| Patent Number |
Title Of Patent |
Date Issued |
| RE32479 |
Feedback amplifier or threshold value switch for a current feed differential stage |
August 18, 1987 |
| A feedback amplifier which is constructed as a threshold value switch includes a current fed differential stage and additionally comprises two transistors whose emitters are each connected to one output of the differential stage with a first resistor connected between these two outpu |
| 5311398 |
Housing for motor vehicle electronic system |
May 10, 1994 |
| A housing for installation in motor vehicles to accommodate SMD electronic components disposed on one side of a multi-layer circuit board or film. A metal plate serves as the carrier for the circuit board or film, with the planar expanse of the metal plate being the same as or greater th |
| 5257288 |
Data transmission system |
October 26, 1993 |
| A data transmission system and method in which digitalized information is transmitted via a data transmission link in complete binary words from a transmitter to a receiver. For data transmission, a complete binary word with a defined total bit number is subdivided into one or more parti |
| 5250466 |
Method for manufacturing ohmic contacts for compound semiconductors |
October 5, 1993 |
| A method for manufacturing ohmic contacts on an n-doped semiconductor layer of a III-V compound semiconductor wherein initially an AuGe layer is formed on the n-type III-V compound semiconductor, with the thickness of the AuGe layer being between 5 and 50 nm and the germanium concentrati |
| 5245509 |
Printed circuit board arrangement with surface-mounted connector strip and a method for manufact |
September 14, 1993 |
| The invention relates to a printed circuit board disposed on a film serving as the carrier material. A connector strip having a large number of connection pins is disposed on the printed circuit board using surface-mounting technology. Connector strips of this type are widespread in |
| 5235288 |
Amplifier stage for low-resistance AC voltage sources |
August 10, 1993 |
| An amplifier stage for use with low-resistance AC voltage sources has first and second complimentary transistors, each having a control terminal, a current input terminal and a current output terminal. The transistors are connected together at a first junction point, a current terminal o |
| 5225669 |
Sensor system with adjustment for ambient conditions |
July 6, 1993 |
| A sensor system for recording the ambient conditions of an optical sensor having a transmitter unit and a receiver unit linked by an optical gap. An electronic sensor unit is provided that predetermines a basic setting of the optical sensor independent of the ambient conditions. The elec |
| 5220903 |
Electronic ignition system |
June 22, 1993 |
| An electronic ignition system having a control unit to preset the ignition times of the individual cylinders, an ignition coil, and an end stage with a switching transistor (T.sub.1) for exciting the ignition coil. The end stage is provided with a switching unit with which the sparking c |
| 5220607 |
Digital switching signal in stereo decoders and circuit array for generation thereof |
June 15, 1993 |
| In stereo receivers with digital decoding pulse generation, interference by the harmonics of the digital switching signal with signals in adjacent channels or with carrier signals in the sideband lead to faults that can be perceived in the audible range as chirping. An integrated stereo |
| 5208728 |
Housing for fitting in motor vehicles to hold electronic components |
May 4, 1993 |
| To make housings used in automotive engineering for holding electronic components suitable for engine compartment installation, complex measures are taken that involve high manufacturing costs. In accordance with the invention, a housing is provided that permits simple production at low |
| 5203019 |
Radio receiver with improved automatic gain control |
April 13, 1993 |
| In a radio receiver in accordance with the heterodyne principle or with the homodyne principle, two additional transmission channels are provided for interference suppression. The two additional transmission channels have a different degree of distortion. Either mixing with a heterodyne |
| 5202646 |
Output stage for amplifiers |
April 13, 1993 |
| An output stage for an amplifier includes first and second load current-carrying n-p-n output transistors disposed in different respective amplifier branches having different amplification properties. Negative feedback and limiting circuitry provides a negative feedback current to th |
| 5194922 |
Luminescent semiconductor element |
March 16, 1993 |
| Described is a luminescent semiconductor element having the following structure: a first thick connecting semiconductor layer of uniform material composition, a thin over-graded layer arranged on the first semiconductor layer and comprising connecting semiconductor material whose com |
| 5181084 |
Infrared light emitting diode with grading |
January 19, 1993 |
| The invention relates to a semiconductor arrangement used in particular for the manufacture of infrared-emitting diodes. A first Si-doped GaAlAs layer containing an n-conductivity zone and a p-conductivity zone is deposited onto an n-doped GaAs semiconductor substrate. The Al content dec |
| 5159532 |
Electronic control unit with multiple hybrid circuit assemblies integrated on a single common ce |
October 27, 1992 |
| The object of the patent application is an electronic control unit with triggering and power components, in particular an ignition control unit, whose electronic circuit comprises various assemblies in hybrid technology. To reduce the assembly expenditure and costs for manufacture, w |
| 5130526 |
Circuit array for optical Schmitt trigger |
July 14, 1992 |
| The invention relates to a circuit array for an optical Schmitt trigger in which an optical input signal is converted into an electrical output signal by means of a light-sensitive receiver element, an amplifier stage, a Schmitt trigger stage and an output stage.It is provided in accorda |
