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| Number | Title | Issue Date |
| 8026638 | System for multiple energy storage and management and method of making same A propulsion system comprising an electric drive, a DC link electrically coupled to the electric drive, and a first energy storage system electrically coupled to the electric drive, the first energy storage system comprising at least a high specific-power energy sto... | 09/27/2011 |
| 8013472 | Method for distributed power harvesting using DC power sources A system and method for combining power from DC power sources. Each power source is coupled to a converter. Each converter converts input power to output power by monitoring and maintaining the input power at a maximum power point. Substantially all input power is c... | 09/06/2011 |
| 7989982 | Transmitting apparatus of digital signals on a supply line of electronic devices and corresponding method A power converter having a noise component and a modulator configured to vary a frequency of the noise component of the power converter on the basis of a digital signal to be transmitted. ... | 08/02/2011 |
| 7839022 | Device for distributed maximum power tracking for solar arrays A system for providing power from solar cells where each cell or cell array is allowed to produce its maximum available power and converted by its own DC/DC converter. In one form the system includes: one or more solar generators, each of which has at least one sola... | 11/23/2010 |
| 7839023 | Methods and apparatus for three-phase inverter with reduced energy storage Methods and apparatus for a circuit including first and second energy sources, a rectifier coupled to the first and second energy sources, first and second energy storage devices coupled end-to-end across the positive and negative rails, and a single three-level inv... | 11/23/2010 |
| 7443054 | Environmentally hardened Ethernet switch A circuit for an Intelligent Electrical device (IED) is disclosed. Using this circuit, the IEDs can be used in harsh industrial environments, such as those present in power utility substations. The circuit may comprise a dual stage isolated power supply. The dual st... | 10/28/2008 |
| 7363175 | Query based electronic battery tester An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined base... | 04/22/2008 |
| 7332835 | Micro-electromechanical system based switching module serially stackable with other such modules to meet a voltage rating MEMS-based switching module, as may be electrically connected to other such modules in a series circuit, to achieve a desired voltage rating is provided. A switching array may be made up of a plurality of such switching modules (e.g., used as building blocks of the ... | 02/19/2008 |
| 7319304 | Shunt connection to a PCB of an energy management system employed in an automotive vehicle A method of coupling a shunt to a printed circuit board (PCB) of an energy management system is provided. The method includes coupling flexible electrical connectors to the shunt and soldering the flexible electrical connectors to connection points on the PCB of the... | 01/15/2008 |
| 7295936 | Electronic battery tester with relative test output An electronic battery tester for testing a storage battery determines a condition of the battery. The condition is a relative condition and is a function of a dynamic parameter of the battery and an empirical input variable. ... | 11/13/2007 |
| 7276814 | Environmentally hardened ethernet switch A device for hardening an Ethernet switch is disclosed. The device provides cooling for the switch, and, suppresses electrical transients and electromagnetic interference, which could affect the power supply, and data transmission of the Ethernet switch. Using this ... | 10/02/2007 |
| 7272023 | High efficiency power converter A power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier. First and second primary switches in ser... | 09/18/2007 |
| 7244036 | Vehicular lamp A vehicular lamp has light source units connected in parallel, an output controlling switch operable to intermittently carry an electric current by repeating on and off, an output coil operable to output electric power according to current flowing into said output c... | 07/17/2007 |
| 7246015 | Alternator tester An alternator tester is provided for testing an alternator of a vehicle while the alternator is coupled to the vehicle. A sensor is configured to couple to the vehicle and sense a signal related to operation of the alternator. A memory contains data related to opera... | 07/17/2007 |
| 7239530 | Apparatus for isolated switching power supply with coupled output inductors A multiphase DC-to-DC power converter has two or more sets of input switches, each set of input switches driving primary windings of an associated transformer. Each transformer has one or two secondary windings, the secondary windings feeding power through output sw... | 07/03/2007 |
| 7154276 | Method and apparatus for measuring a parameter of a vehicle electrical system An apparatus for measuring electrical parameters for an electrical system measures a first and second parameters of the electrical system between connections to the electrical system. A processor determines a third electrical parameter of the electrical system as a ... | 12/26/2006 |
| 7126341 | Automotive vehicle electrical system diagnostic device An automotive vehicle electrical system diagnostic apparatus includes first and second electrical connections configured to electrically couple to an electrical system of an automotive vehicle which includes a battery. Digital samples are obtained during operation o... | 10/24/2006 |
| 7119686 | Theft prevention device for automotive vehicle service centers An apparatus and method for preventing theft in automotive vehicle service centers. A transmitter transmits a wireless security signal which defines a perimeter. At least one portable tool for use in automotive vehicle service centers includes a receiver configured ... | 10/10/2006 |
| 7116014 | Method and apparatus for stabilizing “DC-DC Transformers” in a distributed power system using remote sense The output voltage of a dc—dc transformer having a ratio of approximately m/n, and which is powered from a main power supply having a remote sense input, can be stabilized by feeding the output of the dc—dc transformer to the remote sense input of the main power... | 10/03/2006 |
