Robert Boschgmbh

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Martin Frey

Thomas Fabry

Ingo Gorille

Ralf Schmid

Walter Zein

Richard Spitz

Hartmut Seiler

Friedhelm Meyer

Herbert Goebel

Anton Mindl

Holger Haussmann

Vesna Biallas

Markus Karl Vogel

Henning Stilke

Bernhard Woerner

Antoine Chabaud

Sven Finke

Siegfried Schuler

Ralf Kramp

Ulrich Schaefer

An electronically commutated electric motor includes a stator and a rotor formed as a permanent magnet. A control unit is connected to the stator and configured to energize the stator to produce a rotating magnetic field. The electric motor further includes at least one Hall sensor configured to detect at least a magnitude of a sensor magnetic field produced by a sensor magnet connected to the rotor. The electric motor also includes at least one magneto resistive sensor configured to detect an alignment of a total magnetic field during a rotor revolution of the rotor and to generate a rotor position signal representing this alignment. The total magnetic field includes the sensor magnetic field and an interference magnetic field superimposed thereon. The control unit is further configured to determine the rotor position of the rotor at least depending on the alignment of the total magnetic field.

Electronically commutated electric motor comprising rotor position detection with interference field compensation

An automotive headlight with a high-pressure gas discharge lamp arranged inside a reflector contains an electronic ballast in a housing for operation of the high-pressure gas discharge lamp. The housing dissipates heat generated by the electronic unit in particular and possibly also by the high-pressure gas discharge lamp and provides an electromagnetic shield against any resulting electronic radiation. Cooling ribs may be provided on the housing to aid in heat dissipation.

Motor vehicle headlight with high-pressure gas discharge lamp

A device for the electrical and mechanical connection of a first, preferably elastically flexible printed circuit board to a second printed circuit board wherein an electrically conductive contact pin, protruding from the second printed circuit board and projecting through an opening in the first printed circuit board, is electrically conductively connected to a conductor track of the first printed circuit board. The device further includes an electrically conductive clamping part with elastically flexible protrusions embodied on it that embrace the contact pin by nonpositive engagement, and a bearing region of the clamping part that is electrically connected to the protrusions is pressed in prestressed fashion against a conductor track disposed on the first printed circuit board.

Device for the electrical and mechanical connection of two printed circuit boards

In a conductive foil, for the conductive connection of electrical/electronic components, the foil including an elastically malleable, non-conductive carrier foil strip on which a plurality of printed circuit traces are arranged, insulated to the outside and running next to each other in the longitudinal direction of the carrier foil strip, in order to ensure that the conductive foil can be bent in a lasting two- or three-dimensional shape. The conductive foil is provided with at least one lastingly malleable shaping element that is insulated from the printed circuit traces and that runs in the longitudinal direction of the carrier foil strip.

Conductive foil

Discharge lamp with capacitive socket

A headlight for vehicles has a headlight housing, a light source arranged in the headlight housing, an electrical supply unit provided for the light source and arranged on the headlight housing, the headlight housing in the region of at least a part of the supply unit being provided with an opening, a metallic cooling body closing the opening of the headlight housing, and a cooling body being formed so that the at least a part of the supply unit is arranged inside the headlight housing on the cooling body.

Headlight for vehicle

A discharge lamp assembly has a discharge lamp, and an ignition device for the discharge lamp, the ignition device including at least one inductive component and at least one capacitive component, at least a part of one of the components being surrounded by at least a part of the other of the components, the ignition device further having a housing in which the components are arranged and which is connectable with the discharge lamp.

Ignition device for discharge lamp

A rectifier arrangement for a three-phase generator having at least one power diode allocated to each half-wave of each phase and a cooling arrangement for the power diodes. The power diodes may be designed as diode chips and be arranged between two diametrically opposed heat sinks, while being oriented with respect to polarity and electrically and/or thermally conductive.

Rectifier arrangement for a three-phase generator

Growing community of inventors

Lichtenstein, Germany

Martin Frey