Abstract: An integrated circuit arrangement with a diode characteristic including a source-drain section of a first transistor arranged in the current path between the input and output sides of the arrangement; a first inverter stage with an output fed back to its input, and whose supply voltage is provided by the voltage on the output side of the circuit arrangement; a second inverter stage to the input of which the output signal from the first inverter stage is fed and whose supply voltage is provided by the voltage on the input side of the circuit arrangement; and a third inverter stage having an input to which the output signal from the second inverter stage is fed, whose voltage supply is provided by the voltage on the output side of the circuit arrangement, and whose output signal is fed to the gate electrode of the first transistor, and thus regulates the current flow in the current path of the circuit arrangement.

Abstract: A semiconductor functional device includes a semi-insulating semiconductor substrate; a resonant tunneling structure which includes, on the substrate, an n-type collector layer, an epitaxial multilayer structure including a double barrier structure constituted of a plurality of barrier layers holding a well layer therebetween, and an n-type emitter layer; an emitter electrode formed on the emitter layer; and a collector electrode formed on the collector layer. An undoped semiconductor barrier layer is interposed between the semi-insulating semiconductor substrate and the collector layer.

Abstract: A memory cell has two magnetoresistive memory elements, each with at least two ferromagnetic layers. The electrical resistance of each memory element differs depending on whether the ferromagnetic layers are magnetized in the parallel or antiparallel state. Binary information is stored in the memory cell by supplying currents that generate magnetic fields setting one memory element to the parallel state and the other memory element to the antiparallel state. Alternatively, ternary information is stored, two of the ternary values being stored in the same way as the binary values, and the third ternary value being stored by setting both memory elements to the same state. The stored values are read by comparing the resistances of the two memory elements.

Abstract: An engine starter includes an electric driving motor having a drive shaft; a transmission pinion coupled to the drive shaft; a starter pinion meshing with the transmission pinion; and a swiveling device mounted on the drive shaft for pivotal motion thereabout. The starter pinion is rotatably supported in the swiveling device. A friction clutch torque-transmittingly couples the drive shaft to the swiveling device for causing the swiveling device to pivot about the shaft for placing the starter pinion in a working position when the shaft is rotated in a driving direction. The engine starter further has an overrunning device for transmitting a driving torque between the drive shaft and the transmission pinion solely when the drive shaft rotates at least at the same speed as the transmission pinion.

Abstract: A synthesized oscillation circuit that can relax a limitation of the maximum operational frequency. A mixer (MX), a bandpass filter (BPF), an amplitude limiting amplifier (LIM), a phase detector (PD), a low-pass filter (LPF), and a voltage-controlled oscillator (VCO) are serially connected between a signal input terminal (IN) and a signal output terminal (OUT). The signal output terminal (OUT) is connected the mixer (MX) and the phase detector (PD). The bandpass filter (BPF) has a filtering characteristic which blocks the sum frequency component of the frequency component of an input signal from the signal input terminal (IN) to the mixer (MX) and the frequency component of an output signal from the voltage-controlled oscillator (VCO) to the mixer (MX), but which passes the difference frequency component between them.

Abstract: A hydromassage device for use in a bathtub includes a battery casing to hold electrical batteries, preferably chargeable batteries, which are connected to a drive motor for a pump, where a pump casing, a motor casing and a battery casing are connected to one another and at least one of the casings is equipped with a holding arrangement for attaching the device to the wall of the tub. The battery casing and the motor casing are separate, detachably connected waterproof casings, the battery casing and the motor casing having on their outer walls contact members forming contacts with each other when in the operating state the two casings are connected to each other, in each casing forming contact pairs, to which the batteries or the drive motor are connected. In the operating state, at least one sealing arrangement gives the region of the contact pairs a waterproof seal.

Abstract: Phthalonitrile, an alkali metal or an alkali metal compound, and a hydrogen donor compound are heated in an organic solvent to synthesize a partially hydrogenated alkali metal phthalocyanine, which is then brought into contact with a dealkalizing agent to effect substitution with hydrogen of the partially hydrogenated alkali metal phthalocyanine to thereby obtain high-purity metal-free phthalocyanine. FX-type metal-free phthalocyanine as obtained according to the foregoing procedure may be used as a charge-generating substance to produce an electrophotographic photoconductor of high image quality which is highly sensitive to near infrared rays.

Abstract: A device for protecting an optical component from a laser beam. The device includes a carrier which is light-pervious in a predetermined spectral range and is positionable in an expected path of a laser beam directed to the optical component; and a metal oxide film applied to the carrier. The film is light-pervious in the same spectral range and is oriented such as to intercept a laser beam directed to the optical component.

Abstract: A circuit arrangement, in particular for a wiper arrangement for motor vehicle windshields, having an electric wiper motor and a step-switching unit for the wiper motor that can be actuated via a control device, and wherein at least one output of the control device that is assigned to a specific wiper speed is connected to at least one input of the step-switching unit that determines this wiper speed.A switching means (18) is parallel-connected to the outputs (20, 24) of the control device (12), by way of which a voltage source (U.sub.bat) can be connected with the inputs (22, 26) of the step-switching unit (14), which are assigned to the outputs (20, 24) of the control device (12).

Abstract: Process for moulding a thermoplastic material by injection onto a rotating core, in which the relative rotation of the various parts of the mould takes place during at least a part of the dwell stage and ends before the end of this stage. This process, which yields good results with polyolefins, makes it possible to manufacture articles such as receptacles and cylinders, exhibiting good mechanical properties.