| 7106070 | Broad-band low-inductance cables for making Kelvin connections to electrochemical cells and batteries A broad-band technique for reducing the distributed inductance of a four-conductor Kelvin cable is disclosed. A special inductance-canceling cable section is connected in tandem with the cable section contacting the cell/battery. Connections between the two cable se... | 09/12/2006 |
| 7105945 | Lighting device for vehicle A lighting device for a vehicle comprises: a plurality of light source sections connected in parallel with each other; and a transformer for supplying an electric power to the plurality of light source sections. The transformer includes a primary coil and a pluralit... | 09/12/2006 |
| 7088082 | Regulator with variable capacitor for stability compensation A voltage regulator with a variable compensation capacitor is capable of driving a large variable dynamic current load. The regulator includes an error amplifier and an output stage amplifier. The variable compensation capacitor is disposed between the output termin... | 08/08/2006 |
| 7078830 | Connecting circuit and method for connecting a generator to the electricity grid making use thereof The present invention relates to a connecting circuit for connecting to an electricity grid an electric generator for generating electrical energy, comprising a measuring circuit for measuring the current through the connecting circuit; a storage element for storing... | 07/18/2006 |
| 7046531 | Transformerless static voltage inverter for battery systems A static inverter for a battery of elementary, current sources or cells electrically in series and a number N of intermediate voltage taps along the chain of elementary DC current sources, wherein the number of elementary cells comprised between an intermediate tap ... | 05/16/2006 |
| 7034541 | Query based electronic battery tester An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined base... | 04/25/2006 |
| 7030512 | Dynamic current sharing dc-dc switching power supply A power supply in an embodiment of the invention includes a plurality of dc—dc switching power converters, each of which has its input isolated from its output. The power converters are arranged with their respective inputs being series connected and their respect... | 04/18/2006 |
| 7003411 | Electronic battery tester with network communication An electronic battery tester for testing a storage battery includes test circuitry configured to provide a battery test output related to a condition of the battery. A memory stores a battery tester address of the battery tester, and communication circuitry transmit... | 02/21/2006 |
| 7003410 | Electronic battery tester with relative test output An electronic battery tester for testing a storage battery determines a condition of the battery. The condition is a relative condition and is a function of a dynamic parameter of the battery and an empirical input variable. ... | 02/21/2006 |
| 6998847 | Electronic battery tester with data bus for removable module An electronic battery tester is provided for testing storage batteries. Battery test circuitry is configured to couple to the storage battery and measure a condition of the battery. A removable module is configured to couple to the battery tester to add increased fu... | 02/14/2006 |
| 6967484 | Electronic battery tester with automotive scan tool communication An electronic battery tester includes battery test circuitry configured to couple to a battery. A databus is configured to exchange data with external circuitry. ... | 11/22/2005 |
| 6941234 | Query based electronic battery tester An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined base... | 09/06/2005 |
| 6933727 | Electronic battery tester cable A cable for use with an electronic battery tester includes first and second electrical connections configured to couple to terminals of a battery. A memory is configured to store digital data. Electrical terminals are configured to couple the cable to the electronic... | 08/23/2005 |
| 6914413 | Alternator tester with encoded output An alternator tester includes an alternator output measurement circuit configured to measure an electrical output of an alternator. A microprocessor determines a alternator condition as a function of the electrical output. The microprocessor encrypts information and... | 07/05/2005 |
| 6913483 | Cable for electronic battery tester A battery tester cable for coupling an electronic battery tester to a battery includes first clamp and second clamps to provide a connections to terminals of the battery. Cables extend from the clamps. A moveable cable holding device can be positioned along a length... | 07/05/2005 |
| 6906523 | Method and apparatus for testing cells and batteries embedded in series/parallel systems A “three-point” measurement technique effectively removes system effects to determine impedance, admittance, resistance, or conductance of an individual cell, battery, or interconnecting conductor embedded in a series or series-parallel electrochemical battery o... | 06/14/2005 |
| 6781257 | Apparatus for reducing noise from multiple switching regulators An apparatus for reducing switching regulator noise from outputs of multiple switching regulators is disclosed. The apparatus includes an operational amplifier, an capacitor, a resistor and a pair of diodes. The switching regulators are connected in series to provid... | 08/24/2004 |
| 6713992 | Method and apparatus for power supply capable of effectively reducing a power consumption A power supply apparatus includes a DC-to-DC converter performing a voltage conversion converting a voltage of a source power supplied from a direct current power source to a first predetermined voltage lower than the voltage of the source power and a voltage regula... | 03/30/2004 |
| 6646898 | Resonant inverter apparatus The invention provides a resonant inverter apparatus that allows making the number of sensors small and reducing the cost. In an inverter apparatus comprising an inverter circuit 2A, a resonant circuit 2B, and a control circuit 3, a three phase main circu... | 11/11/2003 |
| 6633091 | Storage module The storage module comprises a plurality of storage means Ca-Cd for storing electric energy and energy transfer means 2a-2d and Sa-Sd for transferring stored energy among the plurality of storage means Ca-Cd so that the charging voltage Vca-Vcd across eac... | 10/14/2003 |
| 6608403 | Power supply system with AC redundant power sources and DC redundant power supplies A power supply system with AC redundant power sources and DC redundant power supplies includes a plurality of AC power sources, each of the AC power sources is directly coupled in series with a corresponding one of the DC power supplies which are connecte... | 08/19/2003 |
