Abstract: A driver's seat sensor switch has contacts that are operable to generate a driver present signal in response to a driver's seat of a motor vehicle being occupied. A passenger's seat sensor switch has contacts that are operable to generate a passenger present signal in response to a passenger's seat of the vehicle being occupied. The driver present signal is applied to a driver seat belt switch that opens when the driver's seat belt is not properly fastened. When the driver's seat belt is not properly fastened, the driver present signal is applied through the seat belt switch to a light, whereby the driver present signal conditions illumination of the light as an indication that the driver's seat belt is not properly fastened. In a similar manner, an indication is provided when the passenger's seat belt is not properly fastened. The passenger present signal additionally conditions a passenger air bag for deployment in response to the vehicle being in an accident.

Abstract: Apparatus for controlling the rotational movement of a ladder or the like of mobile equipment having stabilizing outriggers when the ladder is rotated manually to the side of the mobile equipment which does not have the outrigger fully deployed. A two-part switch, arranged for one part to rotate relative to the other, develops various combinations of signals dependent upon the relative positions of the parts of the switch. A control circuit is arranged to recognize the positions of the switch parts and supplies control signals which allow the ladder to rotate at a particular rate and to a particular point as the operator is steering the ladder to the side of the mobile equipment at which the outrigger is not fully deployed.

Abstract: A method and an apparatus can determine the orders (z) of non-characteristic harmonic currents (Ih) of a second power supply grid, which is coupled to a first power supply grid using an HVDCT system. The apparatus and method also compensates for these non-characteristic harmonic currents (Ih), which are produced as a result of distortion (Uh) of the supply voltage (U1) which exists in the first grid because of a low-frequency harmonic and passes through the short coupling. The order (n) of the existing non-characteristic harmonics is determined by a voltage and/or current measurement of the voltage (U1) of the grid, from which order (n) the order (z) of the generated non-characteristic harmonics in the second grid is determined by a provided voltage-symmetry signal (SMG). This order (z) is supplied to filter logic of a compensation system. The energy quality is thus considerably improved, particularly in the case of grids which are not rigid.

Abstract: A remote switch includes a fluid-containing tube connected to a fluid-sensing switch. A hot wire sensor detects changes in flow through the conduit tube and is electrically connected to breaker switch circuitry. Because the switch is responsive to flow, rather than pressure, the operation of the switch will continue, even if the conduit becomes punctured, cut or damaged. The device is particularly useful as a means for actuating a safety switch to interrupt the electrical power in an emergency.

Abstract: A circuitry (1) for reducing the magnetic field from multi-phase power lines for high voltage alternating current is disclosed. One phase (R) is split into two branches (R1, R2) forming a closed loop along a line portion (L). The self-reactance of the loop is adjusted for minimal magnetic field generation in the vicinity of the power line by a coupling to a compensation device, in the form of a capacitor (12), in a separate circuit (11), via a transformer (2).

Abstract: An operation control device for use in an electric power supply system for supplying electric power from one electric power source to a plurality of electric power consuming systems, which can determine based on an outside signal whether or not the electric power consuming systems can proceed to operations includes an output electric power detecting unit for detecting electric power outputted by the electric power source; and a comparison control unit for comparing a detected value of the output electric power detecting unit with a preset reference value to output a comparison signal indicative of a result of the comparison as the outside signal to be supplied to the plural electric power consuming systems. The comparison signal indicating an inoperable state when the detected value exceeds the reference value, whereby the electric power consuming systems are permitted to proceed to steps of their operations or stand by.

Abstract: There is provided a distributor of an electric automobile in which the number of switch devices and opening and closing devices is reduced without a sacrifice of functions to thereby simplify and make small a structure. The distributor 10 includes contacts 12P and 12N for cutting off or connecting a driving circuit 68D of an air conditioner 68 and a DC-to-DC converter 66 from or to a main battery 64, electromagnetic coils 12RP and 12RN for opening and closing the contacts 12P and 12N, and a control terminal 12C for controlling the electromagnetic coils 12RP and 12RN.

Abstract: To provide a wireless vehicle control system having a compact receiver with small current consumption, a receiver includes a receiving circuit for receiving a modulated command signal from a transmitter, a demodulation circuit for demodulating and outputting the received command signal, and a power source control circuit for starting and stopping supply of power to the receiving circuit and the demodulation circuit. A control device in the system includes a CPU for issuing to the power source control circuit a signal instructing a start of supply of power, for subsequently discriminating the control signal received from the demodulation circuit and outputting a drive signal in accordance with a discrimination result thereof, and thereafter, for issuing to the power source control circuit a signal instructing a stop of supply of power; a drive circuit for receiving the drive signal and causing a door lock motor to be operated; and a power source supply circuit for constantly supplying power to the CPU.

Abstract: A high-voltage semiconductor driving circuit to be instantaneously operated for the duration of an arbitrary pulse width can be effectuated through an extremely simple circuit configuration.The circuit comprises a pulse transformer (2) which receives an input pulse signal and generates a pulse voltage, a diode (3) which conducts the pulse voltage to the capacitive gate electrode of the high-voltage semiconductor switching element (5), and another switching element (4) which is connected in parallel to the diode (3) and adapted to discharge, at the falling of the pulse voltage, the gate capacitance which has been charged at the rising of the pulse voltage.

Abstract: The electronic switching device serves to control the connection of a load to a voltage source by a switch which is controlled in a first operating mode directly by a binary signal furnished by a signal processing circuit and in a second operating mode inverted. The switching device has three terminals, of which the first permanently remains connected to a first terminal of the voltage source and to a first terminal of the load, whilst of the other two switching device terminals the one is connected to the second terminal of the voltage source and the other to the second terminal of the load. The switching device is configured so that it can be changed over from the one operating mode into the other by interchanging the connections between these two other switching device terminals and the second terminals of the voltage source and of the load, respectively.