Abstract: A method for controlling the power supplied by a sinusoidal source (1) wherein the power supplied is determined, on the one hand, by the integer number of the pulses comprised in a burst which is fully switched through to the load (17) at the output of the circuit and, on the other hand, by the length of the last phase angle-controlled pulse within each burst. To provide the actuation signal for a switch which connects the sinusoidal pulses to the load, the zero passages of the sinusoidal pulses (A) of the sinusoidal source (1) are determined in a zero passage detector (5). A division circuit (7) generates trigger pulses (C) of a lower frequency from the zero passage pulses (B), which trigger pulses reset the ramp voltage (D) of a sawtooth generator (9). The ramp voltage (D) is compared in a comparator (15) to a regulated quantity (E) of a desired value device (11).

Abstract: A power supply for delivering voltage for use in an internal-combustion engine includes an onboard d.c. power source; an alternator connected to the d.c. power source and having an output for supplying a normal, onboard-network voltage during engine run; a step-up transformer having a primary winding and a secondary winding; and an inverter having an input connected to the d.c. power source and an output. There is further provided a change-over switch that has a first input connected to the output of the alternator, a second input connected to the output of the inverter and an output connected to the primary winding of the transformer. The change-over switch has a first switching state connecting the output of the alternator with the primary winding and a second switching state connecting the inverter with the primary winding. An rpm-responsive arrangement sets the change-over switch into the second switching state from the first switching state when the engine-rpm falls below a predetermined magnitude.

Abstract: A gas sensor includes a one-piece housing sleeve having a length dimension; an exhaust gas-side end and an opposite, exhaust gas-remote end, an inner space, an external thread, a terminal length portion which includes the exhaust gas-side end and which is exposable to an exhaust gas and a shoulder extending along an entire inner circumference of the housing sleeve at the terminal length portion thereof. A protecting sleeve which is disposed in the terminal length portion has a sealing collar seated on the shoulder of the housing sleeve. A ceramic supporting member is disposed in the inner space and has a throughgoing aperture parallel to the length dimension of the housing sleeve. The ceramic supporting member separates the inner space into a reference gas chamber and an exhaust gas chamber. The exhaust gas chamber is surrounded by the terminal length portion of the housing sleeve. A sensor element passes through and is fixedly held in the throughgoing aperture of the ceramic supporting member.

Abstract: In a mold closing unit for use in an injection molding machine for processing plastifiable materials comprising a first device for transfering a movable mold carrier and a second device for generating the closing force, the first device is supported at a first supporting element. The second device acts on the first device, the first supporting element and the movable mold carrier. As second device for generating the closing force an eccentric drive or a hydraulic drive unit is provided enabling a process for force control.

Abstract: An electron beam tube includes a unitary metal cylinder and a plurality of transverse walls located within it which define resonant cavities. As the cylinder is in one piece vacuum joints are only required at the ends of the structure. Drift spaces between the resonant cavities are enclosed within drift tubes which join two adjacent transverse walls. The inner diameter of the tube is stepped to facilitate assembly and accuracy of the structure. In use, an electron beam is generated and interacts with applied r.f. energy to produce amplification of an applied r.f. signal.

Abstract: A method of adjusting the position of rest of an armature of an electromagnetic actuator, reciprocated against the force of resetting springs by an alternating energization of two spaced electromagnets; the position of rest being assumed by the armature in the de-energized state of the two electromagnets. The method includes the steps of detecting and determining actual values of an impact indicator representing an impact behavior of the armature as the armature impacts on the pole face of the capturing electromagnet; comparing the actual values derived from both electromagnets with predetermined desired values to form deviation values between the actual and the desired values; and, if deviation values are present, shifting the position of rest of the armature by an adjusting device until the actual values derived from both electromagnets correspond to a predetermined desired value.

Abstract: A lattice matching device includes a substrate having thereon monocrystal regions having different lattice mismatches with respect to a LnBa.sub.2 Cu.sub.3 O.sub.x superconductor. A superconducting thin film is formed on the substrate, which film consists essentially of a superconductor of LnBa.sub.2 Cu.sub.3 O.sub.x wherein Ln represents yttrium or a lanthanide, and 6<x<7. The first and second superconducting thin film portions have different axes of orientation perpendicular to a main surface of the substrate, and arranged in contact with each other or at a distance which allows transmission of electron pairs from one to another.

Abstract: Process for converting a chlorinated alkane into at least one less chlorinated alkene by reaction with hydrogen in the presence of a catalyst comprising palladium and a metal selected from the group consisting of silver, gallium, indium, thallium, germanium, tin, lead, arsenic, antimony, bismuth and mixtures thereof.

Abstract: An apparatus for receiving and transporting flat articles respectively supplied by an overhead loader includes a conveying device comprising a first traction mechanism and transport containers attached to the first traction mechanism. The transport containers have intake openings facing in a direction of the overhead loader for receiving the flat articles from above the conveying device. A guide arrangement is disposed above the conveying device and includes an endlessly rotating second traction mechanism and a plurality of guide elements attached to the second traction mechanism. The guide elements move in the same direction as the conveying direction of the transport containers and approximately parallel to the intake openings of the transport containers. The guide elements are interspersed in the trajectory of the flat articles from the loader into the transport containers.