Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8183718 | Method and device for controlled reclosing of a circuit breaker A method for controlled reclosing of branch elements in an electric power system that has been subjected to a disturbance and that includes at least one branch element and at least one circuit breaker connected thereto. The angular difference between voltage vectors... | 05/22/2012 |
| 8089181 | System and method to measure load type and exclude the human body model A system and method for controlling connection of an electrical outlet to a power source so as to exclude the human body model. A first signal is generated and fed to the outlet through an outlet control device; feedback from a load at the outlet is detected. The lo... | 01/03/2012 |
| 8084891 | Method and apparatus for optimizing synchronous switching operations in power systems A method and an apparatus for optimizing switching operations executed by a switching device coupled to an AC power line, wherein signals related to the waveform of the electrical phases of the power line are acquired. When a command for executing a switching operat... | 12/27/2011 |
| 8080904 | Power supply and night vision device using the power supply Disclosed is a power supply (40) and a night vision device using the power supply (40). The power supply (40) comprises a battery (41), a power switch (42), a booster (43) for boosting a battery voltage provided by the batte... | 12/20/2011 |
| 8058750 | Discharge cycle communication In one embodiment, a system may be provided that includes a circuit that is electrically coupled to a line. The circuit generates a direct current signal on the line, where the direct current signal has a period that includes a charge cycle and a discharge cycle. Th... | 11/15/2011 |
| 8004122 | Bootstrap supply for switched mode power converter A power converter controller is operable to control power provided to a load circuit coupled between a first voltage supply terminal and a first switching element by controlling the first switching element and to control power provided to an energy storage element c... | 08/23/2011 |
| 7982342 | Fuel cell power management system and anti-islanding method in the power management system A fuel cell power management system and an anti-islanding method using the power management system. The power management system includes a fuel cell to generate direct current (DC) power, a power conditioning system (PCS) to generate alternating current (AC) power f... | 07/19/2011 |
| 7855475 | Movable barrier operator with energy management control and corresponding method A movable barrier operator system wherein one or more of the various components of the system is configured to operate selectively in at least either of two operational modes. Each operating mode is characterized by a corresponding energy usage profile. The operatio... | 12/21/2010 |
| 7804201 | Portable remote switch operator system A portable remote switch operator system for temporarily connecting an actuator near a switch for operating the switch. The system further contemplates using a portable remote switch operator for temporarily connecting an operator or a human, to engage a switch that... | 09/28/2010 |
| 7791226 | Bidirectional connection between a digital control circuit and an AC switch A method and a circuit for controlling a switch intended to apply an AC signal, by application of a control signal on a terminal of a circuit, at least one signal of information as to the state of the switch or of a load that it controls being provided to said termi... | 09/07/2010 |
| 7772723 | Electrical panel having electrically isolated neutral stab An electrical panel is operable to receive electrical power from a first power supply and a second power supply. The electrical panel includes a neutral bus conductor having a stab configured to engage one or more switching devices and a separation formed in a bus c... | 08/10/2010 |
| 7755220 | Power stealing for a thermostat using a TRIAC with FET control An electronic thermostat circuit has improved power stealing for controlling an AC control device. The circuit comprises a source of AC control power coupled to an electronic switch means having an electronic switch means control input. The electronic switch means c... | 07/13/2010 |
| 7723870 | Power switch system A power switch system (200) for selectively providing power from a primary power source and a secondary power source to an electronic device, includes a detecting module (24), and a selecting module (30). The detecting module is connected to the... | 05/25/2010 |
| 7696647 | Coupling node A coupling node for regulating the current flow between two or more drives is described. The coupling node may include an interconnect circuit in communication with the drives for selectively opening the connection between the drives. A sensor circuit in communicati... | 04/13/2010 |
| 7696648 | Incoming current suppression device A control unit of an electric power supply system causes, responsive to a closing command signal, a switch corresponding to R phase to be thrown at a timing when a stationary magnetic flux and a residual magnetic flux of R phase are coincident with each other and th... | 04/13/2010 |
| 7692337 | Switching circuit and a method of operation thereof This invention relates to a switching circuit, such as a bridge circuit, comprising first and second switches operable to produce an electrical signal at the output of the switching circuit at certain voltages. Moreover, this invention also relates to a method of op... | 04/06/2010 |
| 7675199 | Disconnection detecting circuit In a disconnection detecting mode, first and second MOSFETs are turned off, a transistor is turned on, and charges of a capacitor are initialized. After that, third and fourth MOSFETs are alternately turned on/off by drive signals and having a complementary relation... | 03/09/2010 |
| 7642675 | Multi-purpose switch activated system and method for using same According to one embodiment, a system with a multi-purpose switch for providing a power on function and other functions to a user comprises a temporary power control circuit configured to be coupled to and decoupled from a power source by the multi-purpose switch. T... | 01/05/2010 |
| 7471015 | Electronic apparatus controlling an electric power supply to a main microprocessor and peripheral devices through an auxiliary microprocessor In an electronic apparatus such as a DVD recorder (1) which controls electric power supply to a main micro processor (3) and peripheral devices (10, 11, 15) with a auxiliary micro processor (4), a power control method by the auxiliary mic... | 12/30/2008 |
