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Patent # Description
US-8,138,705 Circuit arrangement and method for controlling an electric load
A circuit arrangement for controlling an electrical load is provided with a bridge circuit which comprises four electronic switches with the load arranged in a...
US-8,138,704 Methods and systems for detecting current sensor error
Methods and systems are provided for controlling an electric motor in a vehicle. A method comprises measuring current associated with a first phase of the...
US-8,138,703 Method and apparatus for constraining output torque in a hybrid powertrain system
A powertrain system includes a transmission operative to transfer power between an engine coupled to an input member and a plurality of torque machines and an...
US-8,138,702 Control method and motorstarter device
A method for controlling an electric motor with a softstarter. A softstarter device for control of electric motors. Motor torque is controlled in dependence of...
US-8,138,701 Method for determining the position of a rotor of an electric motor without sensors
Disclosed is a method for detecting the current position of a rotor, in particular the angle of rotation of the rotor, an electromotor and a method for...
US-8,138,700 Synchronous rectification device and synchronous electric machine implementing the device
The invention pertains to a synchronous rectification device (10) of the H-bridge type supplying a coil (5) of a phase of a synchronous machine, comprising four...
US-8,138,699 Power control system for vehicle disk motor
A brushless D.C. disk motor has one or more disk rotor assemblies and pairs of stator assemblies for each rotor assembly. Each disk rotor assembly has a disk...
US-8,138,698 Motor rotation irregularity detection circuit
A motor rotation irregularity detection circuit includes a first integrator for integrating a rotation detection signal that is output from a driver of a...
US-8,138,697 Sensorless speed detection during zero vector
A speed estimation method for determining the speed of a sensorless permanent magnet brushless motor having one or more phases driven by one or more stages of...
US-8,138,696 Dipolar axial compression permanent magnet motor
The present invention relates to a system and a method for improving the use of energy in an electric motor by inducing currents generated from magnets that...
US-8,138,695 Series electric engine power drive with rheostat and battery feedback
The motor generator set described here has unique circuitry which allows for the combined electrical output of two generators to be paired up with one another...
US-8,138,694 Bidirectional buck-boost power converters
A bidirectional buck-boost power converter 13 including a pair of inverter modules 14, 15 disposed at an output of a machine, and an inductor L.sub.o connected...
US-8,138,693 Vibration isolation control system
A computing unit simulates an ideal operation of a vibration excitation actuator by using at least a model operation parameter and the vibration-excitation...
US-8,138,692 Epicyclotron
A magnetic field crosses non-uniform rotating electric radial fields which are generated between a central electrode and a series of circumferential outer...
US-8,138,691 Multi-channel driving circuit and driving method thereof
A driving method of a multi-channel driving circuit includes: receiving multiple driving signals corresponding to multiple to-be-driven elements, providing...
US-8,138,690 LED-based lighting methods, apparatus, and systems employing LED light bars, occupancy sensing, local state...
In embodiments of the present invention, a method and system is provided for designing improved intelligent, LED-based lighting systems. The LED based lighting...
US-8,138,689 Lighting control console for controlling a lighting system
Embodiments of the invention relate to a lighting control console for controlling a lighting system, wherein digital control commands are generated in the...
US-8,138,688 Half-bridge power converter for driving LED by series-resonant connection of inductor, inductor and capacitor
Disclosed herein is an LLC half-bridge power converter for driving an LED, which uses a CMOS timer IC having 50% duty cycle and a usable frequency range of 50...
US-8,138,687 Multicolor lighting system
A system for displaying multiple colors individually or in combination with one another. The system may emit red, green and blue light from light emitting...
US-8,138,686 Current regulator and method for efficiency improvement of a LED display system
For efficiency improvement of a LED display system including a charge pump and a LED connected to either the voltage input terminal or the voltage output...
US-8,138,685 Power converting circuit and controller thereof
A controller which receives electric power required for operating through a driving voltage terminal and controls a converting circuit to convert an input...
US-8,138,684 Discharge lamp lighting device, control method thereof, and projector
A discharge lamp lighting device includes: a power control circuit outputting DC current; an AC conversion circuit being supplied with the DC current and...
US-8,138,683 Method for controlling a series circuit current of a lighting installation at an airfield or the like, and a...
Disclosed is a method for controlling a series circuit current of a lighting installation at an airfield or the like, in which case the series circuit current...
US-8,138,682 Symmetrical RF power supply for inductively coupled electrodeless lamps
A radio frequency (RF) power supply for an electrodeless lamp includes a pair of DC rails, an RF inverter having power input terminals connected between the...
US-8,138,681 Driving circuit, LED head and image forming apparatus
In a driving circuit, a drive transistor supplies drive electric current to record elements to construct an array, and a reference electric current generating...
