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US20140239821 OCCUPANCY SENSOR WITH MODULAR DISCONNECT  
A system has a lighting fixture has a first connector electrically coupled to a power supply, the first connector being separately electrically coupled to a load, an occupancy sensor having a...
US20130221863 GENERATOR SUITABLE FOR POWERING A DENTAL CURING LIGHT  
The generator for a piezoelectric motor is also suitable for powering a high power LED for a dental polymerisation lamp via a rectifier, and comprises two transformers each including a primary...
US20150195883 POWER OVER ETHERNET LIGHTING FIXTURE  
In a first embodiment, a lighting fixture is configured as a power over Ethernet (PoE) powered device (PD), which is capable of facilitating Ethernet-based communications with and receiving power...
US20120319595 Separable, keyed electrical/electronic modules for mating to LED lighting assemblies  
An LED lighting element comprised of at least two pieces designed for use with legacy lighting fixtures having a separable transformer and lighting element to improve efficacy and economy of LED...
US20130257302 DIMMER COMPATIABLE LED BULB DRIVER CIRCUIT  
A light-emitting diode (LED) bulb for use with a leading-edge dimmer includes a shell and an LED contained within the shell. A base is attached to the bulb for connecting the LED bulb to an...
US20140122017 FLUORESCENT SOCKET CONNECTOR HAVING BEACON MODULE FOR INDOOR POSITIONING, AND INDOOR POSITIONING SYSTEM USING THE SAME  
A fluorescent socket connector having a beacon module for indoor positioning and an indoor positioning system using the same are provided. The fluorescent socket connector includes a power supply...
US20130241426 LED LIGHT COMPRISING AN INTEGRATED DRIVER  
Disclosed is an LED light comprising at least one LED (43) that is arranged on a ceramic support element (32) and is connected thereto in a thermally conducting manner, and an electronic driver...
US20150195889 Fluorescent Electronic Ballast  
A fluorescent electronic ballast including: a rectifier circuit, for receiving an AC power supply and converting the AC power supply into a DC power supply; an inverter circuit, coupled to a...
US20140312794 THREE-WAY OMNI-DIRECTIONAL LED LAMP DRIVER CIRCUIT  
An LED driver circuit has a rectifier circuit including a first input terminal coupled to a first AC voltage line and a second input terminal coupled to a second AC voltage line. The rectifier...
US20120280633 TWO-WIRE DIMMER CIRCUIT FOR A SCREW-IN COMPACT FLUORESCENT LAMP  
A dimmer switch for controlling the intensity of a dimmable screw-in compact fluorescent lamp provides smooth dimming of the fluorescent lamp and prevents flickering of the lamp due to multiple...
US20130241425 LED DRIVER CIRCUIT  
In order to supply power and control the power supplied to an LED (43), in particular an LED (43) comprising a ceramic support element (4, 32), an LED driver circuit (17) is designed to regulate...
US20130147376 EMERGENCY LIGHTING SYSTEMS INCLUDING BIDIRECTIONAL BOOSTER/CHARGER CIRCUITS  
An emergency lighting module for providing emergency power to a solid state luminaire is provided. The emergency lighting module includes a control circuit configured to detect a line voltage, a...
US20130169162 BALLAST CIRCUIT FOR LED-BASED LAMP INCLUDING POWER FACTOR CORRECTION WITH PROTECTIVE ISOLATION  
A ballast circuit for a light emitting diode (LED) based lamp including power factor correction with protective isolation. The circuit includes a transformer with electrically isolated windings...
US20120224374 LIGHT EMITTING DIODE LIGHT BULB AND INCANDESCENT LAMP CONVERSION APPARATUS  
Apparatus and methods separate the functions of light emission, heat dissipation, and power conversion in LED lighting. Doing so may facilitate cost-effective LED lighting and enable the...
US20140035475 CONTROLLER OF AN AC-DC CONVERTER FOR LED LIGHTING  
The present invention relates to a controller of an AC-DC converter, which controls an LED lighting using electricity of AC 100V to 250V which is used in a building or home, and more particularly,...
US20120139431 VARIABLE LOAD CIRCUITS FOR USE WITH LIGHTING CONTROL DEVICES  
A variable load circuit (2) is provided for use with a dimmer (1). A low wattage load such as a LED (3) is provided in series with the dimmer and the variable load circuit is provided in parallel...
