Circuit for a motor vehicle, in particular for actuating a lighting device
A circuit is provided for actuating a lighting device in a motor vehicle. The circuit includes first and second light sources, that may include one or more...
Color temperature controller and color temperature control method of light
This invention discloses a color temperature controller and a color temperature control method of a light emitting diode (LED). The color temperature controller...
Multiple location dimming system
A multiple location dimming system comprises a plurality of dimmers coupled between an AC power source and a lighting load. Each of the plurality of dimmers is...
System and method for selectively dimming an LED
Embodiments of the present disclosure include an LED ballast circuit for dimming one or more LEDs using a phase controlled dimmer switch. The LED ballast...
Light source driving device
A light source driving device includes a power factor correction (PFC) circuit, a power stage circuit, a power conversion circuit, a balancing circuit, an...
Lamp control circuit and method of driving a lamp
In a method of driving a lamp using a lamp control circuit, the lamp control circuit comprises a communication circuit and a lamp driving circuit. The lamp...
Method of driving discharge lamp, driving device, and projector
A method for driving a discharge lamp that supplies an AC current to a discharge lamp having a first electrode and a second electrode so as to produce discharge...
Electrodeless lamps and methods
An electrodeless plasma lamp and method of generating light are described. The lamp may comprise a lamp body, a source of radio frequency (RF) power and a bulb....
Circuits and methods for driving a load with power factor correction
A circuit for driving a load includes a power line, converter circuitry, and a controller. The power line is operable for providing an input current and an...
Light emitting diode driving circuit
A LED driving circuit includes a transformer, a rectifying filtering circuit, a PWM IC, a constant current circuit, and a feedback circuit. The transformer has...
Driving device and driving method for discharge lamp, light source device,
and image display apparatus
A driving device for a discharge lamp includes: a discharge-lamp lighting unit that supplies an alternating current to the discharge lamp to thereby supply...
A direct current to alternating current (DC/AC) inverter is for driving a fluorescent lamp through quasi sine wave generation. The DC/AC inverter includes a...
Electronic ballast with controlled filament preheating using half-wave
lamp current detection
An electronic ballast is provided for controlled preheating of filaments in a discharge lamp. A power converter has a plurality of switching elements and...
Circuit arrangement for firing a discharge lamp
A circuit arrangement for starting a discharge lamp, comprising: a first and a second input terminal for connecting an input voltage; an inverter, which has an...
Low voltage light source driving circuit
A low voltage LED (Light Emitting Diode) driving circuit operates under low supply voltage to provide stable and reliable control of LEDs. The LED driving...
Device and method for periodic diode actuation
An energy efficient illumination device is provided in which energy consumption is reduced by using a pulse generating circuit which provides power to LEDs in...
Light-emitting diode backlighting systems
Lighting system embodiments are provided to energize and calibrate strings of light-emitting diodes. These embodiments are particularly useful for calibration...
Control system for light-emitting device
A control system for a light-emitting device may include test circuitry, photodetectors, and process circuitry. The test circuitry is configured to sequentially...
Method for inductively-driven plasma light source
A method for producing light includes introducing an ionizable medium for generating a plasma into a chamber. The method also includes applying at least one...
An illumination system includes an LED lamp, a timer, a controlling circuit, a driving circuit and a power source electrically connected together. The timer...
Compact high current rare-earth emitter hollow cathode for hall effect
An apparatus and method for achieving an efficient central cathode in a Hall effect thruster is disclosed. A hollow insert disposed inside the end of a hollow...
A xenon lamp having a lamp tube made of silica glass containing titanium oxide and having a discharge chamber with a light emitting part containing xenon and in...
Plasma display panel
A plasma display panel includes a front panel including a glass front substrate, a display electrode formed on the substrate, a dielectric layer formed so as to...
Plasma display device having an anisotropic conductive film
A plasma display device includes a plasma display panel for displaying an image by a gas discharge. A chassis base is attached to the plasma display panel and...
A display device includes a transparent plate having a first area and a second area, a first conductive line on the second area of the transparent plate, a...
