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| Number | Title | Issue Date |
| 8030908 | Control method for multi-phase DC-DC controller and multi-phase DC-DC controller A multi-phase DC-DC controller. The multi-phase DC-DC controller comprises converter channels, a channel control device and a power control device. Each converter channel comprises a switch device, a first output node and an inductor coupled between the switch devic... | 10/04/2011 |
| 7982441 | Converter circuit A multiphase converter comprising a plurality of converter circuits, each converter circuit having series connected high and low side switches connected across a voltage bus with a common node provided therebetween, each of the common nodes connected through a respe... | 07/19/2011 |
| 7389087 | Adaptive radio transceiver with filtering An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 06/17/2008 |
| 7368836 | Volt-second synchronization for magnetic loads A method and device for connecting a load to an AC power source is arranged to ensure that the volt-second ratings of magnetic devices in the load are not exceeded, in order to limit in-rush currents resulting from saturation of the magnetic devices. In the case whe... | 05/06/2008 |
| 7368895 | Apparatus for a power supply with brownout protection and the protecting method for the same An apparatus for a power supply with brownout protection and the method thereof are proposed. As a brownout condition occurs, the apparatus informs at least one microprocessor to process the shutdown process timely. The apparatus includes a power factor correction (... | 05/06/2008 |
| 7364606 | Exhaust emission control device Provided are a hollow inner electrode constituted by an electrically conductive filter capable of capturing particulates, a cylindrical outer electrode circumferentially surrounding the electrode, a housing incorporated in a flow passage of exhaust and accommodating... | 04/29/2008 |
| 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 |
| 7342764 | 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... | 03/11/2008 |
| 7341481 | Power control circuit The present invention provides for a highly reliable circuit, suitable for controlling the delivery of electrical power to a second electrical outlet, based on the power consumption of a first outlet. This circuit has application in home, small workshops and on job-... | 03/11/2008 |
| 7339361 | Multi-phase DC-DC converter using auxiliary resistor network to feed back multiple single-ended sensed currents to supervisory controller for balanced current-sharing among plural channels A multi-phase DC-DC converter incorporates auxiliary resistor networks to feed back to the converter's supervisory controller voltages representative of secondary sensed currents associated with primary currents sensed relative to the common nodes of the respective ... | 03/04/2008 |
| 7339331 | Dimmer circuit with improved ripple control A dimmer circuit arrangement is disclosed including a second control circuit for controlling the operation of a triac for delivering current to a load, and a first control circuit for controlling the operation of an IGBT power semiconductor switch for controlling th... | 03/04/2008 |
| 7327173 | Delay-locked loop having a pre-shift phase detector A clock generator for generating an output clock signal synchronized with an input clock signal having first and second adjustable delay lines. The first adjustable delay lines is adjusted following initialization of the clock generator to expedite obtaining a lock ... | 02/05/2008 |
| 7313210 | System and method for establishing a known timing relationship between two clock signals A system and method for establishing a known timing relationship between two clock signals, wherein a first clock signal is operable to clock data transfer operations from a transmitter domain to a receiver domain and a second clock signal is operable to be transpor... | 12/25/2007 |
| 7313465 | System and method for managing energy generation equipment A system and method for controlling distributed generation equipment based on remotely derived dispatch schemes improves economics and reliability of operation. The system can adapt to variable changing conditions in real-time to provide adaptable, real-time, site-s... | 12/25/2007 |
| 7292014 | Controller and loading system thereof A loading system and a controller thereof are disclosed. The controller includes an adjustable triangle wave generator, an error signal generator, and a pulse signal generator. The triangle-wave generator is adapted to perform an amplitude and frequency operation ac... | 11/06/2007 |
| 7283344 | Electronic switch In an electronic switch which includes a pair of terminal portions 14, 14, and self arc-suppressing elements Q21, Q22 having a one-way on and off control construction connected in inverse-series between the pair of terminal portions and which tu... | 10/16/2007 |
| 7279871 | Voltage regulator and method of regulating voltage A voltage regulator is configured to regulate an alternating current source provided to a model toy railroad layout. The voltage regulator delivers a substantially constant voltage level to the features and accessories drawing power from the third rail of the railro... | 10/09/2007 |
| 7279938 | Delay chain integrated circuits having binary-weighted delay chain units with built-in phase comparators therein Delay-locked loop integrated circuits include a delay chain having a plurality of delay chain units. The delay chain may be a binary-weighted delay chain and the delay chain units may be arranged in ascending or descending order (e.g., x1, x2, x4, x8, . . . ) accord... | 10/09/2007 |
| 7276952 | Clock signal generation using digital frequency synthesizer A method of generating a clock signal using a digital frequency synthesizer includes providing a base clock to the digital frequency synthesizer, comparing a phase of an output clock from the digital frequency synthesizer with a phase of a reference signal, and issu... | 10/02/2007 |
| 7274181 | Systems, multiphase power converters with droop-control circuitry and methods Droop-control circuitry of a multiphase power converter determines when multiphase switching signals are concurrently at either a high or low state and temporarily clamps the output of the power converter to either a high or low voltage level in response thereto. | 09/25/2007 |
