Manfred Lutz

Thomas Schomisch

Bastian Kloer

Joern Stock

Alexander Osswald

Martin Schulz

Michael Habele

Matthias Tauber

Kamil Pogorzelski

Matthias Schneider

Daniel Rombach

Hans-Joachim Vogt

Peter Nadig

Philippe Van Den Bogaert

Csaba Kreiter

Tim Hartmann

Klaus Guenther

Friedbert Weller

Zoltan Cer

Frederic Hain

Martin Lohner

Michael Wismer

Ursula Schmid

Micha Klingler

Bastian KLÖR

The disclosure relates to a brake device for an electric motor, which has at least one armature winding and at least one field winding, comprising at least one open-loop and/or closed-loop control unit at least for open-loop control and/or closed-loop control of at least one electric current through the armature winding and/or through the field winding. According to the disclosure, in the event of short-circuit braking of the electric motor, the open-loop and/or control-loop unit is intended to reduce, at least temporarily, an electric armature current flowing through the armature winding.

Brake device

The disclosure relates to a system, comprising a vacuum apparatus having a vacuum apparatus housing and having at least one vacuum apparatus mains socket, the at least one vacuum apparatus mains socket being attached to the vacuum apparatus housing. According to the disclosure, the system additionally comprises a plug-in module, having a plug-in module communication unit, an electrical plug-in module mains plug unit, and a current control unit, which is designed to control an electrical current between the plug-in module and the vacuum apparatus.

Vacuum apparatus having a plug-in module

A method for operating a universal motor, comprising the following steps: &#x2014;establishing a synthetic variable from at least two physical operating parameters of the universal motor; and &#x2014;operating the universal motor using operating parameters of this type so that the synthetic variable remains at a substantially constant level or at least does not exceed a defined permissible upper limit.

Method for operating a universal motor

An electric motor includes a stator, and a rotor which has a rotor shaft. At least one rotor position magnet is disposed on the rotor shaft, and is configured to provide a magnetic signal that can be evaluated, upon a rotation of the rotor shaft, at least for the purpose of determining a respective rotor position of the rotor. At least one carrier is disposed in a rotationally fixed manner on the rotor shaft, and is connected to the at least one rotor position magnet. The carrier includes at least one opening configured to compensate imbalance of the rotor.

Electric motor having a stator and a rotor

The invention relates to a method for operating an electric motor () having a phase angle control with the following steps: Applying an AC voltage to a series connection of the electric motor () and a switching element (), particularly a triac, wherein the switching element () connects through by applying an ignition signal and suppresses the flow of a current if the amount of current falls below a holding current; determining the time of a zero crossing of a virtual motor current that would flow if the switching element () were connected through; and turning on the switching element () at an activation time that is dependant on the time of the zero crossing of the virtual motor current.

Method and device for operating an electric drive with the aid of a phase angle control

A portable power tool includes a tool housing, a motor unit located in the tool housing, and an electronic module located in the tool housing. The electronic module includes (i) an electronic module housing having at least one housing component, and (ii) at least one printed circuit board. The at least one printed circuit board is at least partially decoupled relative to the at least one housing component of the electronic module housing.

Electronic module

A charging device () includes a charging unit () and at least one interchangeable, rechargeable energy storage unit (), in particular an interchangeable battery (), of a power tool (). Each energy storage unit () has first contact means () for contacting the corresponding power tool () and additional contact elements () for contacting the charging unit () in such a way that the charging unit () is able to charge the energy storage unit () via the additional contact elements (), both when the unit is connected to the power tool () and when it is disconnected from the power tool ().

Charging device with an interchangeable battery for a power tool

The invention relates to a method and a circuit for regulating the speed of a commutator series-wound motor, especially a universal motor (), which is supplied with a current from an a.c. voltage source () by means of a semiconductor switching element () mounted in series with an armature winding () and a field winding () and controlled by a control unit () according to a nominal speed value. The control unit () receives, as input signals, signals corresponding to the total voltage drop (Umot) when the motor () is supplied with a current, and a substitute signal for the intensity of the motor current (I), corresponding to the voltage drop (Ua, Ufa) on the armature () alone or on the armature () and on a part () of the field winding (). The input signals of the control unit () are compared with motor-typical characteristic lines of the voltages on the excitation field () and/or on the armature, stored in the control unit, and control signals for the semiconductor switching element are formed from the deviations.

Method and circuit for regulating the speed of a commutator series-wound motor

An electric mains-connection device for an electric hand-held power tool equipped with an electric motor (M), in particular for an angle grinder, has mains-connection terminals for a mains-connection cable, and with an anti-interference capacitor; it is designed as a mains-connection module that can be actuated externally, includes mains terminals, houses the anti-interference capacitor, and out of which an electric cable extends, which serves to connect motor electronics and a motor switch in an interface-free manner. An electric device for an electric hand-held power tool equipped with an electric motor, in particular for an angle grinder, includes the electric mains-connection device.

Electric mains-connection device for an electric hand-held power tool

Growing community of inventors

Kornwestheim, Germany

Klaus Dengler