| 5124575 |
Circuit array for setting the operating point of a transistor |
June 23, 1992 |
| In a circuit array for setting the operating point of a first transistor. A current-inverting circuit (current mirror circuit) has a pinch resistor connected in series with the base-emitter path of another transistor within the current inverting circuit. The current inverting circuit |
| 5122878 |
Television tuner and circuitry for switching between two frequency ranges |
June 16, 1992 |
| An input circuit and a television tuner for at least two frequency bands. The television tuner has a joint pre-amplifier whose output is connected to two independent, switchable and tunable band-pass filter circuits for the two frequency bands, preferably extending from VHF band I up to |
| 5094983 |
Method for manufacture of an integrated MOS semiconductor array |
March 10, 1992 |
| A method of manufacture of an integrated MOS semiconductor array for the low-frequency range having MOS components and circuit paths arranged on a semiconductor substrate. Exposed surfaces between the circuit paths are made hydrophobic by germinating with hexamethyl disilazane ((CH.s |
| 5084804 |
Wide-area lamp |
January 28, 1992 |
| The invention relates to a wide-area lamp in which luminescent semiconductor elements in a wide-area spread are connected to one another by a conducting path structure and the individual luminescent semiconductor elements are surrounded by casing elements. The invention provides for |
| 5082339 |
Optical read-write head with diffraction grating structure |
January 21, 1992 |
| The invention relates to a holographic optical component and its use for reading the writing/reading heads. This application requires a minimum size and low weight for the holographic optical components. This is achieved in accordance with the invention by arranging a laser element and |
| 5075822 |
Housing for installation in motor vehicles |
December 24, 1991 |
| The invention relates to a housing for installation in motor vehicles to hold electronic components arranged on a PCB. In accordance with the invention, the housing comprises a trough-shaped housing section and a metal lid. In addition, several heat sinks are arranged on the PCB, with |
| 5067076 |
Circuit arrangement for serial data transfer |
November 19, 1991 |
| A circut arrangement for serial data transfer has a transmitting device with several bit-parallel input information units, a serial data transfer line and a receiving device via which the transferred data are correspondingly converted into bit-parallel output information units to dri |
| 5053923 |
Electronic control unit with common ground connection to a heat sink |
October 1, 1991 |
| The invention relates to an electronic control unit, in particular an ignition control unit, containing an electronic circuit in the form of a hybrid circuit arranged on a heat sink, and having a plastic housing element containing the plug terminal jack. There is an electrical connec |
| 5053352 |
Method of forming an integrated circuit with pn-junction capacitor |
October 1, 1991 |
| In a method of forming an integrated circuit array having a capacitance formed by a pn-junction and separated from other components by a pn-junction, semiconductor areas are provided which connect that zone of the two semiconductor zones forming the pn-junction of the capacitance tha |
| 5045481 |
Method of manufacturing a solar cell |
September 3, 1991 |
| The invention relates to a solar cell which consists of a doped semiconductor base body and metallic connection contacts on the front and rear sides. For interconnection with further solar cells to form solar modules in series or parallel connection, at least one of the connection co |
| 5036233 |
Integrated semiconductor circuit having a unidirectional semiconductor component for preventing |
July 30, 1991 |
| In digital circuit technology, bipolar transistors are advantageously used for switching thanks to their high mutual conductance. Since a transistor operated in the saturation state has a retarded switching behavior, saturation must be avoided for rapid switching processes.In Schottky di |
| 5025260 |
Measuring system |
June 18, 1991 |
| The invention relates to a measuring system having a measuring array comprising a transmission and reception section and an electronic evaluation unit. In accordance with the invention, the distance between a first point and a second point is determined by moving the measuring array |
| 4998094 |
Safeguard device |
March 5, 1991 |
| A safeguard device is provided with a high frequency sensor which triggers an alarm device after receiving high frequency energy. To prevent the alarm device being rendered ineffective by high frequency shielding of the safeguard device, a metal sensor is provided in addition which activ |
| 4996569 |
Integrated circuit |
February 26, 1991 |
| In an integrated circuit array having a capacitance formed by a pn-junction and separated from other components by a pn-junction, semiconductor areas are provided which connect that zone of the two semiconductor zones forming the pn-junction of the capacitance that extends deeper into th |
| 4984031 |
Integrated circuit arrangement |
January 8, 1991 |
| In an integrated circuit arrangement with a protective arrangement at least partially integrated into it and protecting the integrated circuit arrangement from high-energy electrical faults, the protective arrangement has an ohmic resistance in the form of one or more resistance areas th |
| 4978939 |
Settable resistor |
December 18, 1990 |
| A settable resistor has a resistance path array (4) to which is allocated a contact piece (9) which is guidable in the longitudinal direction (13) over the resistance path array and has an adjusting device for the position of the contact piece. In order not to restrict the free displ |
| 4975814 |
Wide-area lamp |
December 4, 1990 |
