Abstract: A charging system for charging plural batteries from a generating coil without requiring a separate isolator to protect the circuit in the event of battery failure. The circuit includes a rectifying diode circuit including a plurality of parallel diode paths between the ends of generating coil and the terminals of the battery. There are a number of diode circuits at least equal to the number of batteries.

Abstract: High-critical-temperature superconducting materials produce a magnetic field which acts as an electric field insulation, and as a substitute for dielectrics, so as to store high electrical voltage and high electrical energy, thereby eliminating the need of insulating dielectrics capacitors so as to make the energy source light and compact, and very suitable for storage of electrical energy, as a one-stage electron accelerator and/or for pulsed power applications.

Abstract: A jump starting system for use with the primary battery of a service vehicle is provided having an auxiliary two-volt battery which may be electrically connected in series with the primary battery or electrically connected to a battery charger which is adapted to charge at two volts. The system provides auxiliary power to start the engine of a disabled vehicle.

Abstract: An automatic discharging device is provided and consists of at least one light emitting diode and at least one resistor within at least one electrical wiring discharge circuit in a housing. An alligator clip is connected to each end of the at least one electrical wiring discharge circuit extending from the housing to connect to the terminals of a battery. The at least one light emitting diode will go out when the at least one resistor reaches its desired load indicating that the battery has reached its desired discharged state.

Abstract: The apparatus for charging a battery particularly for a motor vehicle, with a self-exciting generator is provided in which the generator pre-excitation is improved during starting in that an additional relay is triggered via the starter arrangement, which relay connects the battery with the exciting winding via an additional line when starting and improves the pre-excitation. The additional relay contains a delay circuit, so that the pre-excitation is improved via the additional line also some time after the starting process. The additional line or current branch can contain the relay switch of the additional relay, a resistor and a diode connected electrically in series and the battery is connected with the exciting winding of the generator by it when the additional relay is energized. A capacitor can be connected in parallel with the additional relay coil to provide an appropriate time delay.

Abstract: A discharging circuit can be made compact by forming a discharging path for the fuel cell via a fixed resistor. Even if the operation of a fuel cell is interrupted and/or a control power source for supplying electric power to a controlling circuit is interrupted, the discharging circuit is operated in response to a voltage produced through an electrolysis of the gas which is left in the fuel cell. As a result, the fuel cell can discharge, while the degradation of the fuel cell is prevented.

Abstract: An alternating current generator for vehicles in which the exciting current flowing in the field winding (2) is detected and the current thus detected is suppressed not to exceed the maximum exciting current under the hot condition by the field current limiting circuit (5) for aiming at eliminating the generation of the maximum output under the cold condition to reduce the size of a pulley to result in a reduced vehicle weight and preventing the variation of the maximum output characteristic under the hot condition.

Abstract: The problem of providing field power to a stationary main generator field winding (22) is addressed such that it can be used as a motor. A dynamoelectric machine (12) is operated as both a generator and a motor. An AC-AC exciter (14) is controlled by an exciter inverter (42) to operate as an exciter generator in a generate mode, and as a rotary transformer in a start mode. The exciter inverter (42) supplies low frequency power to an exciter field winding (28) in a generate mode of operation, and supplies high frequency AC power to the generator field winding (28) in the start mode of operation.

Abstract: An output circuit for a portable generator having a plurality of output windings provided separately from each other, and control winding provided separately from the output windings. A plurality of thyristor bridge circuits each having thyristors are connected respectively to the output windings. A superposing circuit superposes outputs from the thyristor bridge circuits one upon another to provide a first superposed output voltage. A rectifier circuit is connected to the control winding. The rectifier circuit is disposed such that its output voltage is superposed upon the first superposed output voltage to provide a second superposed output voltage. A control circuit is responsive to the second superposed output voltage for concurrently controlling voltages applied respectively to the gates of the thyristors of the thyristor bridge circuits to thereby maintain the first superposed output voltage at a constant value.

Abstract: A motor-driven alternator including an improved remote on/off switch closure detection system capable of detecting closure of solid-state switches. Such switches are typical of appliances, tools, or other electrical load devices. A sensing signal is provided by a higher voltage ac or pulsating dc signal for overcoming the forward breakdown voltage of semi-conductors typical of such switches. A detection circuit is included which comprises an opto-isolator circuit for isolation of the power and sensing circuits.