| 7274243 | Adaptive gate drive for switching devices of inverter An adaptive gate drive for an inverter includes control circuitry having a Field Programmable Gate Array (FPGA) and includes power circuitry having a plurality of FETs for operating a switching device, such as a Trench Gate Insulated Gate Bipolar Transistor (IGBT de... | 09/25/2007 |
| 7271566 | Method and system for managing the voltage on the DC bus of a speed controller for an AC motor A method and system for managing the voltage of a DC bus of a speed controller for an AC electric motor linked to a current distribution network. The method includes comparing a value of the voltage measured on the DC bus with a determined limit value, when the valu... | 09/18/2007 |
| 7271550 | Dimmer circuit arrangement A dimmer circuit arrangement is disclosed including a second control circuit (40) for controlling the operation of a triac (50) for delivering current to a load (60), and a first control circuit (10) for controlling the operation of an IG... | 09/18/2007 |
| 7259407 | Isolated HF-control SCR switch A vertical SCR switch to be controlled by a high-frequency signal having at least four main alternated layers. The switch includes a gate terminal and a gate reference terminal connected via integrated capacitors to corresponding areas. In the case of a thyristor, h... | 08/21/2007 |
| 7258723 | Particulate filter assembly and associated method A particulate filter assembly includes an electrode assembly, a particulate filter positioned in an electrode gap defined between two electrodes of the electrode assembly, a power supply electrically coupled to the electrode assembly, and a controller for controllin... | 08/21/2007 |
| 7259524 | Apparatus and methods for regulating delivery of electrical energy Apparatus and methods for regulating delivery of electrical energy to a lighting load are disclosed. An electrical waveform is received from a source of electrical energy. An integration value is generated based on a square of an amplitude of the received waveform. ... | 08/21/2007 |
| 7259527 | Stepped dimming ballast for fluorescent lamps A stepped dimming ballast comprising a filter and rectifier circuit (1), a DC high voltage stabilizing circuit (2), a frequency control and switch circuit (3), a load current feedback circuit (5), a voltage signal processing circuit (6... | 08/21/2007 |
| 7245095 | Control circuit of rotational speed of a fan A control circuit of rotational speed of a fan is provided, wherein by a switching of a switch unit, a PWM (Pulse Wide Modulation) unit can output a sampling pulse whose period is changing. A voltage is also changing following the period after taking a sample to an ... | 07/17/2007 |
| 7242563 | Reverse phase control power switching circuit with overload protection In one embodiment of the invention, a reverse phase control power switching circuit for controlling the flow of current through a load from an AC source comprises a sensing bridge in series with the load and the AC source. The conductive state of the sensing bridge ... | 07/10/2007 |
| 7239575 | Delay-locked loop having a pre-shift phase detector A clock generator for generating an output clock signal synchronized with an input clock signal having first and second adjustable delay lines. The first adjustable delay lines is adjusted following initialization of the clock generator to expedite obtaining a lock ... | 07/03/2007 |
| 7233772 | Adaptive radio transceiver with filtering An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 06/19/2007 |
| 7224151 | Fixed phase power controller with analog trigger A fixed phase power controller that converts a line voltage to an RMS load voltage includes an analog control block with a capacitor that receives an input that is independent of a change in magnitude of the line voltage and that charges and discharges to provide a ... | 05/29/2007 |
| 7221106 | Cordset based appliance controller An apparatus and method for distributed control of an electrical appliance having a plug and a load and two power carrying conductors connecting the plug to the load, comprising locating power control elements completely within the plug, connecting interface element... | 05/22/2007 |
| 7208921 | DC-DC regulator with switching frequency responsive to load A switch mode power supply in which the switching frequency is controlled by an oscillator having a nominal frequency, and having an error amplifier to provide an output signal which represents departure of the power supply output from a nominal value, and which fun... | 04/24/2007 |
| 7203126 | Integrated circuit systems and devices having high precision digital delay lines therein An integrated circuit delay device includes a digital delay line configured to provide a percent-of-clock period delay to a timing signal received at an input thereof, in response to a control signal. This control signal has a value that specifies a length of the de... | 04/10/2007 |
| 7200017 | Controller and driving method for supplying energy to display device circuitry A controller for controlling at least two power circuits comprises a phase-shift selector for generating a reference signal according to variable input signals, the reference signal is programmed to indicate an amount of phase-delay according to a number of CCFL pow... | 04/03/2007 |
| 7193401 | Control circuit and control method for DC-DC converter It is an object of the present invention to provide a control circuit and a control method for a current mode control type DC—DC converter capable of preventing a subharmonic oscillation even if an on-duty is not less than 50% and capable of preventing a switching... | 03/20/2007 |
| 7190210 | Switched-capacitor power supply system and method A plurality of thin-film capacitors are grouped in phases. A control circuit switches each phase between charging and discharging states devised to supply one or more loads with controlled power. ... | 03/13/2007 |
| 7173408 | Adjustable regulated power device An adjustable regulated power device includes, for example, an electronic potential device, a regulated device and a control device. The electronic potential device includes an electronic potentiometer having a plurality of potentiometers. The regulated device inclu... | 02/06/2007 |
| 7161335 | Adaptive bus voltage positioning for two-stage voltage regulators Alteration of voltage input to a voltage regulator output stage from a Vbus regulator stage in a two-stage voltage regulator provides optimal Vbus voltage placement for a wide range of current loads to increase voltage regulator efficiency and ... | 01/09/2007 |
