Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8138629 | Method and system for distributing energy A method of delivering electrical energy to a point in an electrical power grid, the method including the steps of accessing a source of energy at a first location and converting the energy into a form of transportable energy. The next step is transporting the trans... | 03/20/2012 |
| 8008804 | Methods, systems and apparatus for regulating frequency of generated power using flywheel energy storage systems with varying load and/or power generation Featured are methods for regulating the AC frequency of the electrical power be supplied on an electrical distribution system or grid. Such a method includes electrically coupling an energy storage sub-system to the electrical distribution network, where the energy ... | 08/30/2011 |
| 7919884 | Voltage supply device having a plurality of generators connected in parallel A device for voltage supply includes a first generator and a second generator connected in parallel to it. A control unit is also provided, to which capacity utilization signals are made available by the first and the second generator. By an evaluation of the capaci... | 04/05/2011 |
| 7847431 | Method and system for electrical power generation Electrical power generation systems typically comprise an electrical power distribution arrangement in which a number of electrical power generators are coupled in parallel. In such circumstances in order to avoid conflict generally a first electrical power generato... | 12/07/2010 |
| 7825538 | Power distribution system utilizing redundant AC sources or DC sources A power distribution system includes a plurality of loads and a plurality of power sources. The power distribution system also includes an interconnect arrangement including a plurality of interconnects. The interconnects connect each load to a given number of diffe... | 11/02/2010 |
| 7816812 | Electronic device, and system for DC voltage conversion An electronic device includes: a first input terminal to which a first DC supply voltage of a fuel cell system having a controllable supply voltage is provided; a second input terminal to which a second DC supply voltage of a rechargeable secondary battery is provid... | 10/19/2010 |
| 7781911 | Power supply circuit having power assigning elements between output branches An power supply circuit includes at least one voltage converting circuit, a plurality of output branches, and a plurality of power assigning elements. The at least one voltage converting circuit is configured for converting a primary voltage signal to at least one a... | 08/24/2010 |
| 7745955 | RF plasma supply device The power output of an RF plasma supply device is controlled by producing at least a first and second RF power signal by means of a respective RF generator, coupling at least two RF power signals into a coupled RF power, and distributing the coupled RF power between... | 06/29/2010 |
| 7663265 | Power supply arrangements A power supply arrangement for a distributed entertainment system. The power supply arrangement comprises: first and second power supplies, which are floating in relation to each other; a first electrical connector having a distributed impedance for connecting zone ... | 02/16/2010 |
| 7638897 | Method and system for powering a patient monitoring system The present invention is a method and system for powering a patient monitoring system. The present invention is a modular patient monitoring system utilizing a bi-directional power bus to efficiently couple a multi-parameter acquisition device, a display and any num... | 12/29/2009 |
| 7566988 | Method and apparatus for monitoring UPS power sources An uninterruptible power supply (UPS) system includes a first UPS module that has a first power source, a second power source and a controller operable to selectively connect the first or second power source to a load. A second UPS module is connected in parallel wi... | 07/28/2009 |
| 7564147 | Electrical power distribution system and method with active load control An electrical power distribution system and a method of implementation are provided. The electrical power distribution system includes: a first AC power source; a second AC power source; a first DC bus; a first AC to DC rectifier; a second AC to DC rectifier; and an... | 07/21/2009 |
| 7541692 | Peripheral device having a power supply Peripheral devices that have their own power sources. In one embodiment, a peripheral device comprises a processing device, memory, and a power circuit configured to supply power to a peripheral device component, the power circuit including a power source. ... | 06/02/2009 |
| 7508093 | Modular current supply A current supply system includes one or more, or a plurality of current supply modules that each includes an input terminal and an output terminal and that each has a maximum output power. Multiple current supply modules are electrically combined to form a current s... | 03/24/2009 |
| 7443052 | DC/DC converter and decentralized power generation system comprising a DC/DC converter The invention relates to a DC/DC converter for use in a decentralized power generation system. If a DC/DC converter is physically separated from a power receiving component and connected to such a power receiving component via a DC bus, a short-circuit on the DC bus... | 10/28/2008 |
| 7443053 | Control circuit and method of electric output modes A control circuit and control method of electric output modes for a stacked power supply system which has a circuit board to integrate a plurality of power supply devices to output electricity. The circuit board has a control circuit to actuate the power supply devi... | 10/28/2008 |
| 7405495 | Multicellular DC/DC voltage converter with protection switches A DC/DC voltage converter between a high-voltage electrical network and a low-voltage electrical network comprises a plurality of cells connected in parallel. Each cell comprises a chopper DC/DC converter and a single protection transistor connected in a high-voltag... | 07/29/2008 |
| 7400065 | Electrical power distribution system and method with active load control An electrical power distribution system is provided. The electrical power distribution system includes: a first AC power source (1a); a second AC power source (1b); a first DC bus (6a); a first AC to DC rectifier (5 | 07/15/2008 |
| 7365565 | Programmable system on a chip for power-supply voltage and current monitoring and control A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and voltage-measuring and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip chip... | 04/29/2008 |
| 7362601 | Power supply device A power supply device includes two input ports, two output ports, a transformer having primary and secondary windings, a switch device, and a controller. The switch device includes a switching element connected in series with the primary winding, and a capacitor. Th... | 04/22/2008 |