| 7449800 | Power control system A power control system for use in an electronic device provided with a transforming module becoming self-contained upon connection with a power supply includes a switch module, a delay module, and a control module. The switch module turns on or off a power input rou... | 11/11/2008 |
| 7446438 | Power control circuit A power control circuit includes an electronic switch (20) interposed between a power unit (10) and an electronic device (30), a driving circuit (40) and a mechanical switch (50). The driving circuit receives a power-on signal from... | 11/04/2008 |
| 7439706 | Battery determination system for battery-powered devices This system provides a method for determining whether ordinary battery cells, a battery pack, and/or a charger unit are attached to a portable electronic device. The system provides a center contact in a battery shaft that contacts a battery pack or a point on an in... | 10/21/2008 |
| 7417339 | Fast transition power supply A power supply includes at least one current source for providing current and a reference voltage generator for providing a first reference voltage and a second reference voltage. A control circuit selectively couples the current to the power supply output as a func... | 08/26/2008 |
| 7403135 | Capacitive relay takeoff swimming platform sensor system A capacitive relay takeoff swimming platform sensor system including multiple stations, timing devices and capacitive sensor devices where the presence or departure of a second swimmer on a relay takeoff swimming platform is sensed by the change in capacitance of a ... | 07/22/2008 |
| 7397384 | Track lighting system current limiting device A current limiting system in accordance with the present invention comprises an accessory or canopy mount device that is permanently installed between a source of electrical power 1 and a track lighting system 2. The system may be installed integrally ... | 07/08/2008 |
| 7391134 | Electrical safety lockout mechanism for power tools and other hazardous machinery An improved electrical lockout mechanism includes a first connection means to a power source, and a second connection means to the power input terminal of the machine being protected. The machine being protected includes a manually-operated ON/OFF switch. A switchin... | 06/24/2008 |
| 7391133 | Hybrid switch An electrical switching topology for a hybrid switch provides extremely low losses in both cryogenic and non-cryogenic electronic systems. In this switch having switch modules connected in parallel, switching losses in a first module are separated from conduction lo... | 06/24/2008 |
| 7382065 | Circuit for controlling inductive loads, in particular of electro actuators, at high efficiency The control circuit comprises a source of dc voltage, a first electronic switch, interposed between a first terminal of the voltage source and a corresponding first terminal of the load, a second electronic switch, interposed between the other or second terminal of ... | 06/03/2008 |
| 7372281 | Capacitance type sensor A displacement electrode cooperates with four switch electrodes on a substrate to form respective switches SW1 to SW4. When all of the switches SW1 to SW4 are on, no X- and Y-axial outputs are activated and only a Z-axial output is activa... | 05/13/2008 |
| 7369921 | Power distribution expert system A power distribution expert system is provided to determine an optimal power distribution configuration, and also to determine an optimal transition path to reach said optimal configuration. An exemplary first set of rules is provided to determine an optimal power d... | 05/06/2008 |
| 7369377 | Snubbers for low temperature power electronics Switching losses and conduction losses are isolated by networks which are partially cryogenic and partially at room temperature. Switching losses are independent of temperature. Advantageously the switching losses are taken in a snubber network at room temperature a... | 05/06/2008 |
| 7364084 | Integrated circuits with persistent data storage The circuitry introduced in this invention selectively slows down the functioning of an electronic circuit by maintaining a particular state for a prolonged period of time. This circuitry is used not only to achieve the desired effect in maintaining security from el... | 04/29/2008 |
| 7365453 | Aqueous solution plate control system and method A system for controlling the operation of conductive plates immersed in an aqueous solution, such as in water treatment applications. The system allows independent control of the current sourced or sunk by each of a plurality of plates. The system also allows each p... | 04/29/2008 |
| 7366922 | Power control for gaming machine When an alternating-current power is supplied to an ATX power supply, sub power is supplied to a PC board from the ATX power supply. When the sub power is supplied to the PC board, a PWOK signal is output to the ATX power supply by processing performed by a CPU acco... | 04/29/2008 |
| 7366950 | Information processing apparatus with resume function and information processing system An information processing apparatus having a resume function which can maintain the security even when a plurality of users commonly use the apparatus. A work state at a power-off time of the apparatus is preserved together with a work state name including a user's ... | 04/29/2008 |
| 7361061 | Ear-jack of portable terminal An ear-jack of a portable terminal according to an embodiment includes a body having a passage into which a plug can be inserted; a first speaker terminal disposed at the passage of the body, for electrical connection with the plug; a second speaker terminal dispose... | 04/22/2008 |
| 7363175 | Query based electronic battery tester An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined base... | 04/22/2008 |
| 7363518 | Information handling system with power fault protection circuit An information handling system (IHS) employs a power fault protection circuit to protect the IHS from overvoltages which may occur on an information line from a power adapter to the IHS. The system includes a processor coupled to the protection circuit. The circuit ... | 04/22/2008 |
| 7362213 | Method and apparatus for remotely controlling a plurality of devices Disclosed is a method for controlling usage times for at least one device, including the steps of: (a) identifying a device to be controlled; (b) utilizing the device by a user; (c) tracking a device usage value for the device as the user utilizes the device; and (d... | 04/22/2008 |
| 7358627 | Electronic control systems and methods An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collec... | 04/15/2008 |
