Braun Gmbh

Thomas Hohmann

Sebastian Hottenrott

Jan Christian Langsdorf

Philipp Jung

Joachim Lepper

Torsten Klemm

Lorraine Rispal

Lutz Ronald Herzberg

Ingo Vetter

Ferdinand Hermann

Holger Hild

Herbert Petzold

Tobias Schädel

Jörn Riemer

A circuit arrangement for protection against an undue overheating of a charging control, discharging control and/or a secondary battery is disclosed, the circuit arrangement comprising the secondary battery, the charging and/or discharging control for charging and/or discharging the secondary battery, a connector for connecting the charging and discharging control to an external power supply, at least one current limiting electronic component arranged in electrical connection to the charging and/or discharging control and optionally, a switchable load.

Circuit arrangement for protection against an undue overheating

An electrical circuit for charging a secondary battery that comprises a dc-converter and an output connector that can be connected to the positive terminal of the secondary battery for applying a charging current to the secondary battery. The dc-converter has a voltage feedback connector for sensing a feedback voltage, wherein the dc-converter is adapted to regulate the output voltage by adjusting the output current at the output connector depending on the sensed feedback voltage and a feedback-sub-circuit connected to the output connector and to the voltage feedback connector of the dc-converter.

Electrical circuit and method for charging a secondary battery

Implementations of a method for determining a degree of dirtiness of a cutting tool that is driven in a back and forth motion by an electric motor include evaluating a parameter that corresponds to the motion of the cutting tool and that is used for controlling the electric motor. The degree of dirtiness is determined based on the parameter.

Determining degree of dirtiness of electrically driven cutting tools

A circuit arrangement for the inductive transfer of energy is disclosed. The circuit arrangement includes an oscillator; and a device for detecting the load of the oscillator and for setting the circuit arrangement into one of multiple operating states depending on the detected load. The device determines the load of the oscillator using an electrical variable occurring in the oscillator.

Circuit arrangement for inductive energy transfer

A method and a circuit arrangement for the inductive transfer of energy with an oscillator and a device to detect the inductive load of the oscillator, and to modify a damping element in the oscillator depending on the load of said oscillator.

Circuit arrangement and method for inductive energy transfer

A circuit arrangement for the inductive transfer of energy is disclosed. The circuit arrangement includes an oscillator; a power supply for supplying the oscillator with energy and having a complex input resistance; and a device for detecting the inductive load of the oscillator and for modifying the complex input resistance of the power supply depending on the load of the oscillator.

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Gelnhausen, Germany

Thomas Hohmann