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| Number | Title | Issue Date |
| 7969124 | Power supply apparatus, test apparatus, and electronic device There is provided a power supply apparatus including a power supply section that supplies an output current to an external load, and a current control section that flows an electric current varying in a direction opposite to a supply current being supplied to the po... | 06/28/2011 |
| 7956585 | Mutual blanking for a multi-channel converter A shutter circuit is provided for a multi-channel converter to blank the switching noise produced by the switching of the converter. The shutter circuit monitors the switching of the switches in the output stages of the converter, and when one channel performs switc... | 06/07/2011 |
| 7352544 | Method and apparatus for providing a remedial strategy for an electrical circuit A method and electrical circuit for dynamic reconfiguration of a DC-to-AC inverter comprising first and second power rails where each the rails has a power source. The method comprises monitoring the first and second power rails for short-circuit failure; and upon f... | 04/01/2008 |
| 7336780 | Differential signaling transmission circuit The application discloses driver circuits including a current source, a current sink, and a current steering circuit configured to provide current to a load. The current sink is configured to be controlled according to a regulated voltage. Signal generator circuits ... | 02/26/2008 |
| 7330018 | Step-down controller circuit A step-down controller has an input having a first and a second input terminal for applying an input voltage, an output having a first and a second output terminal at which an output voltage can be provided, a series circuit including a switch and an inductance whic... | 02/12/2008 |
| 7296168 | Method and apparatus to minimize power and ground bounce in a logic device A predictive power regulation apparatus and method that minimizes power and ground bounce in a logic device. The apparatus includes a predictor and a voltage or current smoothing device connected to the predictor. The voltage or current smoothing device outputs adju... | 11/13/2007 |
| 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 |
| 7236338 | System and method for remotely detecting and locating faults in a power system A system and method are provided for remotely detecting and locating faults in a power system. The system includes at least one slave controller and at least one supplemental protection module. The slave controller is disposed proximate at least one load and electri... | 06/26/2007 |
| 7221134 | Apparatus and method for flywheel current injection for a regulator A constant on-time regulator that may use a capacitor with low ESR without needing a series resistor is provided. A capacitor is employed to AC-couple a current sense voltage into the reference signal to provide a modified reference signal. The comparator compares t... | 05/22/2007 |
| 7215248 | Diode receiver for radio frequency transponder A passive radio frequency transponder (RF tag) having a diode rectifier receiver circuit outside the tag power rectification circuit, the tag power rectification circuit supplying power to the electronics of the RF tag. An additional innovative low current circuit p... | 05/08/2007 |
| 7180402 | Phase modulation in RF tag A radio frequency (RF) communication system employs phase-modulated backscatter signals for RF communication from an RF tag to an interrogator. The interrogator transmits a continuous wave interrogation signal to the RF tag, which based on an information code stored... | 02/20/2007 |
| 7123829 | Digital camera and power supply apparatus used therefor A digital camera, including a common power supply for supplying power; a plurality of motors sharing the power supply and driven by the power supplied from the power supply; and a current detector for detecting load current supplied to the plurality of motors, where... | 10/17/2006 |
| 7024522 | Worm guarantee storage device employing block write inhibition information To provide a disk array system which particularly enables the use of a WORM function when the disk array system uses RAID. When receiving a write request from a computer (100), it is judged whether or not a writing of write data from the computer is possible,... | 04/04/2006 |
| 7019497 | Circuits and methods for synchronizing non-constant frequency switching regulators with a phase locked loop Methods for synchronizing non-constant frequency switching regulators with a phase locked loop are disclosed. The methods enable non-constant frequency switching regulators to be synchronized with a phase locked loop to achieve constant frequency operation in steady... | 03/28/2006 |
| 6943558 | System and method for remotely detecting electric arc events in a power system A system is provided for remotely detecting and locating damaged conductors. The system includes at least one slave controller disposed proximate at least one load and electrically connected to the loads via at least one conductor. The slave controller includes at l... | 09/13/2005 |
| 6933774 | Rectifying charge storage element with transistor A composite rectifying charge storage device, consisting of a rectifier and a capacitor which share common elements, further includes a transistor. ... | 08/23/2005 |
| 6917658 | Clock recovery method for bursty communications Clock recovery method for bursty communications. A method is disclosed for recovering the clock from a received data stream that comprising bursts of data with zones of substantially no data between the bursts of data. A receive clock is provided that operates withi... | 07/12/2005 |
| 6914528 | Wireless communication systems, radio frequency identification devices, methods of enhancing a communications range of a radio frequency identification device, and wireless communication methods Wireless communication systems, radio frequency identification devices, methods of enhancing a communications range of a radio frequency identification device, and wireless communication methods are described. According to one aspect, a wireless communication system... | 07/05/2005 |
| 6657405 | Automatically controlled dc power supply output circuit for shunting the power supply output in response to stored voltage of counter EMF generated by the load An automatically controlled DC power supply output circuit includes an isolation diode connected in series between the power supply and the load, a terminal voltage detection circuit connected in parallel between the power supply and the load on the load ... | 12/02/2003 |
| 6632031 | Shunt transient voltage regulator in a processor package, method of making same, and method of using same A shunt voltage regulator for a processor is disposed on the processor package. The shunt voltage regulator responds to AC transients. One embodiment includes a DC power converter voltage regulator that is disposed off the processor package, and that is o... | 10/14/2003 |
