Quotables
"There is practically no chance communications space satellites will be used to provide better telephone, telegraph, television, or radio service inside the United States."
T. Craven, FCC Commissioner ; 1961
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8446745 | Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a cro... | 05/21/2013 |
| 8441819 | Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a cro... | 05/14/2013 |
| 8432711 | Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a cro... | 04/30/2013 |
| 8391033 | Power transfer devices, methods, and systems with crowbar switch shunting energy-transfer reactance The present application discloses methods, circuits and systems for power conversion, using a universal multiport architecture. When a transient appears on the power input (which can be, for example, polyphase AC), the input and output switches are opened, and a cro... | 03/05/2013 |
| 8379419 | Soft-stop overvoltage protection circuit for power factor correction type switching power supply unit A soft-stop overvoltage protection circuit, into which a soft-stop overvoltage detection voltage proportional to a direct current output voltage is input, reduces the output of a multiplier in accordance with the soft-stop overvoltage detection voltage when the soft... | 02/19/2013 |
| 8289739 | Power supply continuous input voltage extender A system and method for providing acceptable output power from a wide range of received power, comprising: outputting a received voltage as an output voltage if the received voltage does not exceed a threshold; and limiting the output voltage to the threshold if the... | 10/16/2012 |
| RE43516 | Fault detection for loss of feedback in forced switching power supplies A device corrects the power factor in forced switching power supplies and includes a converter and a control device to obtain a regulated voltage on an output terminal. The control device comprises an error amplifier having an inverting terminal (Vout) and a non-inv... | 07/17/2012 |
| 8174854 | Switching power supply system with reduced current consumption at light load A switching power supply system has a control circuit that controls an output voltage by causing a switching device to turn ON and OFF. The control circuit includes a control pulse supplying unit that supplies a pulsed signal that keeps the switching device turned-O... | 05/08/2012 |
| 8036003 | Switching power supply device and electrical apparatus using the same The present invention provides a switching power supply device capable of automatically restarting an electrical apparatus without a user operation when a voltage of the electrical apparatus or an operation of the electrical apparatus is abnormal. The switching powe... | 10/11/2011 |
| 8004866 | Method and apparatus to remove energy from DC loads A DC output power converter or DC switch device that includes methods and apparatus to reverse the current in the connected load, thereby draining the load's energy until the voltage in the load is brought to a (near) zero potential and held there. ... | 08/23/2011 |
| 8000116 | Output protection circuit of a power converter An output protection circuit used for a power converter having an operational amplifier, a diode, a number of voltage-dividing resistors, and a switch tube. In this circuit, the voltage-dividing resistors are connected in series to form a voltage-dividing network, o... | 08/16/2011 |
| 7965526 | Self powered supply for power converter switch driver Self-powered supplies with on-board diagnostics are presented for powering a power converter switch driver with power obtained from an associated snubber circuit, including a first converter stage with a full bridge rectifier with a crowbar circuit creating a first ... | 06/21/2011 |
| 7855902 | DC-DC converter with voltage detection circuit for overcurrent protection In a DC-DC converter of this invention, a voltage detection circuit is connected in parallel with an output switching device, and the voltage detection circuit is put into operation a predetermined time after the output switching device is turned on. In addition, a ... | 12/21/2010 |
| 7619908 | Prognostic health monitoring in switch-mode power supplies with voltage regulation The system includes a current injection device in electrical communication with the switch mode power supply. The current injection device is positioned to alter the initial, non-zero load current when activated. A prognostic control is in communication with the cur... | 11/17/2009 |
| 7511976 | Self powered supply for power converter switch driver Self-powered supplies are presented for powering a power converter switch driver with power obtained from an associated snubber circuit, in which a supply circuit and a snubber circuit are connected in a series path across the switch terminals with the supply circui... | 03/31/2009 |
| 7443703 | Semiconductor device A semiconductor device has a semiconductor element connected to an input/output terminal and a reference voltage terminal, a first rectifier element connected between the input/output terminal and the reference voltage terminal, which performs rectifier operation to... | 10/28/2008 |
| 7440297 | Fault detection for loss of feeback in forced switching power supplies with power factor correction A device corrects the power factor in forced switching power supplies and includes a converter and a control device to obtain a regulated voltage on an output terminal. The control device comprises an error amplifier having an inverting terminal (Vout) and a non-inv... | 10/21/2008 |
| 7430131 | Start-up circuit for providing a start-up voltage to an application circuit A startup circuit for providing a startup voltage from a high voltage DC bus voltage to an application circuit including an integrated circuit package for at least a control circuit for driving at least one power switch of the application circuit; a dropping resisto... | 09/30/2008 |
| 7379310 | Over-voltage protection circuit for a switched mode power supply The switched mode power supply comprises an inductor, a switching transistor, a controller circuit coupled to the switching transistor, a rectifying means and a feedback regulation loop for providing a stabilised output voltage. It comprises further a protection cir... | 05/27/2008 |
| 7369383 | Protective circuit A protective circuit (1), particularly for overvoltage-protecting an electronic motor control unit, comprises a signal connection receiving and/or emitting an electrical signal, a switching element (4) which activates or deactivates a protective interr... | 05/06/2008 |
