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| Number | Title | Issue Date |
| RE43177 | Apparatus and method for preventing an electrical backfeed At least one aspect is directed to a transfer switch including a first input to couple a first multiphase low voltage electrical supply to the transfer switch, and a second input to couple a second multiphase low voltage electrical supply to the transfer switch. The... | 02/14/2012 |
| 8115345 | Variable timing switching system and method A low-EMI switched circuit comprises two or more switches, wherein impedance transitions of the switches are overlapped and the overlap is varied using variable switch timing based on an output power level of the switched circuit. The variable timing results in a va... | 02/14/2012 |
| 8093762 | Semiconductor integrated circuit device In a power phase period when in normal operation, switch portions SW2H and SW2L and switch portions SW3H and SW3L are turned ON, respectively, and switch portions SW1H and SW1L are turned OFF. And floating power supply is pr... | 01/10/2012 |
| 8053934 | Semiconductor integrated circuit device having control circuit to selectively activate decoupling cells The semiconductor integrated circuit device includes a plurality of decoupling cells that suppress power noise respectively, a plurality of power switches that connect the decoupling cells to a power line respectively, and a control circuit that controls the number ... | 11/08/2011 |
| 8049372 | Precharging a high-voltage bus using a voltage-regulated power supply Systems and methods are provided for precharging high-voltage buses. The precharge system comprises an energy source having a first terminal and a second terminal, wherein a first voltage is equal to a potential difference between the first terminal and the second t... | 11/01/2011 |
| 8044540 | Systems and methods for a SPDT switch or SPMT switch with transformer A SPDT or SPMT switch may include a transformer having a primary winding and a secondary winding, where a first end of the secondary winding is connected to a single pole port, where a first end of the primary winding is connected to a first throw port; a first swit... | 10/25/2011 |
| 7989988 | Semiconductor integrated circuit device In a power phase period when in normal operation, switch portions SW2H and SW2L and switch portions SW3H and SW3L are turned ON, respectively, and switch portions SW1H and SW1L are turned OFF. And floating power supply is pr... | 08/02/2011 |
| 7982341 | Transformer operation control apparatus and method for suppressing magnetizing inrush current A control portion 80 for a breaker 10 causes the breaker 10 to apply a current of a first apply phase (R phase) at a timing where a residual flux of R phase agrees with a steady magnetic flux. Thereafter, the control portion 80 determines... | 07/19/2011 |
| 7977822 | Dynamically changing control of sequenced power gating Power control circuitry for controlling connection of a voltage source to a switched power rail powering an associated circuit is provided. A plurality of switch blocks are connected in parallel between the switched power rail and the voltage source, each switch blo... | 07/12/2011 |
| 7973432 | Microscope system and control method for same The microscope system comprises: an imaging apparatus used for picking up an image of a specimen; an electric unit; a control apparatus for controlling turning On and Off of the power supply to the electric unit; a storage apparatus storing the initialization requir... | 07/05/2011 |
| 7973431 | Circuit arrangement for locking and/or unlocking a door lock, especially in an electric appliance A circuit arrangement for locking and/or unlocking a door lock, especially in an electric appliance that is provided with a door for closing or opening a work area. Said circuit arrangement comprises an electrically actuated door lock actuator which acts upon a lock... | 07/05/2011 |
| 7928607 | Aircraft power system and apparatus for supplying power to an aircraft electrical system An aircraft power system is provided having an aircraft power supply and a bidirectional switch. The aircraft power supply includes an alternator, a battery and a load. The bidirectional switch is coupled between one of the alternator and the battery, and the load. ... | 04/19/2011 |
| 7911086 | Switching circuit, signal output device and test apparatus A signal output device that outputs an output signal according to an input signal expressing a logical value that includes a high-voltage side switching circuit between a first terminal and a second terminal in accordance with a first control signal. The device incl... | 03/22/2011 |
| 7906874 | Method and circuit for managing start-up phase of at least a micro fuel cell to be connected to a load A managing method of the start-up phase of at least one micro fuel cell to be connected to a load includes: measuring a micro fuel cell voltage value across the micro fuel cell activated by means of a fuel injection; comparing the micro fuel cell voltage value with ... | 03/15/2011 |
| 7880339 | Isolation circuitry and method for hiding a power consumption characteristic of an associated processing circuit An isolation circuitry and method are provided for coupling between a power supply and processing circuitry in order to provide power to the processing circuitry whilst hiding a power consumption characteristic of that processing circuitry. The isolation circuitry c... | 02/01/2011 |
| 7859135 | Internal power supply circuit having a cascode current mirror circuit A current mirror circuit which is connected to first and second power supplies and generates a desired current, has a plurality of first transistors which are connected in parallel to the first power supply side and the gates of which are connected to a common node,... | 12/28/2010 |
| 7834483 | Energy harvesting system and method using multiple energy sources An energy harvesting system and method having improved efficiency. A primary energy harvesting device is used to generate a first electrical output signal. The first electrical output signal is applied to a first switching circuit. A secondary energy harvesting devi... | 11/16/2010 |
| 7830041 | Automatically standby power cut-off plug socket An electric socket is provided. The socket includes a power saving circuit determining operation status of an electronic apparatus or plural electronic apparatus connected to another electric socket according to a load signal to control to supply or automatically in... | 11/09/2010 |
| 7750509 | Power tool lockdown device Disclosed is an apparatus for selectively permitting electricity to flow to a power tool having a power cord. The apparatus comprises a body having an exterior surface and having a passage therethrough. The passage contains an electrical relay having an electrical i... | 07/06/2010 |
