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7626283 |
Alternative alternating current power supply and method of its use
An alternative power source provides alternating current (AC) through a proper connector into a first outlet of a pre-existing electrical distribution system which is normally powered by an...
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7612469 |
Dual-input redundant power supply
A dual-input redundant power supply system includes a first AC source having a hot line and a neutral line, a second AC source having a hot line and a neutral line, a power relay, and an AC to DC...
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7608946 |
Boosting circuit and integrated circuit having the same
In a boosting circuit, a power supply section includes a first power supply configured to supply a first reference voltage and a second power supply configured to supply a second reference voltage....
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7605498 |
Systems for highly efficient solar power conversion
A high efficiency photovoltaic DC-DC converter achieves solar power conversion from high voltage, highly varying photovoltaic power sources to harvest maximum power from a solar source or strings...
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7605492 |
Power supply system and method for supplying power to a vehicle
A power supply system is provided that can operate with energy storage units of varying voltages and temperatures, that can correct voltage and temperature deviations, and that can continue to...
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7599484 |
Element management system for managing line-powered network elements
A method of managing power at an element management system for a power sourcing network element and a power sinking network element of an access network is provided. The method includes identifying...
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7595569 |
Versatile and intelligent power controller
The invention provides a monolithic, highly integrated power supply circuit capable of providing various voltages for circuits on an expansion card, either from a main supply source or an auxiliary...
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7586768 |
Electric power conversion apparatus for plural DC voltage sources and an AC electrical load
An electric power conversion apparatus includes a power converter connected to at least a first DC voltage source, a second DC voltage source and an AC electric motor. A control unit controls the...
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7579716 |
Power storage device and image forming apparatus
A power storage device includes an alternating current (AC) power source, a field effect transistor (FET), a capacitor bank, a direct current (DC) fixing heater, a step-down chopper circuit, and an...
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7576600 |
Supply voltage switching circuit
A supply voltage switching circuit for a computer includes a chipset, a first transistor and a second transistor. The chipset includes a first MOSFET and a second MOSFET. A 5V system voltage and a...
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7564149 |
Sequentially-controlled solar array power system with maximum power tracking
A power and control architecture employing circuitry that sequentially regulate power flows from independent solar-array sources or a mixture of power sources providing power to a common load. The...
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7557461 |
Power supply device and power supply method
The power supply device of the present invention supplies power highly reliably by suppressing an increase in costs even when a multiplicity of load groups are present. When operating normally,...
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7554383 |
Chip for non-contact reader/writer having power-supply management function
The present invention relates to a semiconductor integrated-circuit device capable of seamlessly switching a power source obtained by rectifying a carrier wave and an external power source. The...
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7535123 |
Apparatus and method for selectively coupling system with a first power supply or a second power supply
An apparatus for selectively coupling a system with a first power supply or a second power supply includes: (a) a first switch for effecting a first coupling of the system with the first power...
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7535122 |
Various methods and apparatuses for a multiple input-voltage-level voltage-regulator and a multiple voltage-level DC power supply
A method, apparatus, and system are described in which operating characteristics of voltage regulator (VR) may be controlled. Example operating characteristics that are controlled may be 1) power...
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7525219 |
Providing power to a module
A method to couple a module to a board including power circuitry. The method includes detecting a module's power requirements before providing payload power to the module and routing a regulated...
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7523321 |
Information handling system including a battery switching circuit
An information handling system (IHS) includes a system board including a processor, a first battery for supplying power to the system board, a second battery for supplying power to the system...
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7514819 |
Semiconductor switch assembly for pulse power apparatus
A capacitor-type pulse power apparatus for generating an electric current power pulse through an electrical load, comprises a charging power supply and at least one pulse power supply module. The...
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7492215 |
Power managing apparatus
A power managing apparatus is utilized to control a first supply voltage, a second supply voltage, and a substrate voltage of a digital circuit. The power managing apparatus includes a voltage...
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7482711 |
Auxiliary power switching arrangement for PCI Express, PC's and similar applications
A series pass transistor voltage regulator is described having a main power source and an auxiliary power source. When the main power source voltage falls to a level the regulator can no longer...
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7468567 |
Power switching apparatus and network equipment
The invention provides a power switching apparatus used in a network equipment in order to switch power generated by the Ethernet and an D.C. power supply. The power switching apparatus comprises a...
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7456522 |
Line powering of auxiliary equipment
An electronics module for powering auxiliary equipment by using power from a line powered remote unit is provided. The electronics module includes one or more current and inrush limiting control...
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7449866 |
Booster that utilizes energy output from a power supply
A booster circuit generates a boosted output by boosting a low voltage output supplied as a target to be boosted and feeds back a part of the boosted output, an output by the booster circuit...
