Vdo Adolf Schindling Ag

Siemens Aktiengesellschaft

Other

Mercedes-benz Aktiengesellschaft

Mannesmann Vdo Ag

Telefunken Electronic Gmbh

Quarz-zeit Ag

Dieter K Busch

Reinhold Berberich

Manfred Stein

Albert Zintler

Friedrich Harless

Heinz Leiber

Roland Sudler

Horst Ullrich

Juergen Wagner

Gerhard Krauss

Armin Egger

Reinfried Grimmel

Rainer Kohr

Thomas Hennig

Heinrich Lysen

Fritz Stork

Fritz Sondermann

Hans Hopper

Horst Ruckdeschel

Wilhelm Pfander

Karl Wagner

David Foley

Wolfgang Schuller

An electrical circuit includes a multilayer printed circuit board and a housing which shields against electromagnetic interference. A portion of at least one outer layer of the printed circuit board are in the form of contact areas which are connected to a respective conductor area on a further layer of the printed circuit board. The conductor area occupies an area region that is offset with respect to the contact area and forms a bushing capacitor with a ground area of the outer layer.

Electrical circuit having a multilayer printed circuit board

An electronic device includes a first module, which is protected against electromagnetic interference, and a second module. At least the first module has multilayer printed circuit boards with at least one inner layer with conductor tracks. The at least one inner layer forms flexible connections between the printed circuit boards of the first and second modules. The at least one inner layer forms a bushing capacitor together with other conductor tracks of the first module.

Electronic device

A suppression device for an electronic appliance having a plug-in device which has at least one plug-in element and is designed for attachment to a housing of the electronic appliance, with a capacitor having at least two capacitor plates being provided in order to improve the electromagnetic sensitivity. In a simple and low-cost suppression measure for electronic appliances, which is also suitable for mass production, the capacitor is arranged outside the housing of the electronic appliance and is electrically connected firstly to a plug-in element of the plug-in device and secondly to the potential of the electrically conductive housing.

Interference suppressor

The security to prevent theft of a central locking system for motor vehicles is improved by arranging a switch which can be switched by a coded signal, in the supply voltage lines and/or and/or for driving an-actuating element.

Electronic central locking system

An electric center for motor vehicles has an electric part by which different electric power levels are connected to each other. The electric center is arranged on an insulating part holder, and connectors of the electric part engage into the insulating part holder. In order to assure a compact electric center for motor vehicles which is insensitive to disturbance, at least one connector of the electric part which is acted on with a higher power is contacted by a current feed on the side of the part holder facing away from the part holder. At least one low-load connector of the electronic component is connected with a holder member bearing electronic components, the holder member being physically separated from the insulating part holder.

Electric center for motor vehicles

Process and device for determining the center-line of a curvature

In a wetness sensor for a window of a motor vehicle, a heating resistor arranged in the window and powered by DC current can be connected to a measuring device for measuring an AC impedance of the heating resistor, in particular the capacitive portion thereof. The impedance varies with the amount of wetness and, thereby, serves as a measure of the wetness. A capacitor is used to bring the sensor near resonance for improved sensitivity.

Wetness sensor for a window of a motor vehicle

A device for the electric contacting of a sensor present on the outer side of the window of a motor vehicle, which sensor has an electric conductive track which is connected to an electric connecting contact within the motor vehicles. In order to produce a device for the corrosion-free, water-tight electric contacting of a moisture sensor present on the outer side of the motor vehicle, a conductive track arranged on a flexible support is arranged on the vehicle window, gripping around its edge region, the conductive track being conductively connected to the sensor conductive track in the region outside the vehicle and to a connecting contact in the region inside the vehicle.

Contact device for rain sensor of a vehicle

A system for controlling actuating members in the doors of motor vehicles has at least one electromotive actuating drive and at least one actuating element (switch, button) in the door of the motor vehicle, as well as a control unit located in the vehicle itself. The system employs only a two-wire connection between control unit and actuating drive. The control unit, in addition to an ordinary pole-reversing and evaluation circuit, furthermore contains a source of alternating voltage as well as means for connecting the alternating voltage and a decoder. At least two passive components (resistor, capacitor, coil) of different size are provided to be connected by the actuating element in parallel with the actuating drive into the two-wire connection.

Control of activators in motor vehicle doors

According to a remote control method, sound waves are output by a transmitter as short and long remote control pulses. These pulses are evaluated according to their duration. In order to largely avoid disturbances in the evaluation due to superimposition with reflected remote control signals, defined parameters, particularly at least one evaluation time of the remote control method, are adapted to variations in the duration of the remote control pulses output by the transmitter which are possible due to superimposition. Furthermore, a blanking is proposed which has a variable blanking duration that automatically adapts to a pause duration between two remote control pulses, which is varied due to a reflection.

Method and apparatus for the remote control of a hearing aid means

Device for determining and monitoring changes in the position of shafts

A hearing aid with wireless remote control of at least one of its controllable functions. The microphone of the hearing aird is used as a receiving element for the control signals. Energy (such as ultrasound) which the hearing aid microphone can transform into electrical signals which are separated from the other signals in a remote control part and caused to act upon the control members is used as a control signal transmission medium. Equipping a hearing aid with a remote control according to the invention is suited in particular for miniature hearing aids and for hearing aids insertable into the ear canal.

Remote control hearing aid

An electro-acoustical transmitter converts electrical signals which correspond to acoustical events into mechanical vibrations which are transmitted onto the skin. The aim is to achieve a small vibrator which, insofar as possible, can be worn on the wrist, for instance, in the manner of a wristwatch. To that end, a coil is employed into which a magnetic core, resiliently mounted relative thereto for instance by a diaphragm, projects as an armature. The housing which carries both the diaphragm and the coil forms the magnetic return flux path. Thus, a miniaturization of the vibrator on the desired order is achieved. An inventive vibrator is particularly suited for the deaf.

Tactile stimulation device for hearing-impaired individuals

A thermoelectric level detector employs an impedance element, at least a portion of which is meandering in configuration in which the resistive path repeatedly traverses the axis thereof, to detect the level of liquid in a tank. The impedance of the element depends on temperature and provides a measure of the liquid level. The pitch of the meander is relatively small in the reserve region of the tank to provide fine resolution in this region.

Thermoelectric level detector and a method for its manufacture

An electronic clock, particularly a quartz clock, with a timer signal transmitting stage, an indicator system which at least contains a minute counter and an hour counter, as well as a decoding stage and a digital indicator board, and an alarm system which at least contains a presettable counter associated with the minutes and a presettable counter associated with the hours, the outputs of which presettable counters are able to be locked on the indicator system, and a coincidence stage for comparison of the output signals of the counters of the indicator system with those of the alarm system. Each counter of the alarm system constitutes a forward-rearward-counter, and switches are provided for selection of the counting direction.

Growing community of inventors

Wollstadt, Germany

Dieter K Busch