Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 8169107 | Method and system for reducing switching losses in a high-frequency multi-cell power supply A method of reducing switching losses in a power supply includes the steps of advancing the output voltage of a first pole of a power cell by a first angle, retarding the output voltage of a second pole of the power cell by a second angle, and producing a combined o... | 05/01/2012 |
| 8120205 | Adding and dropping phases in current sharing A distributed power management system may include a digital communication bus and a plurality of POL (point-of-load) regulators coupled to the communication bus and configured in a current sharing arrangement in which each POL regulator of the plurality of POL regul... | 02/21/2012 |
| 8115337 | Soft-start circuit An apparatus is provided. The apparatus comprises an input circuit, a startup circuit, and a current limiter. The input circuit is coupled to a first source and is adapted to provide a first voltage and a first current to a load having a capacitance. The startup cir... | 02/14/2012 |
| 8093754 | High voltage array converter Methods for compensating for reduced power output in stages of electrical power may be implemented within a direct current to pulse amplitude modulated (“PAM”) current converter, denominated a “PAMCC”, is connected to an individual source of direct current. ... | 01/10/2012 |
| 8084884 | Adaptive gate drive systems and methods Aspects of the invention pertain to optimization of voltage converter efficiency for all load conditions. A signal conditioning circuit is electrically connected to a number of buck converter modules that supply power to different loads. Each module includes a volta... | 12/27/2011 |
| 8076797 | Energy transfer circuit and method An energy transfer circuit for connecting a load to multiple energy sources that can have different voltages. The energy transfer circuit connects the load and at least two energy sources, and has a control unit. The energy transfer circuit can transfer energy from ... | 12/13/2011 |
| 8044534 | Method of controlling DC/DC converter, method of controlling DC/DC converter apparatus, and method of controlling driving operation of electric vehicle When a DC/DC converter switches between a primary voltage control mode, a secondary voltage control mode, and a current limiting mode as operation modes, an I-term resetting processor outputs an I term depending on the duty ratio in the operation mode before being s... | 10/25/2011 |
| 7960861 | Redundant current supply with diagnostic capability and a suppressor A circuit arrangement and method for redundantly supplying current to a downstream load are provided. The circuit arrangement includes a first current path including a first switch element to which a first voltage is applied on the input side, a second current path ... | 06/14/2011 |
| 7948116 | Method and apparatus for controlling a supply current for a circuit or a plurality of circuit blocks A method for controlling a supply current for a circuit comprises setting a target value of a quantity related to a supply current, said target value being different from a presently established value of the quantity, and adjusting the quantity until a value of the ... | 05/24/2011 |
| 7915761 | Power injector detection In one embodiment, a signal detector is coupled to an external power source. The signal detector is configured to ascertain whether a predetermined signal was received from the external power source. Control logic is coupled to the signal detector and to the externa... | 03/29/2011 |
| 7884500 | High voltage array converter A direct current to pulse amplitude modulated (“PAM”) current converter, denominated a “PAMCC”, is connected to an individual source of direct current. The PAMCC receives direct current and provides pulse amplitude modulated current at its output. An array o... | 02/08/2011 |
| 7872372 | Power circuit A device for delivering a desired power to a load comprises a voltage detection module, a comparator module, a power regulation module, and a current source. The voltage detection module generates a voltage signal based on a voltage across the load. The comparator m... | 01/18/2011 |
| 7825539 | Electronic device with power connection module An electronic device includes a first power supply unit, a second power supply unit, and a control circuit. The control circuit connected between the first power supply unit and the second power supply unit is configured for detecting an output power of the first po... | 11/02/2010 |
| 7795755 | Simple circuit and method for improving current balance accuracy of a power converter system A power converter system includes multiple converter modules connected to a share bus. Each of the converter modules mirrors the phase current of itself to provide a mirror current to the share bus, extracts an average current from the share bus, and compares the ph... | 09/14/2010 |
| 7795754 | Slope control device capable of predicting uniform-current-sharing level and method thereof The present invention discloses a slope control device capable of predicting uniform-current-sharing level and method thereof which can be applied in a redundancy or distributed power system for providing better uniform-current-sharing ability. The device comprises ... | 09/14/2010 |
| 7755215 | Method and circuit to output adaptive drive voltages within information handling systems A method and circuit to output adaptive drive voltages within information handling systems is disclosed. According to one aspect of the disclosure, a method of outputting power within an information handling system can include sensing a load current of a power outpu... | 07/13/2010 |
| 7675196 | Power supply apparatus and image forming apparatus A circuit unit connects outputs from a first power supply and a second power supply in parallel, and simultaneously supplies powers from both power supplies to a load. A control unit controls an output current from the first power supply to an upper-limit value or l... | 03/09/2010 |
| 7635925 | Analog combination regulator Methods and apparatus may provide for multiple input voltage regulation in which a current supplied to an output node divides among voltage regulators according to their respective input voltages when the difference in input voltages falls within a voltage range. Wh... | 12/22/2009 |
| 7535121 | High voltage power supply apparatus and method of correcting current output from the apparatus A high voltage power supply apparatus and a method of correcting current output from the high voltage power supply apparatus. The high voltage power supply apparatus includes a switching unit; a transformer; a pulse width modulation signal processing unit, which rec... | 05/19/2009 |