| 7362557 | Method, apparatus and article for bi-directional DC/DC power conversion A controller implements a state machine for operating the bi-directional power converter with a flexible load pattern while maintaining a thermal condition of the power converter within acceptable limits. The state machine implements a wait loop in response to selec... | 04/22/2008 |
| 7358700 | Induction motor controller An induction motor controller that may include three phase paths leading from a power input to a power output, a solid-state switching device interposed between the power input and the power output on each of the three phase paths, a voltage sensor coupled to two of... | 04/15/2008 |
| 7355867 | Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage Disclosed is an invention relating to a power supply for use in an apparatus for measuring electrical energy, comprising, in one embodiment, a first switching device, a device for storing electrical charge in electrical connection with the first switching device, a ... | 04/08/2008 |
| 7355866 | Method of detecting phase-loss state of three-phase power supply The disclosure relates to a method of detecting the phase-loss state of the three-phase power supply. When the phase-loss condition occurs in the input three-phase power supply of the power converter, it is determined whether the three-phase power source is in the p... | 04/08/2008 |
| 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 |
| 7337233 | Network system with TCP/IP protocol spoofing A system in which a personal computer sends messages into a TCP/IP network using a conventional dial-up link and downloads data from the TCP/IP network using a high-speed one-way satellite link. A preferred embodiment uses a conventional SLIP provider to connect to ... | 02/26/2008 |
| 7336060 | Circuit and method for controlling a DC-DC converter by enabling the synchronous rectifier during undervoltage lockout A control circuit for a DC-DC converter that prevents a deficiency from occurring due to sudden interruption in power supply. The control circuit activates and inactivates a main switching output transistor and a synchronous rectification output transistor to conver... | 02/26/2008 |
| 7337336 | Method for rapid port power reduction A method for rapidly reducing power in the event of a change in power source conditions, comprising: obtaining an indicator of one of current power consumption of ports being supplied power and current power allocation of ports being supplied power; storing for at l... | 02/26/2008 |
| 7332897 | DC-DC converter A DC-DC converter includes a main inductor connected to an input voltage, a main switching element connected in series to the main inductor, a main diode connected to the main inductor and a load, and a main capacitor connected to the main diode and the load, the DC... | 02/19/2008 |
| 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 |
| 7325063 | Apparatus, method, and system for removing ethernet header and adding second IP header An apparatus including a protocol stack, the protocol stack including an application layer, a network layer, and a physical layer, wherein the physical layer comprises a hardware interface between the apparatus and a network, wherein network-level tunnelling of a pa... | 01/29/2008 |
| 7315130 | Switching control for inverter startup and shutdown An electronic ballast circuit for a lamp is described, wherein the ballast comprises a power factor correction circuit coupled to an inverter circuit. The inverter circuit is further coupled to a trigger circuit, which is in turn operatively connected to a hot or ne... | 01/01/2008 |
| 7312965 | Aircraft applicable current imbalance detection and circuit interrupter and packaging thereof The aircraft applicable current imbalance detection and circuit interrupter interrupts an electrical circuit when a current imbalance is sensed. The current imbalance detection and circuit interrupter includes a housing, power supplies, a sensor for sensing a curren... | 12/25/2007 |
| 7309973 | Mitigation of harmonic currents and conservation of power in non-linear load systems An AC power controller system applies three-phase AC operating power to an induction motor that drives a non-linear mechanical load. A primary low pass filter is connected in series between branch phase conductors and a power controller of the type that uses gate-co... | 12/18/2007 |
| 7304456 | Input inrush current control and/or output short-circuit control to a boost converter in a power supply An electronic circuit is connected between input lines of an alternating input power supply and input lines of a boost converter to limit an input inrush current and/or an output short-circuit current supplied to the boost converter in a power supply. The electronic... | 12/04/2007 |
| 7299789 | Fuel injection timer and current regulator A fuel injector control system and method provides precise fuel injection timing while eliminating the need for a voltage regulator by estimating or predicting ramp times between voltage application and actual fuel injection. In one embodiment, an estimated ramp tim... | 11/27/2007 |
| 7301390 | Controller for ORing field effect transistor An ORing element for use in a power supply and/or power system. The ORing element may include a field effect transistor (FET), a first bi-polar transistor and a second bi-polar transistor. The FET may be electrically connected between an input and an output. The fir... | 11/27/2007 |
| 7289924 | Self-calibrating sensor A method for self-calibrating a sensor can be implemented in a system having a calibration circuit. The calibration circuit has differential circuitry which compares an output signal of the sensor with a predetermined reference signal associated with a reference pro... | 10/30/2007 |
| 7280331 | Power reconnect and voltage control In one aspect, a power connect device receives ac line voltage and provides ac load voltage to a load device. In one embodiment, the power connect device includes: a connect panel, a transformer circuit, a high voltage relay, a rectifier, and a voltage protection ci... | 10/09/2007 |
| 7274179 | Inrush current preventing circuit There is provided an inrush current preventing circuit. The circuit comprises an voltage-controlled type switching device that has an input terminal, an output terminal and a control terminal that limits current between the input terminal and the output terminal by ... | 09/25/2007 |
