Energy harvesting in RFID systems
Methods, systems, and apparatuses for providing power to devices that are part of RFID systems are described. Energy is harvested at portable/mobile devices,...
Electric power converter
A voltage-command correction unit provided between an electric-power conversion unit and a voltage-command calculation unit provides a predetermined current...
Fan motor speed control circuit, fan apparatus, and electronic apparatus
A fan motor speed control circuit includes: a driving circuit configured to drive a fan motor so as to run at a rotation speed corresponding to a drive signal;...
Motor apparatus and method
A method of operating a motor, the method comprising: operating a motor at a first speed; operating the motor in negative slip; imbalancing at least one phase...
AC/DC converting circuit and motor controller using the same
An AC/DC converting circuit, has a full-bridge rectifier having two input terminals and two output terminals, a first capacitor, a second capacitor, an...
Apparatus and method for driving synchronous motor
The synchronous motor driving apparatus including position sensors provided in the synchronous motor, a current polarity detection circuit for detecting the...
Apparatus for actuating an electrical switching device
The invention relates to a device for actuating an electrical switchgear comprising at least one mobile contact point driven by a rotary shaft. According to the...
State memorizing device for movable member
A state memorizing device for a movable member, includes a lock state determining portion for determining whether or not the movable member, driven by a motor,...
Motor drive unit and optical apparatus
A motor drive unit includes a controller configured to drive a motor to a target position by using a first driving mode in which a state of energization of...
Fan and controlling device thereof
A fan is electrically connected with an alternating current power source. The fan includes an impeller, a motor and a controlling device. The controlling device...
Single-phase brushless motor
The single-phase brushless motor according to one aspect of the present invention includes a coil array having a plurality of magnetic coils 11-14; a magnet...
Method for determining an achievable torque operating region for a
A method for controlling a transmission operative to transfer power between an input member and torque machines and an output member includes determining...
Control of a linear motor
Disclosed is a linear electric motor having a fixed primary comprising a stator divided into a number of sections, including a translating secondary having an...
Methods and apparatuses for estimating transient slip
A method of determining a slip estimate associated with an induction motor through analysis of voltage and current signals. A fundamental frequency is...
Injector for betatron
An electron acceleration portion of a Betatron having a vacuum chamber with an interior wall spaced from an exterior wall with a main electron orbit located...
Illumination control network
The present invention addresses the problem of providing illumination in a manner that is energy efficient and intelligent. In particular, the present invention...
Voltage sensing apparatus for power regulation and over-voltage protection
of discharge lamp and method thereof
The configurations of a discharge lamp system and a controlling method thereof are provided in the present invention. The proposed discharge lamp system...
Apparatus and method enabling fully dimmable operation of a compact
An electronic ballast circuit and related method for enabling full range dimming of a gas discharge load such as a compact fluorescent lamp.
Optocoupler system with reduced power consumption and pulse width
According to one embodiment, there is provided an optocoupler system configured to generate current signals having high, low and no amplitude portions in...
Current-limiting protection circuit of a remotely controlled ceiling
A current-limiting protection circuit of remotely controlled ceiling fan-lamp is disclosed. The current-limiting protection circuit includes a microcontroller...
LED driver with feedback calibration
Power management in a light emitting diode (LED) system having a plurality of LED strings is disclosed. A voltage source provides an output voltage to drive a...
Method and device for LED channel managment in LED driver
Disclosed are example open channel detection techniques at a light emitting diode (LED) driver of an LED system. The LED driver does not enable its LED channels...
Light element array with controllable current sources and method of
A light emitting array is described and includes first, second and third light emitting elements, and first and second current sources. The first light emitting...
System for supplying current to a load
A system for supplying current to a load is disclosed. One embodiment provides a switching converter for providing a load current to the load. The switching...
Light-emitting semiconductor device driver and method
An electronic device includes circuitry for driving a light-emitting diode (LED) or other light-emitting semiconductor device. The circuitry includes a first...
Circuit for driving light source
A light source driving circuit including a driving module, a plurality of first switches, a detecting unit, and a control unit is provided. The plurality of...
Light emitting device
A light emitting device includes an electronic driver and a planar light emitting element. The driver is connected with a source and the light emitting element,...