US20140049175 POWER SUPPLY CIRCUIT FOR A PFC CONVERTER  
A PFC converter (100) is disclosed that includes a voltage rectifier circuit (126, 127, 153) and a voltage regulator circuit (81, 90, 33, 54). The PFC converter (100) also includes an inductor...
US20120098447 METHOD FOR ADJUSTING LIGHT BRIGHTNESS USING A TOGGLE SWITCH AND RELATED ILLUMINANT SYSTEM  
A method for adjusting the brightness of a light source is performed according to the status of input voltage which is determined by detecting how and how many times a toggle switch switches...
US20140077713 LUMINAIRE  
A luminaire according to one embodiment includes a DC power supply circuit, a switching power supply, and a lighting load. The DC power supply circuit converts an AC voltage controlled in phase to...
US20150137691 HALF-BRIDGE INVERTER, ELECTRONIC BALLAST AND LIGHTING DEVICE WITH THE HALF-BRIDGE INVERTER  
The invention discloses a half-bridge inverter which includes first and second inverter input terminals for receiving a direct current (DC) voltage, first and second inverter switches, first and...
US20120091907 LIGHTING CIRCUIT FOR LIGHTING LED, LAMP AND LIGHTING DEVICE  
A lighting circuit that receives power from an alternating-current power supply 43 via a dimmer 45 to light an LED, the lighting circuit comprising: a rectification circuit 31; a switching power...
US20120223650 LIGHTING DEVICE  
Information technology is becoming more and more present in illumination applications, such as lighting devices. To limit the installation effort and cost of such illumination applications...
US20130342123 TRAILING EDGE DIMMER COMPATIBILITY WITH DIMMER HIGH RESISTANCE PREDICTION  
In at least one embodiment, an electronic system includes a controller, and the controller provides compatibility between an electronic light source and a trailing edge dimmer. In at least one...
US20130119878 Lighting Power Source and Luminaire  
A lighting power source according to an embodiment includes a rectification circuit, a smoothing capacitor, a waveform shaping circuit, and a DC-DC converter. The rectification circuit rectifies...
US20140125239 CIRCUITS AND METHODS FOR REDUCING FLICKER IN AN LED LIGHT SOURCE  
Method and circuits for balancing a first waveform used to drive an LED are disclosed herein. The first waveform has a first cycle with a first amplitude and a second cycle with a second...
US20150061517 Driving Circuit for Driving LED Load  
A driving circuit includes a rectifier circuit and a LED driver integrated circuit. The rectifier circuit rectifies an ac power supply into a de power supply. The LED driver integrated circuit...
US20140361699 LED CONTROL CIRCUITS AND METHODS  
An LED controller is disclosed herein. An embodiment of the controller includes a first input connectable to a power source and an output connectable to at least one light-emitting diode (LED). A...
US20130099688 CONTINUOUS DIMMING AC LED DEVICE  
A continuous dimming AC LED device is operated in association with a dimmer. When the dimmer adjusts brightness, the voltage supplied to the AC LED driver is reduced to decrease the brightness of...
US20130320869 ELECTROMAGNETIC BALLAST-COMPATIBLE LIGHTING DRIVER FOR LIGHT-EMITTING DIODE LAMP  
A lighting driver includes a shunt switch circuit configured to detect when an input of the lighting driver is connected to mains power without a ballast, and in response thereto to disable the...
US20130057167 DAMPER CIRCUIT FOR SWITCHED DIMMING  
A power converter includes dimmer circuit, a rectifier circuit, and a thyristor damper circuit. The dimmer circuit provides a dimmer voltage in response to an input voltage. The rectifier circuit...
US20140265901 DRIVER FOR CONNECTING LED TO ELECTRONIC BALLAST  
To allow an electronic ballast (3) of a fluorescent tube lamp or a similar lamp to be replaced by a light emitting diode circuit (2) without removing the electronic ballast (3), a driver (1) is...
US20140320033 DIMMABLE SCREW-IN COMPACT FLUORESCENT LAMP HAVING INTEGRAL ELECTRONIC BALLAST CIRCUIT  
A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit generates...
US20150195893 BALLAST FOR GAS DISCHARGE LAMPS  
A multi-stage ballast for powering a gas discharge lamp includes a power factor correction stage configured to receive an AC input power and produce a phase corrected DC power, a buck regulator...