| 7745957 | Combination task lamp and flash light A single combination task lamp and flashlight instrument, providing separate flood and spot light beams, independently controlled in a three-state sequence by simple push button switches. The two kinds of light beams are produced by separate arrays of compact light ... | 06/29/2010 |
| 7732946 | Current source, control device and method for operating said control device A current source includes a first switching element configured to adjust an output current according to a control signal received at a control input. The current source also includes a reference resistance, which is electrically coupled to the first switching elemen... | 06/08/2010 |
| 7723868 | Operating switch wiring device and handle member therefor An operating switch wiring device capable of easily setting a load which is a group control object, without using a dedicated setter, and a handle member used therefore. The operating switch wiring device used for a remote supervisory control system includes a plura... | 05/25/2010 |
| 7719141 | Electronic switch network Systems and methods for switching electronic signals are disclosed. The switching may be performed with a low loss and low peak voltages. The switching scheme is suitable for switching RF signals, for example, and may be used in devices such as wireless systems, ter... | 05/18/2010 |
| 7671490 | System for high reliability power distribution within an electronics equipment cabinet The power conversion system allows for multiple segregated and ground independent power sources to provide redundant power to modules within an electronics equipment cabinet with increased reliability and reduced sensitivity to common fault propagation. The power co... | 03/02/2010 |
| 7638901 | Operating switch wiring device and handle member therefor An operating switch wiring device capable of easily setting a load which is a group control object, without using a dedicated setter, and a handle member used therefore. The operating switch wiring device used for a remote supervisory control system includes a plura... | 12/29/2009 |
| 7598628 | Automated bypass method and apparatus An arrangement that provides power to an electrical device includes an inverter, first and second switches, and a bypass controller. The first switch has open and closed positions, and is operable to connect the inverter to the electrical device when in the closed p... | 10/06/2009 |
| 7582989 | Safety relay having independently testable contacts Methods, apparatus, and articles of manufacture related to safety relays having independently testable relay contacts are disclosed. In one disclosed example, a safety relay includes a plurality of relay coils, each of which is coupled in parallel to a first node vi... | 09/01/2009 |
| 7576450 | Regulated alternating current power supply An exemplary regulated AC power supply comprising a three phase AC power source; a first switch having two input terminals arranged for receiving a first phase and a second phase of the three phase AC power source respectively, and an output terminal selectively con... | 08/18/2009 |
| 7564150 | Control device for an electrical appliance and control method A control device for an electric hob has a control element placed on a support. Circular ring segmental surfaces are provided as signal generators beneath the support. On the top side and underside, the control element has numerous electrically interconnected, circu... | 07/21/2009 |
| 7547993 | Radiofrequency double pole single throw switch A double pole single throw (DPST) switch circuit including a first circuit portion corresponding to a first input port, a second circuit portion corresponding to a second input port, and an output port, wherein each of the first and second circuit portions include a... | 06/16/2009 |
| 7535127 | Solid state relay driver The present invention is a solid state relay having improved high speed turn on and lower heat dissipation of the power transistor. It uses a voltage level converter and AC-DC converter to provide a control input to an isolation transformer primary. The secondary of... | 05/19/2009 |
| 7535129 | Method and apparatus for transfer of a critical load from one source to a back up source using magnetically latched relays An automatic transfer switch includes first and second magnetically latched relays that respectively connect first and second voltage sources to a critical load. The first and second relays are magnetically latched in their respective opened or closed positions by a... | 05/19/2009 |
| 7535128 | Temperature detector A temperature detector for outputting a temperature signal comprises: a temperature sensing diode formed on the same chip as a semiconductor switching device and having a specific temperature vs. voltage characteristic, wherein the temperature detector outputs the a... | 05/19/2009 |
| 7504746 | Differential load driver circuits A differential driving circuit is provided that reduces ripple current. The differential driving circuit is operable to supply a linear current in a low current mode and a PWM current in a high current mode. Depending on the direction of current flow through the loa... | 03/17/2009 |
| 7492063 | Method of using a single pole single throw switch to provide three operative states A method of using a single pole, single throw switch having normally open contacts in a conductive path in a non-intuitive manner in an electric circuit to sequentially provide three operable states including latched engagement (path closed, circuit OFF), momentary ... | 02/17/2009 |
| 7446437 | Apparatus and method for preventing an electrical backfeed At least one aspect is directed to a transfer switch including a first input to couple a first multiphase low voltage electrical supply to the transfer switch, and a second input to couple a second multiphase low voltage electrical supply to the transfer switch. The... | 11/04/2008 |
| 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 |
| 7378760 | Barrier movement operator with controlled power outlet A barrier movement operator having an integrated mains voltage connection with a selective connection of power to an accessory such as a light is disclosed. ... | 05/27/2008 |
| 7375951 | Load control device having a split enclosure A load control device is operable to receive a first control signal having a first magnitude and to generate a second control signal having a second magnitude. The load control device is adapted to be installed in an electrical wallbox having a barrier. The load con... | 05/20/2008 |
| 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 |