Software controlled electronic dimming ballast
A software controlled electronic dimming ballast for preheating, striking, and varying the dimming level of a lamp. In one embodiment, the ballast includes an...
AC to DC LED illumination devices, systems and methods
Illumination devices (10), systems and methods that convert an alternating current (AC) supply (14) to a direct current (DC) for powering a plurality of light...
Device for setting luminosity of light-emitting diodes
The invention concerns a circuit for setting all types of LED'S (7), mounted in series of five, their particular arrangements in series of five, powered by a...
Alternating headlights and method of operating
A multi-headlight assembly of a motorcycle includes a pair of headlights. A first one of the pair of headlights includes a low power main lamp and a second one...
Ceramic high intensity discharge lamp having uniquely shaped shoulder
A high intensity discharge lamp, in certain embodiments, includes a uniquely shaped shoulder and dimensions selected to reduce stress and associated cracking....
Electrode configurations for gas discharge device
Electrode configurations for a gas discharge device such as a plasma display panel (PDP) having one or more substrates and a multiplicity of pixels or...
Plasma display panel with colored first and second phosphors
A plasma display panel includes a front substrate providing an image display surface, a rear substrate facing the front substrate, barrier ribs arranged between...
Plasma display device and method of manufacturing green phosphor material
for plasma display device
A plasma display device having a panel main body in which a pair of transparent substrates is arranged in opposition so as to form a discharge space between the...
Flat panel display device and method of making the same
Disclosed is a method of making a flat panel display device. The flat panel display device includes a first substrate, an array of pixels formed on the first...
Organic electroluminescent display and method of making the same
An organic EL display includes an organic material, a gas barrier layer on the member, and an organic EL unit on the gas barrier layer. The gas barrier layer...
Organic light emitting display having electrostatic discharge protection
An organic light emitting display in which an electrostatic discharge circuit is formed on a non-pixel area of a substrate is disclosed. The electrostatic...
Organic electroluminescent device with carrier blocking layer interposed
between two emitting layers
An organic electroluminescent device including in sequence an anode, a first emitting layer (5), a carrier barrier layer (6), a second emitting layer (7) and a...
Organic light-emitting apparatus with resin layer extending from
light-emitting section over wiring lines
An organic light-emitting apparatus includes a substrate, a plurality of organic light-emitting devices which are arranged above the substrate and which form a...
Field-emission cathode, with optical control
The invention relates to an optically-controlled field-emission cathode, comprising a substrate (10, 20, 30, 40, 50, 60, 70, 80, 90, 100) having at least one...
Electron beam apparatus and image display apparatus therewith
In an electron beam apparatus including an electron emission element and an anode, the electron emission element includes a gate 5 and a cathode 6 having a...
Cold-cathode light-emitting device with defocusing grid and associated
methods of manufacturing
A light emitting device has an enclosure with a face portion, a cold cathode within the enclosure, a phosphor layer disposed on an interior surface of the face...
Planar light source device and liquid crystal display device having the
A planar light source device includes a lower substrate, a cathode electrode a carbon nanotube, an upper substrate, a fluorescent layer, and an anode electrode....
Field emission electrode, manufacturing method thereof, and electronic
An electron emission film having a pattern of diamond in X-ray diffraction and formed of a plurality of diamond fine grains having a grain diameter of 5 nm to...
Fluorescent display device and conductive paste for the fluorescent
A fluorescent display device includes an aluminum wiring layer formed on an insulating substrate; an insulating layer formed on the aluminum wiring layer, the...
Flat coplanar-discharge lamp and uses of same
A flat discharge lamp transmitting radiation in ultraviolet or visible, including first and second flat, or substantially flat, glass elements substantially...
Material for preparing protective layer and plasma display panel
comprising the protective layer
A plasma display panel (PDP) including a protective layer and a material for preparing the protective layer that can be easily fabricated and has little...
Fluorescent lighting creating white light
A light emitting system (1) comprising a radiation source (2) capable of emitting a first light of at least a first wavelength spectrum; a first fluorescent...
Spark plug casing and spark plug having the spark plug casing
A spark plug casing includes a single-piece shell having a nut portion, first and second tubular portions and a converging shell portion, which are configured...