| The invention relates to a wide-area lamp and consists of a transparent mounting plate with conducting path structure on which a large number of luminescent semiconductor elements connected to the conducting path structure are mounted in a wide-area spread. Each semiconductor element is |
| 4974037 |
Semiconductor arrangement with depletion layer majority carrier barrier |
November 27, 1990 |
| The invention relates to a semiconductor arrangement consisting of a semiconductor substrate and arranged thereon a conductive semiconductor layer on which at least two ohmic connection electrodes are arranged in spaced lateral relationship to each other. The invention resides in sel |
| 4963947 |
Semiconductor array |
October 16, 1990 |
| The mean drift speed of charge carriers in a semiconductor element can be increased if this semiconductor element has narrow layers which are alternately n-doped and p-doped on their planes, with undoped semiconductor material between these layers. A structure of this type is however |
| 4962439 |
Squaring circuit |
October 9, 1990 |
| A squaring circuit and an i.sup.2 t circuit utilizing the squaring circuit. The squaring circuit comprises a voltage-controlled oscillator and a frequency/current converter which are connected to one another, with the input voltage signal being supplied to the voltage-controlled oscillat |
| 4956615 |
Input circuit for high-frequency amplifiers |
September 11, 1990 |
| In an input circuit for high-frequency amplifiers having four transistors of the same conductivity type, the emitters of the first and second transistors (T1, T2) are connected to a reference point (M). The base of the first transistor (T1) forms the input (A) of the circuit and the base |
| 4956305 |
Process for fabricating an integrated circuit |
September 11, 1990 |
| The invention relates to a pnp lateral transistor comprised of two regions of p-type conductivity which are incorporated into the surface of a semiconductor area of n-type conductivity and constitute the emitter and collector regions. The portion of the semiconductor area of n-type c |
| 4949146 |
Structured semiconductor body |
August 14, 1990 |
| A structured semiconductor body e.g., an integrated circuit or a transistor, based on an silicon substrate having barrier regions which contain polycrystalline silicon, preferably produced by a silicon MBE process. The barrier regions are required to delimit monocrystalline silicon s |
| 4942439 |
Light-emitting diode of GaAsP compound semiconductive material |
July 17, 1990 |
| To improve the external quantum efficiency of light-emitting diodes made from semiconductive material of III/V compounds with lattice constants heavily dependent on the respective material composition of the mixed crystal, for example in GaAsP light-emitting diodes, a thin surface layer |
| 4937534 |
Band-pass amplifier |
June 26, 1990 |
| In a band-pass amplifier having differential stage comprising two transistors fed from a joint current source, the collector of the first transistor is connected via a resistor to the base of a third transistor complementary to the first and second transistor, and the collector of the |
| 4931794 |
Optoelectronic keyboard |
June 5, 1990 |
| The invention relates to an optoelectronic keyboard comprising transmitting elements and receiving elements activated in multiplex operation, with the changes in the luminous flux caused by actuation of keys resulting in a signal which defines the actuated key. The invention resides in a |
| 4924276 |
Optoelectronic component |
May 8, 1990 |
| Optoelectronic components, in particular those comprising a line of luminescent diodes arranged in a row, are provided according to the prior art with contacts that have a number of disadvantages, some of which are that the light efficiency is relatively low and that irregularities in th |
| 4922310 |
Field-effect transistor |
May 1, 1990 |
| The invention relates to a field-effect transistor having a drain region, a source region and a gate electrode for influencing a channel area. The invention consists of arranging the source region and the gate electrode one above the other in a projection onto the channel plane such that |
| 4916716 |
Varactor diode |
April 10, 1990 |
| A varactor diode comprising a semiconductor element, with a pn-junction barrier layer or rectifying metal semiconductor junction on one outer face, an ohmic substrate contact on the opposite outer face and a glass casing in which the diode is hermetically sealed. |
| 4915743 |
Space solar cell |
April 10, 1990 |
| A space solar cell comprising a doped semiconductor basic element and metallic contacts on the front and rear, and a cover glass with contacts. To draw off the electrostatic charge generated on the surface of the cover glass of the solar cell, either a part of a connector contact hom |
| 4914402 |
Opto-electronic transimpedance amplifier |
April 3, 1990 |
| In an opto-electronic transimpedance amplifier for the amplification of optical signals supplied by a photovoltaic cell and having a transistor as amplifier, the load resistor of the amplifier transistor is a transistor and two ohmic resistors whose series connection is parallel to the |
| 4912538 |
Structured semiconductor body |
March 27, 1990 |
| A structured semiconductor body based on a Si substrate and having monocrystalline semiconductor regions and barrier regions which contain polycrystalline silicon which have preferably been produced in an Si-MBE process. The barrier regions are provided to delimit the monocrystalline |
| 4907292 |
Television tuner |
March 6, 1990 |
| A television tuner for three frequency ranges (I, II, III) comprises a common antenna connection (4) for corresponding input filter circuits. The input filter circuits (1, 2, 3) of the two higher frequency ranges can be connected to and disconnected from the antenna connection by means o |
| 4905307 |
Synchronous receiver with direct mixing |
February 27, 1990 |
| A synchyronous receiver with direct mixing comprising a phase detector and an amplitude demodulator is provided with a square-law envelope detector and means for making the envelope signal audible or visible for tuning purposes. |