| 6476589 | Circuits and methods for synchronizing non-constant frequency switching regulators with a phase locked loop Methods for synchronizing non-constant frequency switching regulators with a phase locked loop are disclosed. The methods enable non-constant frequency switching regulators to be synchronized with a phase locked loop to achieve constant frequency operatio... | 11/05/2002 |
| 6377031 | Intelligent switch for power management A method and system for managing power in a device having a power source is described. The system includes a switch and at least one controller. The switch is coupled with the power source and a portion of the device. The at least one controller is couple... | 04/23/2002 |
| 6265853 | Power source unit for transferring energy between power sources that power an electric vehicle A power source unit for use in vehicle is disclosed that effectively transfers energy between two power sources. The power source unit includes a main power source connected to input terminals of a current control circuit, such as insulation type power tr... | 07/24/2001 |
| 6140924 | Rectifying antenna circuit A rectifying antenna circuit for a passive RF transponder comprising a series resonant circuit of an antenna, a voltage rectifier circuit including a diode and a capacitance shunting the diode, the capacitance providing a primary voltage amplification rol... | 10/31/2000 |
| 6078490 | Method of treating materials with pulsed electrical fields A method is provided for treating materials, especially organic materials, with pulsed electrical fields, wherein the method includes the step of applying an agile pulse sequence having at least three pulses to a material, wherein the agile pulse sequence... | 06/20/2000 |
| 5920132 | Non-rotating portable voltage sag generator A non-rotating portable voltage sag generator includes for each phase a pair of cascaded standard industrial auto-transformers each having, for example, six taps and when they are cascaded the final output voltage of each phase is a product of the per uni... | 07/06/1999 |
| 5847549 | Power converter stabilization loop The invention provides a stabilized power converter having an input voltage and an output voltage, where the stabilized converter operates similar to a conventional converter under normal conditions, and operates continuously at the maximum power transfer... | 12/08/1998 |
| 5838144 | Solid state, reduced voltage motor starter enabling equalized input/output volt-amp ratings A motor starter circuit for minimizing the amount of current drawn by the motor from a power source during starting of the motor through current transformation achieved by selectively controlling actuation of a plurality of high speed switches. The circui... | 11/17/1998 |
| 5786683 | Electric supply control A power supply system for premises (12') has a meter (20) which stores tariff information (rates and times) received via mains signalling from a controller (13). An outlet (33) has control means (40) responsive to the tariff information stored in the mete... | 07/28/1998 |
| 5731691 | Power supply circuitry for a transponder and operable with infinitesimal power from receiving antenna In a transponder, power supply circuitry is connected to an antenna and a response circuit. DC power to be fed to the response circuit is generated out of an electromagnetic wave come in through the antenna. A rectifier diode has an n type and a p type se... | 03/24/1998 |
| 5729120 | Dynamic voltage regulation stabilization for AC power supply systems Instabilities in the output voltage provided from an AC power supply system such as an uninterruptible power supply connected to a power factor correcting load are suppressed by a dynamic voltage regulation stabilizer system which is connected across the ... | 03/17/1998 |
| 5703790 | Series connection of multiple digital devices to a single power source A digital processing system including a first processor (11) and a second processor (21) connected in series between a first power supply node (101) and a second power supply node (103). The second processor is configured to operate at a variable processi... | 12/30/1997 |
| 5701071 | Systems for controlling power consumption in integrated circuits Systems for controlling the current consumption of an integrated circuit chip and the like so as to reduce the inductive voltage drops occurring over the power supply lines within the chip and power supply lines to the chip are disclosed. The systems acco... | 12/23/1997 |
| 5550411 | Downhole instrument power supply system using shunt voltage regulation A downhole power supply system having a variable voltage surface power supply and a downhole shunt voltage regulator between which is disposed in series an energy transducing device. The shunt voltage regulator comprises a current control device which con... | 08/27/1996 |
| 5541808 | Switchgear incorporating an active filter An active filter device is provided for incorporation into a switchgear lineup. The switchgear lineup has a plurality of electrical sections including a main circuit breaker section and a load circuit breaker section spaced from the main circuit breaker s... | 07/30/1996 |
| 5434497 | Vernier enhanced control for shunt connected thyristor-controlled capacitors A firing controlled scheme including a method and apparatus for vernier operation of a shunt-connected thyristor-controlled capacitor (STCC) uses phase controlled firing of the thyristors based on monitored line voltage, monitored thyristor current, and a... | 07/18/1995 |
| 5218283 | AC motor drive system with a two phase power supply A motor drive system for driving a conventional single phase PSC motor from a two-phase power source which allows for convenient motor direction reversal. In one embodiment, the PSC motor is supplied from a three-phase inverter that is controlled to gener... | 06/08/1993 |
| 5136216 | AC motor drive system A motor drive system for driving a conventional single phase PSC motor from a two-phase power source. In one embodiment, the PSC motor is supplied from a three-phase inverter that is controlled to generate two-phase power. In another embodiment, the PSC m... | 08/04/1992 |
| 5045770 | Shunt regulator for use with resonant input source A regulator is provided for receiving electrical power from an external alternating magnetic field and developing a regulated output voltage. The regulator is operatively coupled to a resonant inductive circuit for obtaining input power. It includes a cir... | 09/03/1991 |
| 4352053 | Temperature compensating voltage generator circuit A temperature compensating voltage generator circuit for compensating temperature characteristics of an electric circuit whose electrical characteristic varies in accordance with the change of the ambient temperature and whose electrical characteristic ca... | 09/28/1982 |