US20150015153 CIRCUIT AND METHOD FOR DRIVING LED LAMP WITH A DIMMER  
A driver circuit for an LED (light-emitting diode) lamp includes a transformer having a primary winding and a secondary winding, a dimmer circuit coupled to a power source for varying an input...
US20150173135 SYSTEM AND METHOD OF VARIABLE RESISTANCE LED LIGHTING CIRCUIT  
A system and method for an LED lighting circuit that utilizes a driver circuit to power LEDs in an LED mesh. The LED lighting circuit provides a rectified input power signal to power the LED mesh....
US20130187557 MULTI-LEVEL ADAPTIVE CONTROL CIRCUITRY FOR DEEP PHASE-CUT DIMMING COMPACT FLUORESCENT LAMP  
An electronic ballast has a rectifying circuit for rectifying an input voltage controlled by a phase dimmer. The electronic ballast has an averaging circuit for averaging current received from the...
US20050218823 Camera flash apparatus using ultraviolet light for triggering of the flash tube  
A camera flash apparatus having a flash tube enclosing a pair of electrodes in an ultraviolet light transparent envelope containing gas molecules normally presenting a high impedance between the...
US20130175939 BALLAST WITH AN ARC QUENCHING CIRCUIT  
An arc detection circuit that detects an occurrence of arcing between ballast and a lamp is provided. A transformer has a primary side connected between the ballast and the lamp to receive lamp...
US20150145428 COMPACT FLUORESCENT LAMP THREE-WAY BALLAST DRIVER  
A compact fluorescent lamp (CFL) ballast driver includes first, second and neutral AC voltage terminals, a full wave rectifier between the first AC voltage terminal and the neutral AC input...
US20130043788 CONTROLLABLE VERSATILE LED SYSTEM  
The present invention relates to the development of a method and system for manufacturing and deploying light emitting diode (“LED”) technology in a highly efficient manner. Devices of the...
US20120153854 LIGHTING CIRCUIT, LAMP, AND ILLUMINATION APPARATUS  
A lighting circuit that is for a lamp including an LED as a light source and that includes a resonant circuit that can be designed with ease. A lighting circuit 11 is for a lamp including a...
US20130278159 BLEEDER CIRCUIT FOR USE IN A POWER SUPPLY  
A bleeder circuit for use in a power supply of a lighting system includes a first terminal to be coupled to a first input of the power supply. A second terminal is to be coupled to a second input...
US20150156837 LED LIGHTING DEVICE  
Provided is a circuit for preventing an operating current of a TRIAC dimmer from being dropped below a holding current value. In this regard, a light emitting diode (LED) lighting device includes...
US20070035255 LED strobe for hazard protection systems  
A light-emitting diode (“LED”) based strobe may be used in automated system to provide a visual alert to occupants and/or building personnel if an emergency condition exists. A LED based strobe...
US20140197737 Electrical Equipment  
Electrical equipment includes a switching power source, a rectifier circuit, a pair of capacitative elements, and a load. The switching power source outputs an alternating-current voltage with...
US20120299493 DIMMING ANGLE SENSING CIRCUIT AND DRIVING METHOD THEREOF  
The present invention relates to a dimming angle sensing circuit and a driving method thereof. A dimming angle sensing circuit according to an exemplary embodiment of the present invention uses a...
US20080285279 Light emitting diode (LED) light bulb  
The present invention relates to an LED light bulb. The LED light bulb comprises a base and a hollow shell. The base has a closed end, an open end and a sleeve between the two ends. The shell is...
US20130181625 SINGLE STAGE ELECTRONIC BALLAST WITH POWER FACTOR CORRECTION  
A single stage electronic ballast with power factor correction is provided. The single stage electronic ballast can work under the present intensity discharge lamp without any change and provide...
US20120293085 ACTIVE DAMPER AND DRIVING METHOD THEREOF  
An exemplary embodiment of the present invention relates to an active damper and a driving method thereof. An AC input passed through a dimmer is transmitted to an active damper through a...
US20120256552 BALLAST STRUCTURE USED FOR HIGH-INTENSITY DISCHARGE LAMP  
Disclosed is a ballast structure on which a high-intensity discharge lamp (HID lamp) can be installed and which can light the HID lamp; the ballast structure is provided with a base and an HID...