| 7362005 | Isolated dual battery system An isolated dual power source system for isolating a first power source of a vehicle, connected to an engine starter, from a second power source of the vehicle which has an electrical circuit for distributing electrical power among the consumers, includes first and ... | 04/22/2008 |
| 7352206 | Integrated circuit device having state-saving and initialization feature An integrated circuit device has a state-saving feature and includes a programmable logic block, I/O pads, a dedicated register, at least one volatile memory block, a non-volatile memory block, a condition-sensing circuit for detecting at least one condition, A cont... | 04/01/2008 |
| 7340051 | Power ramp-up in a line-powered network element system A method of ramping up a power supply that supplies power on a communication medium. The method includes supplying power on the communication medium with the power supply operating at a first set point, determining if an overload condition exists, and, if the overlo... | 03/04/2008 |
| 7332833 | Switching circuit for master-slave feeding mode of low voltage power supply The present invention provides a switching circuit for the master-slave feeding mode of the low voltage power supply. The switching circuit utilizes the active switches as the switching devices, so that it can increase the switching speed, decrease the voltage drop ... | 02/19/2008 |
| 7301247 | Power supply device incorporated in vehicle driven by internal combustion engine A power supply device incorporated in a vehicle driven by an internal combustion engine including: a first power supply system for driving a vehicle load that converts an output of a generation coil provided in a generator driven by an internal combustion engine int... | 11/27/2007 |
| 7301313 | Multiple voltage regulators for use with a single load Multiple voltage regulators for use with a single load. The present invention allows power to be supplied to an electrical load using multiple voltage regulators based on the operating environment of the load. In one embodiment, a primary voltage regulator that is b... | 11/27/2007 |
| 7295021 | Process and circuit for protection of test contacts in high current measurement of semiconductor components To limit the current in heavy current testing of semiconductor components with test needles, upstream of each needle a circuit is connected which has low resistance in the range of allowable currents and has high resistance above a given limit current in order to li... | 11/13/2007 |
| 7291938 | Power supply apparatus and method based on parasitic power extraction Power supply apparatus and method based on parasitic power extraction is disclosed. Power is extracted from signals that are inbound and/or outbound from an equipment. The extracted power is converted to dc voltages for a device associated with the equipment. The po... | 11/06/2007 |
| 7276815 | Power management system A method of managing power resources for an electrical system of a vehicle may include identifying enabled power sources from among a plurality of power sources in electrical communication with the electrical system and calculating a threshold power value for the en... | 10/02/2007 |
| 7259473 | Method of controlling parallel diverse conversion paths in DC-to-DC power converter A DC-DC converter has a plurality of diverse type DC-DC converter channels whose outputs are combined to provide a composite DC power output to a load. One of the channels is a high efficiency power path that supplies the average current demand of the load. A second... | 08/21/2007 |
| 7256610 | Programmable system on a chip for temperature monitoring and control A programmable system-on-a-chip integrated circuit device includes a programmable logic block, at least one user non-volatile memory block, and temperature sensing and control analog and digital circuits on a single semiconductor integrated circuit chip or a flip ch... | 08/14/2007 |
| RE39710 | System for providing assured power to a critical load A power system (8) is provided for economically supplying uninterrupted electrical power to one or more critical loads (14). One or more fuel cell power plants (18) provide one substantially continuous source of power, and a utility grid (10 | 07/03/2007 |
| 7239045 | Power distribution system and control system for same A control system for a power distribution system includes electrical operators each of which has an open input, a close input and an operator member adapted to cooperate with a corresponding circuit breaker operating mechanism. Each operator member responds to the c... | 07/03/2007 |
| 7230351 | Circuit arrangement for stabilizing a supply voltage and method for operating said circuit arrangement A voltage source is formed by a series connection of a first energy accumulator (accumulator B1) and a second energy accumulator (capacitor C1). The voltage (UC1) of the second energy accumulator (C1) is adjusted in such a way that the su... | 06/12/2007 |
| 7227278 | Multiple bi-directional input/output power control system A multiple bi-directional input/output power control system includes a network of functional blocks housed in a single enclosure, providing DC power to one or more DC loads, and providing control and internal pathways, sharing one or more AC and/or DC power inputs. ... | 06/05/2007 |
| 7224084 | Interface circuit When an AC adaptor is removed and a power supply to a power node NP of a ROM writing apparatus is stopped, an analog switch which is controlled by a voltage at the power node NP is turned off. Thus, even if a power voltage VTG of a user board side is applied, a data... | 05/29/2007 |
| 7209357 | Universal modular power supply carrier A universal modular power supply carrier mounts different sized power supplies within a substantially rectangular body designed for thermal and electromagnetic emissions control. The power supplies are preferably secured within the carrier body. Input connectors may... | 04/24/2007 |
| 7190210 | Switched-capacitor power supply system and method A plurality of thin-film capacitors are grouped in phases. A control circuit switches each phase between charging and discharging states devised to supply one or more loads with controlled power. ... | 03/13/2007 |
| 7176656 | Tool with battery pack A handheld tool has an attached position in which the tool is removably attached to a battery pack. The battery pack has an auxiliary battery and output terminals for outputting electricity from the auxiliary battery. The tool includes a load and a primary battery. ... | 02/13/2007 |
| 7170194 | Configurable multiple power source system A system for supplying additional power to a module having an internal power supply, the system comprising: a module having an associated power supply, the power supply not being designed to accommodate power sharing; at least one load associated with the module, th... | 01/30/2007 |