| 7466037 | Power supply control circuit A power supply control circuit is disclosed. The power supply control circuit controls a current which is supplied from a power source to a load. The power supply control circuit includes a reverse current detecting circuit which detects a reverse current flowing fr... | 12/16/2008 |
| 7449797 | Storage apparatus power supply unit and storage apparatus management method In a power supply unit for a storage apparatus according to the present invention, it is possible to detect a power supply abnormality inside a device of another company, for which environment information is not directly acquirable. For a load device provided by a v... | 11/11/2008 |
| 7446431 | Multi-input single-output power converter and method thereof A multi-input single-output power converter comprises several switching regulators coupled to a common output for converting separate supply voltages to an output voltage in compliance with respective modulation signals. The output voltage is compared with a first r... | 11/04/2008 |
| 7429806 | Smart power supply A power supply includes an input component that receives power from a source and an automatic load sense (ALS) component associated with the power supply that monitors and regulates at least two or more of current and power output from the power supply. An output co... | 09/30/2008 |
| 7375443 | CPU surge reduction and protection Methods and systems of providing power to a central processing unit (CPU) provide for enhanced surge protection during CPU current consumption going from high current to low current consumption. In one approach, a circuit as a power output stage with an output node,... | 05/20/2008 |
| 7352082 | Transfer switch device and method This disclosure is concerned with devices and methods for voltage source transfer switching that reduces or eliminates transformer saturation due to DC flux built up during a transfer event. First and second voltage sources (primary and alternate) are connectable to... | 04/01/2008 |
| 7330990 | Information processing apparatus and method, and computer-readable medium Based on information that is transmitted to a UPS communication part by UPSs connected to an information processing apparatus, a UPS monitoring part monitors the states of the UPSs. A UPS control part employs the monitoring results to generate control information fo... | 02/12/2008 |
| 7323794 | Independent control of output current balance between paralleled power units An information handling system power supply system has a plurality of power supply units (PSUs) with outputs connected in parallel and a current balancing circuit for equalizing current from these outputs. A pseudo output current value may be added to the actual out... | 01/29/2008 |
| 7312539 | Output suppressing method of a plurality of dispersed power sources and dispersed power source managing system Regarding output suppression control of a plurality of dispersed power sources linked to a high-voltage-to-low-voltage transformer of a commercial power system, the partiality of the output suppression of a plurality of dispersed power sources is eliminated and, cos... | 12/25/2007 |
| 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 |
| 7285874 | Automatic sensing power systems and methods An automatic sensing power system automatically determines a power requirement for an electrical device, converts power to the required level, and outputs the power to the electrical device when the electrical device is connected to the automatic sensing power syste... | 10/23/2007 |
| 7281070 | Multiple master inter integrated circuit bus system A multiple-master Inter Integrated Circuit (“I2C”) bus system includes a first master device including a first processing device within a first power boundary and a second master device including a second processing device within a second power boundary c... | 10/09/2007 |
| 7277303 | Power source apparatus There is provided a power source apparatus that includes a master circuit and a slave circuit provided in parallel and outputs an electric current that adds an electric current output from the master circuit and an electric current output from the slave circuit as a... | 10/02/2007 |
| 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 |
| 7272733 | Method of providing dynamic power redundancy based on a difference of current power units and currently needed power units One embodiment disclosed relates to a method of providing dynamic power redundancy for a system. A number of power supply units, n, that are presently in an up state is tracked. In addition, a number of power supply units, N, that are presently needed to supply powe... | 09/18/2007 |
| 7259474 | Method and apparatus for aggregating power from multiple sources A method and apparatus for aggregating power from multiple sources generates a single direct current regulated voltage. The apparatus comprises a plurality of slave voltage converters and a master pulse width modulator circuit. Providing a plurality of direct curren... | 08/21/2007 |
| 7242110 | Control system for canceling load unbalance of three-phase circuit A control system for canceling load unbalance of a three-phase circuit includes phase current detectors for detecting phase currents caused to flow through a secondary circuit of a current transformer provided in high voltage distribution lines, respectively, phase ... | 07/10/2007 |
| 7242111 | Automatic sensing power systems and methods An automatic sensing power system automatically determines a power requirement for an electrical device, converts power to the required level, and outputs the power to the electrical device when the electrical device is connected to the automatic sensing power syste... | 07/10/2007 |
| 7236896 | Load management in a power system Load demands in a power system are managed by determining whether load demands on one or more power system components need to be varied. If the load demands need to be varied, new load demands to be placed on the power system components are determined. The load dema... | 06/26/2007 |
| 7233081 | Power-supply device A power-supply device suppresses high harmonic waves, controls the flow of AC power, and minimizes adverse effects on a load that might otherwise be caused by a large surge of current into the load during the startup or stopping of the power-supply device. The power... | 06/19/2007 |
| 7230352 | Compact power supply The present invention discloses an electrical power supply for providing electrical power to a load, the power supply comprising a plurality of energy storage elements each having a different operating characteristic and connected in an electrical circuit to the loa... | 06/12/2007 |