A display apparatus for displaying indications using liquid crystal or Light-Emitting Diodes (LEDs) that includes a 12-segment display, including a first...
Organic light emitting display
An organic light emitting display that can avoid or reduce scratched wires and dark spot defects. The organic light emitting display includes a pixel substrate...
Organic electroluminescent compounds with high efficiency and display
device using the same
The present invention relates to an organic electroluminescent compound containing fluorenyl group and a display device using the same, more precisely the...
Organic electroluminescent structure having a red color
luminescent-electron transport layer
An organic electroluminescent structure has a first electrode, a first primary color luminescent patterned layer disposed on the first electrode, a second...
System for displaying images employing tandem electroluminescent device
A system for displaying images is provided. The system includes a tandem electroluminescent device having a first electrode. N electroluminescent units are...
Organic-inorganic lighting device and a method for fabricating the same
An organic-inorganic lighting device and a method for fabricating the same is disclosed. Firstly, a conductive substrate is provided, and an inorganic...
LED lighting unit with LEDs and phosphor materials
An LED lighting unit can be configured to have a high color rendering for which color temperature can adjust itself to be close to a natural color. The LED...
Luminescent screen and image display apparatus
An image display apparatus includes a rear plate including an electron-emitting device; and a luminescent screen including a plurality of light-emitting...
Two-way reciprocal amplification electron/photon source
In one embodiment of the present invention, an electron/photon source is disclosed based on field emission, cathodoluminescent and photo-enhanced field...
Carbon based field emission cathode and method of manufacturing the same
According to example embodiments, a method for manufacturing a field emission cathode includes providing a liquid compound comprising a liquid phenolic resin...
When an insulator of a spark plug receives an external force in a bending direction perpendicular to an axis at a rear end side body portion, a position C where...
Spark plug comprising a ground electrode support
The invention relates to a spark plug of an internal combustion engine, especially for use in Otto gas engines. Said spark plug comprises, supported by an...
Filter and display device having the same
A filter for a display device includes a base substrate, a shielding film formed based on a single transparent base layer, and an adhesive layer adhering the...
LED bulb structure having insertion end, and/or heat dissipation element,
and/or heat-and-electricity separated...
An LED bulb structure having an insertion end includes a first electrically conducting pin, a second electrically conducting pin having a die pad at an end...
Light emitting diode (LED) lighting device
An LED lighting device comprises: a thermally conducting body having an at least one opening that connects with a cavity within the body and a plurality of LEDs...
Miniature mechanical resonator device
Novel configurations for a miniature vibrating beam mechanical resonator provide low energy transfer to a supporting structure and low sensitivity to mounting...
Compact thermoacoustic array energy converter
A thermoacoustic array energy converter consists of heat driven thermoacoustic prime movers in parallel coupled by means of an acoustic cavity to a...
Harvesting energy from vehicular vibrations using piezoelectric devices
An energy harvesting apparatus for deployment on a vehicle having a frame includes a spring assembly coupled to the frame and configured for compressions and...
Self-powering headset, devices and related methods
In one aspect, the invention relates to a headset that includes an element that generates energy in response to forces. The headset includes at least one...
Flat stacked-type conductive polymer actuator
A first conductive polymer film, a plate-shaped first porous member, a second conductive polymer film, and a plate-shaped second porous member are stacked on...
Linear piezoelectric nano-positioner
A linear piezoelectric nano-positioner includes an armature configured to be translated along a longitudinal axis and having oppositely-disposed bearing...
Elastic wave device using SH waves as the principal component
An elastic wave device that achieves an improved frequency-temperature characteristic and a sufficiently reduced spurious component includes a piezoelectric...
A motor assembly includes a flexible base mount having an integrally formed axial tube, support ledges disposed on the axial tube to axially support a stator...
Miniature electrical drive and magnetic return path element, and method
for its production
The present invention relates to a miniature electrical drive (1), in particular a rotating field drive with permanent magnet excitation, having a stator (2)...
Laminated stator assembly
A stator core for a generator includes a multiple of core laminations along an axis, each of the multiple of core laminations define at least one leg which...