US-8,138,680 Light string with external resistor unit
An LED light string including a first loop, which further includes a first plurality of LEDs in series successively connected by first connecting wires, and at...
US-8,138,679 Organic electroluminescent light emitting device for restoring normal operation after low-voltage errors
Provision of a light emitting device having functionality for restoring to normal even if a low-voltage error occurs, by temporarily applying a reverse current...
US-8,138,678 Charged particle beam decelerating device and method, and X-ray generating apparatus using the same
A charged particle beam decelerating device includes a high-frequency cavity 34 provided on an orbit of a charged particle beam 1, and a phase synchronizing...
US-8,138,677 Radial hall effect ion injector with a split solenoid field
A closed drift Hall Current accelerator with a split solenoid Hall field, a radial injection collimated gas source, an anode, intermediate Hall effect...
US-8,138,676 Methods and systems for dimmable fluorescent lighting using multiple frequencies
A system for operating a fluorescent light is provided. The system comprises: a fluorescent lamp with at least one electrode having at least one corresponding...
US-8,138,675 Stabilized emissive structures and methods of making
An emitter is disclosed. The emitter includes a base layer comprising an array of nanocavities on an emission surface of the base layer, wherein facets of the...
US-8,138,674 Phosphor layer and plasma display panel using the same
A plasma display panel has heights of barrier ribs prevented from abnormally increasing at positions where a phosphor dispensing process starts and ends,...
US-8,138,673 Radiation shielding
Apparatus and method using a gas discharge device for shielding an object and/or person from electromagnetic (EM) radiation including radar, microwaves, X-rays,...
US-8,138,672 Lamps with replaceable covers
A lamp includes a main body and a removable cover, and the main body includes a lamp housing, a printed circuit board (PCB), at least one light emitting...
US-8,138,671 Color-stable phosphor converted LED
A light-emitting device is provided, comprising at least one light-emitting diode (100) for emitting light of a first color and a luminescent material (102)...
US-8,138,670 Light-emitting device and method of manufacturing the same, and method of operating manufacturing apparatus
The inventors have anticipated that there is no problem in employing electron gun deposition as a method of forming a metallic layer on an EL layer of an active...
US-8,138,669 Double-emission organic light emitting diode display device
A double-emission organic light emitting diode (OLED) display device to display images on both sides includes two substrates each having an ...
US-8,138,668 Benzo[a]fluoranthene compound and organic light emitting device using the same
There is provided a benzo[a]fluoranthene compound represented by the following general formula (I): wherein at least one of R.sub.14, R.sub.15, R.sub.16,...
US-8,138,667 Light emitting device having metal oxide layer and color filter
It is an object of the present invention to provide a light-emitting device that is high in color purity of light and is high in light extraction efficiency,...
US-8,138,666 Wavelength conversion member and light-emitting device
There are provided a wavelength conversion member including phosphors made of phosphor particles which are made of an oxynitride and/or a nitride and have a...
US-8,138,665 Liquid metal wetting of micro-fabricated charge-emission structures
Described is a micro-fabricated charged particle emission device including a substrate and a plurality of charged particle emission sites formed in the...
US-8,138,664 Bi-silicate matrix coating for a display
A display screen of a color display is disclosed (see FIG. 1). The display screen includes a glass plate having an array of three different color-emitting...
US-8,138,663 Light emitting device and method of manufacturing the same
The present invention provides a light emitting device solving weakness caused by bonding between first and second light emitting elements and a method of...
US-8,138,662 Electrode for a discharge lamp
An electrode for a discharge lamp (I) with a core (11) and a sheath (12), which surrounds at least regions of the core (11). The sheath (12) has, in the...
US-8,138,661 Side surface light emitting device
In a side surface light emitting type light emitting device mounted on the surface of a wiring board, the light emitting device comprises: a base body part...
US-8,138,660 Plasma jet spark plug
A plasma jet spark plug comprising: a center electrode; an insulator having an axial bore extending in an axial direction, and retaining the center electrode...
US-8,138,659 Piezoelectric component and method for manufacturing same
Disclosed is a piezoelectric component (1) comprising a piezoelectric transducer (10) wherein a pair of electrodes (20a, 20b) are formed on both major surfaces...
US-8,138,658 Piezoelectric-ferroelectric actuator device
An actuator device is disclosed. The actuator device comprises a stack of piezoelectric-ferroelectric active layers separated by surface electrodes. At least a...
US-8,138,656 Actuator pump system
An actuator housing unit for a system of layered surfaces, comprising an activated primary surface having a physical shape capable of change when activated by...
US-8,138,655 Electrostatic actuator with electrodes having varying distances at different portions
An electrostatic actuator includes first and second lower electrodes formed apart from each other above a substrate, an electrode portion formed above the first...
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