Robert Boschgmbh

Holger Haussmann

Henning Stilke

Holger Scholzen

Richard Spitz

Herbert Labitzke

Vesna Biallas

Siegfried Schuler

Karl-Otto Heinz

Martin Haupt

Klaus-Uwe Mittelstaedt

Alfred Goerlach

Friedhelm Meyer

Rainer Topp

Herbert Goebel

Anton Mindl

Horst Braun

Martin Frey

Peter Urbach

Arno Altpeter

Rolf Mayer

Thomas Bilsing

Manfred Roessler

Hermann Lehnertz

Walter Csicser

Dana Keppeler

Walter Csiscer

Hans-Heinrich Winkel

Ulrich Schaefer

Joerg Streller

Rainer Brachert

Godehard Schmitz

Thomas Richard

A diode system and a generator, uses Zener diodes. The diode system has AC voltage terminals and DC voltage terminals, in which the Zener diodes are operable in the forward direction to rectify an AC voltage present at the AC voltage terminals, in which a lower limit is provided for the Zener voltage of the Zener diodes, and in which the lower limit of the Zener voltage is provided so that it is lower than a preset lower DC voltage.

Diode system having zener diodes and a generator

The invention relates to an electrical machine, preferably an alternator ( ) for motor vehicles, comprising a rectifier assembly ( ) that is fixed to an end shield ( ) of the machine. Said rectifier assembly is cooled by a fan ( ) that operates in the end shield ( ), the diodes being positioned on a negative connecting plate ( ) and a positive connecting plate ( ) of the rectifier assembly ( ). The aim of the invention is to evacuate the dissipated heat from the rectifier assembly ( ) in an advantageous manner. To achieve this, the rectifier assembly is located in an opening in the front face ( ) of the end shield ( ) and is connected in an electrically and thermally conductive manner by one of its two connecting plates ( and ) to a cooling body ( ), which is connected to the exterior of the end shield ( ) and covers the opening ( ). The cooling air that is thus taken in by the fan ( ) first flows from the exterior across the cooling body ( ) in a radial manner towards the interior, entering the machine in the vicinity of the shaft through orifices ( ) in the end shield ( ) and from here, having reached the fan ( ), subsequently flows past the other connecting plate ( and ) in a radial manner towards the exterior.

Rectifier assembly having heat-dissipating structure for an alternator

The invention relates to an electrical fuse for rotary current generators, having a rectifier assembly ( ) for supplying a DC network, in particular in motor vehicles. To achieve simple, cost-effective and rapid-response fuse performance in the event of an overload, it is provided that a fuse element ( ) be disposed in a line strand, carrying all the generator current, between the rectifier assembly ( ) and a DC connection terminal ( ) of the generator.

Electrical fuse for rotary current generator with rectifier

The invention concerns a semiconductor power element (diode ) having a lead ( ) and a safety fuse ( ) situated in the main current path that blows when overheated, particularly for use in the electrical system of motor vehicles. In order to achieve a previously determined, purposeful disconnection of the endangered element in order to avoid consequential damages when semiconductor power elements become overloaded, it is proposed that a segment ( ) of the lead ( ) and/or its points of contact in the main current path of the semiconductor be designed as a safety fuse ( ) that blows when a specified, current-dependent temperature value is reached.

Semiconductor power component comprising a safety fuse

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

The rectifier arrangement, preferably for a three-phase generator for a motor vehicle, has at least one power diode of positive polarity and at least one power diode of negative polarity assigned to respective half waves of each phase of the three-phase current and a cooling arrangement for the power diodes, the power diodes of like polarity being arranged on respective heat sinks in an electrically and thermally conductive fashion, and the heat sinks being sandwiched together with at least one electrically insulating part (32) which contains the electrical conductors between the diodes and the three-phase winding. The electrically conductive connections of the power diodes (12, 14) of positive and negative polarity to the phases (U, V, W) of the three-phase generator extend within the electrically insulating part (32) so that electrical contact is made with the power diodes (12, 14) of positive and negative polarities in respective cavities (40, 44) in the insulating part (32) via in each case one spring element. A punched grid (34) for each of the phases (U, V, W) extends in the cavities and includes conductor tracks (50) and spring elements (48, 49) for making electrical contact between pairs of power diodes of opposite polarity and each phase.

Rectifier arrangement, especially for a three-phase generator for a

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