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7449796 |
Power over ethernet controller suitable for multiple modes
A power over Ethernet controller supporting a plurality of powering modes, the power over Ethernet controller comprising: a pair of power sourcing equipments; and a control circuit; the control...
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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...
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7436087 |
Power line conditioner
An electrical power conditioning apparatus in accordance with the present invention generally includes an electrical input for receiving power from the power source, a surge suppression circuit and...
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7423893 |
Power supply having two switch-mode power supply units
A power supply has first and a second switch-mode power supply (SMPS) units, which both contain a transformer having a primary winding and at least one secondary winding, and a driver stage. The...
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7420296 |
Power supply circuit
A control circuit for a power supply circuit that selects an appropriate power source to continuously supply power. The control circuit includes a power synthesizing circuit for generating...
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7414332 |
Electric power unit and electronics device obtaining power from a plurality of power sources
An electric power unit selectable and usable a plurality of electric sources, including an electric source-discriminating device to detect attached electric sources of the plurality of electric...
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7408273 |
Shore power access system
A shore power access system ( 10 ) for directing shore power to a power distribution center ( 34 ) of a boat ( 12 ) includes at least two shore power inlets ( 30 ) mountable onboard the boat. The...
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7378756 |
Battery backup electric plug with female plug
A plug which is attached to a power cord of an appliance, such as a clock or an appliance having an internal clock, includes a battery that will supply power to the appliance during a failure of...
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7375442 |
Interface circuit for providing a computer logic circuit with first and second voltages and an associated method
A universal interface circuit and an associated method are provided that can supply a computer logic circuit, such as the components mounted upon an adapter card, with first and second inputs...
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7362009 |
Chain reaction control circuit for parallel power supply
A chain reaction control circuit for parallel power supply provides greater power without changing the design of the original power supply structure. It includes a control unit to receive a first...
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7362008 |
Electrical interface extension with isolation function
An apparatus for selectively coupling electrical connectors. The apparatus includes a common connector electrically coupled to a secondary connector and a primary connector electrically coupled to...
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7355304 |
X-ray device
X-Ray equipment, that as well as having a controlled current converter, a capacitor bank, an inverter, a supply source, and a high voltage transformer, has inlet voltage evaluation equipment that...
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7345380 |
Backup power supply system with a null transfer time
A backup power supply system supplies power from a first ac power source in normal condition. Once the first ac power source is abnormal or fails, the system automatically turns off the first ac...
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7342328 |
Methods and circuits for tracking and sequencing multiple power supplies
The present invention relates to methods and circuits for controlling outputs of one or more slave power supplies in one or more defined relationships to a master signal. The defined relationships...
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7332896 |
Apparatus and method for controlling supply voltage in multiple interface card
An apparatus and method for controlling a supply voltage of a multiple interface card includes a first voltage adjustment unit, a second voltage adjustment unit, an internal circuit, a first...
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7301248 |
Control method for voltage boosting circuit
A control method for a voltage boosting circuit adapted to be used in an uninterruptible power supply is proposed. The uninterruptible power supply includes a battery module and a voltage boosting...
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7286005 |
Supply voltage switching circuit
A supply voltage switching circuit for a computer includes a chipset, a first transistor, a second transistor, and a third transistor. The chipset includes a first MOSFET and a second MOSFET. A 5V...
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7279854 |
Charge pump interface circuit
A ballast circuit including a charge pump interface circuit is disclosed to provide a method of isolating a switch from a power line used to power a ballast for supplying electrical power to a...
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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...
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7262520 |
Robust power distribution systems and methods
The present invention provides systems and methods that allow for individual power sources to be disconnected and reconnected without interrupting the power supply from the other power sources and...
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7258572 |
Modular DC power step down adapter
An apparatus for providing DC power to a portable computer operating at a source voltage and a peripheral device operating at step down voltage having a lower magnitude has an input cord for...
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7254002 |
Reverse conduction protection method and apparatus for a dual power supply driver
The invention is a dual stage power supply with a protection circuit for preventing reverse conduction through the lower voltage driver of the dual stage power supply and excess power dissipation...
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7253589 |
Dual-source CMOS battery charger
A circuit for charging a battery by selecting among two available power sources while providing overcharging and temperature protection to the battery and managing a charging current is described....
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7245469 |
DC backup power supply device and method for diagnosing the same
A reliable uninterruptible DC power supply device. The DC backup power supply device includes an AC/DC converter, a DC/DC converter, voltage step-up/down choppers and a battery connected to a DC...
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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...
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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...
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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...
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