Abstract: A device for use in conjunction with a battery in a motor which is connected to an electrical load. The device includes a microprocessor which iteratively inputs the value of the battery voltage as well as the ambient temperature surrounding the battery. The microprocessor also sets a cut off voltage level which increases proportionately with elapsed time from the last system reset of the device and preferably adjusts the cut off voltage level as a function of the ambient temperature of the battery. The cut off voltage level is set so that when the battery reaches the cut off voltage, sufficient energy remains in the battery for engine ignition. The microprocessor then iteratively compares the battery voltage signal with the cut off voltage level and generates an output signal whenever the battery voltage is less than or equal to the cut off voltage level. The output signal initiates a timer which counts down a relatively short period of time, for example two minutes.

Abstract: The present invention relates to an electrical protective circuit, used when abnormality occurs, in a vibration suppressing apparatus which changes the load torque on a generator such as an alternator fixed on the engine to generate an angle moment on the generator body to cancel rough idling engine vibrations to suppress vehicle body vibrations due to the rough idling. In the inventive vibration suppressing apparatus, a generator is fixed on the engine which generator includes a voltage regulator to control a field winding current such that a fixed voltage is output to a battery. The generation of engine rough idling is detected on the basis of either a change in the engine speed or a change in the engine vibrations. If rough idling is detected, a high voltage circuit is connected to the field winding to increase the field winding current and hence the load torque on the generator.

Abstract: A generator unit for a motor vehicle includes a battery, a generator, an intermediate drive for transmitting a drive torque from the internal combustion engine to said generator, an on-board power supply system, and an evaluating circuit. At least one of input value of engine speed, generator voltage, generator speed, battery voltage, battery current, battery temperature, and consumer means voltage, and at least one of an input value of generator current and generator temperature is input to the evaluating circuit. At least one output value for controlling at least one of a transmission ratio of the intermediate drive and an exciter current of the generator is output from the evaluating circuit. The power supply system is divided into a plurality of parts. This division enables to conform allowable voltage variations in a single part of the power supply system, to requirements of structural components contained in the single part.

Abstract: An electro-mechanical power device, has a heavy fly-wheel and generator driven by a linear reciprocating magnetic core within an inductor assembly, pulsed electrically through a rechargeable battery supply, is intended for automotive vehicles and other uses, in which three (3) versions are described herein.

Abstract: When a motor/generator is changed over from a motor mode to a generator mode, field current is minimized. In the generator mode, idling is performed until the engine temperature attains a set temperature, after which the field current is supplied. As a result, load upon an engine is lightened immediately after the engine is started and the risk of the engine stalling is eliminated.

Abstract: A battery charger embodying a meter which states the time required to charge a battery and which times the battery charge.

Abstract: The invention provides an electric energy accumulator of capacitive type, with high capacity, characterized in that it comprises a plurality of electrochemical capacitors (C) connected in parallel and disposed inside the same case (B) comprising an overvoltage detection circuit (DS) and a circuit (CD) for controlling discharge of the capacitors into heat dissipation shunts (S) integrated in the case (B).

Abstract: Two SCR full-wave center-tapped rectifiers are connected in opposite polarity to battery charging terminals. The proper polarity rectifier is selected by a battery polarity sensing circuit that enables the firing of the SCRs of the proper rectifier. The sensing circuit has two transistors of opposite polarity. The transistor matching the polarity of the battery turns on and enables current to the proper SCR gates. The sensing circuit is controlled by an optical isolator that activates the circuit by shorting the polarized output of a diode bridge connected in the transistors's emitter circuit. This allows the optical isolator to control emitter current of either polarity.

Abstract: An electric power transmitting device transmits electric energy from one coil to another coil through an inductive coupling therebetween. One of the coils has an end bent in the axial direction of the coil. When the other coil is to be inserted into said one coil, it can be inserted in not only the axial direction of said one coil, but also a direction transverse to the axial direction through the bent end of the coil. Said one of the coils is typically housed in a holder, and the other coil in the grip of a gun-shaped, hand-held bar-code scanner. When the grip is inserted into a groove defined in the holder, the coils are magnetically coupled to each other, thus providing an inductive coupling. The bar-code scanner can easily be placed on and removed from the holder.

Abstract: An excitation system for a brushless generator having a main generator portion including a field winding disposed on a rotor and an armature winding disposed in a stator includes an exciter portion having a set of polyphase exciter field windings disposed in the stator and an armature winding disposed on the rotor and coupled to the main generator portion field winding. A first power converter is coupled to the main generator armature winding and a second power converter is coupled to the set of polyphase exciter field windings. Contactors are operable in a starting mode of operation to couple a source of electrical power to the first and second power converters and are operable in a generating mode to disconnect the source of electrical power from the first and second power converters.