Abstract: A method and apparatus for sequencing the operation of electronic circuits based upon the level of the voltage provided by an external power supply. One or more power supply sequencer circuits may be interposed between an external power supply and one or more electronic circuits. The power supply sequencer circuits comprise a transistor having its high current node coupled to an external power supply, its controlling node coupled to a voltage sequencing means such as a diode and a resistor, wherein the resistor is in turn coupled to the external power supply and the diode is coupled to the ground potential. The transistor has its controlled high current node coupled through a power input node to the power input for the electronic circuit to condition the voltage received thereby. The power input node is in turn coupled through a second resistor to ground potential.

Abstract: A control cabinet for distributing power to a plurality of automated independent and parallel operated loads. A plurality of control cabinets can be interfaced with control cable to be supervised by one main controller. The main controller distributes low voltage ac signals to each control cabinet, which transfers the low voltage signal into high voltage power distribution by a series of low and high voltage relays, thus eliminating the need for excess circuit boards and transformers normally associated with this task.

Abstract: Electronic load switch has an electronic power switch and a control circuit mounted on a hybrid ceramic. Plug lugs are soldered directly to the hybrid ceramic to form a motor-vehicle-typical plug contact element which is engagement compatible with standard plug-contact elements of electromechanical load switches. The electronic load switch of this invention can therefore, without further expense, replace previous electromechanical load switches.

Abstract: A first magnetic flux field is produced in the vicinity of a generally cylindrical pulse generating coil arrangement and a plasma is abruptly and radially displaced outwardly toward the coil arrangement, which in turn displaces the first magnetic flux field to a sufficient degree to enable it to cut across the output coil to generate an output pulse. Displacement of the plasma is effected by producing a second magnetic field transverse to the direction of the first magnetic field and to the direction of current within the plasma by means of a longitudinal, centrally positioned conductor coupled to a source of electrical power.

Abstract: A hybrid vehicle includes a power unit communicating power between a turbine alternator, flywheel and traction motor. The power unit stores DC power in capacitors and places the power on DC bus for use in driving the induction machines. Power transistors receive the DC power from the DC bus and are pulse width modulated to output a synthesized AC waveform at their output. A transistor connection assembly comprising the plurality of power transistor modules connected in a plane and each having contact pads formed thereon for providing an output signal. A cross tie member is connected to four of the contact pads providing a combined output signal at a center point. The cross tie member comprises a sheet of rigid conducting material with width substantially greater than thickness and including four symmetrical arms extending outward from the center point. The design provides equal distance conduction paths for equal current sharing.

Abstract: An electronic unit for a vehicle includes a control section for carrying out predetermined control management by detection signals transmitted through signal lines installed in the vehicle, a drive section for carrying out predetermined power management by control signals for said predetermined control management, which are outputted from the control section, a power branch circuit for separating one power generated from the drive section into three or more systems of power lines, and harness connecting connectors connected to terminals of the power branch circuit. Since the electronic unit per se has a "branch connecting" function of the wire harnesses, it does not require an exclusive junction box, so that the harness circuits can be simplified.

Abstract: The invention relates an energy supply network for a vehicle powered by a fuel cell or by a battery. The energy supply network according to the invention is configured as an IT-network in which the consuming devices linked with the load current circuit are electrically connected with the vehicle body by a low impedance. An insulation monitoring device which consists of a measuring-bridge balancing stage and a buffer amplifier stage is connected between the load current circuit and the vehicle body.

Abstract: The invention relates to a remote control device for mobile and stationary concrete pumps. The remote control device has a central control device to control groups and signalling units of the concrete pump and a remote control appliance connected to the central control device via a multicore remote control cable. The central control device has an emergency stop switch gear remote controlled by a mechanically actuatable emergency stop switch fitted in the remote control appliance, the power supply to which is taken via a forced first switch contact of the emergency stop switch and which triggers an emergency stop if the power supply fails. In order to ensure reliable emergency cut-off even in the event of a short circuit in the emergency stop system when the emergency stop switch is actuated, there is an overload fuse in the central control-side lead to the first switch contact designed as a break contact.

Abstract: An apparatus for supplying power to a peripheral device of a computer directly from the system power supply is disclosed. An expansion interface connector or a standard interface connector is used for providing power to the peripheral device. Either one or two electronic switching devices control the supply of power to the interface connector. A voltage output line, a control line and a ground line are connected to three pins of the interface connector. The peripheral device has a matched connector comprising three pins corresponding to the three pins of the interface connector. The peripheral device can be powered up and in operation when it is connected to the interface connector. A short protection mechanism is provided to avoid damaging the computer system when the peripheral device is not connected.

Abstract: An antitheft device is provided for a vehicle such as a tractor/trailer combination, with an engine operable to develop pneumatic pressure in a reservoir during operation of the engine, and a pneumatic conduit leading from the reservoir to an operational load, preferably a brake release mechanism. The antitheft device preferably has at least two controllable valve along the pneumatic conduit, each with at least two positions including a first position at which the pneumatic conduit is open through the valve from the reservoir to the operational load, and a second position at which the fluid conduit is closed between the reservoir and the load by the valve means to disable the operational load. Air pressure is diverted at the valve to a branch coupling the reservoir through to an alarm such as an air horn. The antitheft device can be included in a tractor or a trailer, and preferably valves and alarms are provided in both.