Class / Patent application number | Description | Number of patent applications / Date published |
315085000 | WITH ELECTROMAGNETIC WAVE RADIATION PREVENTING OR SHIELDING MEANS | 71 |
20090072745 | Lighting Fixture with EMI/RFI Electrically Conductive Shielding Grid - A lighting fixture for use in an environment which requires protection from EMI/RFI emissions. The fixture comprises a body forming a light-emitting opening, lighting components including at least one lamp in the body, a lens covering the opening, and a conductive grid across the opening, the grid being separate from the lens, electrically connected to the body, and positioned between the lighting components and the opening. | 03-19-2009 |
20090096380 | System and method for producing energetic particles by gas discharge in deuterium containing gas - A system for producing energetic particles including a housing containing an anode and a cathode, wherein the anode is connected to a voltage supply and the cathode is one of a cathode containing an oxide layer and a cathode in the presence of oxygen, said cathode is grounded; a vacuum source connected to the housing for providing a reduced pressure in the housing; and a supply of at least one gas connected to the housing for introducing the at least one gas into the housing containing deuterium and oxygen. | 04-16-2009 |
20090218950 | Single sheet film filter, method of manufacturing the same, and plasma display apparatus using the same - A single sheet film filter and a manufacturing method thereof and a plasma display apparatus with the single sheet film filter capable of preventing ground problems, securing ground resistance, and reducing ground processing time. This single sheet film filter includes a conductive layer for shielding EMI arranged on one surface of a transparent base film and having a ground portion at an edge region on the base film and a hard coating layer covering the conductive layer in which the ground portion is exposed through a plurality of apertures in a stripe shape formed in the hard coating layer. | 09-03-2009 |
20090230870 | ELECTRONIC BALLAST FOR HIGH INTENSITY DISCHARGE LAMPS - The present High Intensity Discharge electronic lamp ballast uses a “set of controls” that can be performed by controlling energy delivery by the “line side converter” to the “lamp side inverter”. This set of controls comprises: 1) open circuit voltage control, 2) breakdown voltage amplitude control, 3) glow-to-arc transition current control, 4) “initial arc development” current control, 5) “arc stabilization” current control, 6) lamp power control, 7) lamp dimming, 8) “lamp rectification” current control, and 9) short circuit and lamp fault protections. One of the primary advantages of this “line side converter” energy delivery control method is that it doesn't need to vary the lamp operating frequency to achieve the above-noted controls. | 09-17-2009 |
20100320912 | MAGNETICALLY INSULATED COLD-CATHODE ELECTRON GUN - A system and method of magnetically insulating the cathode of a cold-cathode electron gun is achieved. A strong magnetic field is applied in the vicinity of the cold cathode to deflect and constrain the flow of electrons emitted from structures within the electron gun. The magnetic field largely prevents re-reflected primary and secondary electrons from reaching the cathode, thereby improving the operation and increasing the life of the cold-cathode electron gun. In addition, the insulating magnetic field improves electron beam focusing and enables a reduction in the magnitude of static electric focusing fields employed in the vicinity of the cold cathode, further reducing the electron gun's susceptibility to destructive arcing. | 12-23-2010 |
20110234098 | Power Transmission Circuit with EMI Shielding, Lighting Module, and Panel Display Module - A power transmission circuit, a light source module including the power transmission circuit, and a panel display device are provided. The power transmission circuit includes a substrate, a power transmission layer, a metal shielding layer, a first protective layer, and a second protective layer. The substrate has a first surface and a second surface with the power transmission layer and the metal shielding layer respectively formed thereon. The metal shielding layer covers a projection region of a transmission section of the power transmission layer. The first and second protective layers are respectively disposed on the power transmission layer and the metal shielding layer and opposite to the substrate to protect the power transmission layer and the metal shielding layer. | 09-29-2011 |
20110241546 | RF Screen Assembly for Microwave Powered UV Lamps - An RF screen for microwave powered UV lamp systems is provided. The RF screen is formed of a single sheet of conductive material in which a mesh pattern has been formed. The screen includes a non-traditional mesh pattern including individual openings with 3 or more nodes. The RF screen is generally configured to optimize the balance between light transmission and RF energy leakage desired for the particular application. Generally, it is desired that the RF screen has an open area percentage greater than about 80% while limiting RF energy leakage from the microwave powered lamp system to acceptable levels. | 10-06-2011 |
20110260619 | LED Dimming Driver - Various embodiments of an LED dimming driver are disclosed herein. In some embodiments, an apparatus for dimmably driving at least one load includes a power supply having a voltage output, a controller having at least one current setpoint output, and at least one driver channel circuit connected to the voltage output of the power supply and to at least one of the at least one current setpoint outputs, the at least one driver channel circuit having a load output. | 10-27-2011 |
20110279032 | MRI-Room LED Lighting System - In an MRI-room LED lighting system having a plurality of LED lighting fixtures and a power supply located outside of the MRI room, the improvement comprising: driver circuitry and PWM dimmer circuitry in each of the lighting fixtures and a dimmer control located outside of the MRI room for controlling the light output of the lighting fixtures, the dimmer control having a variable DC output to control the PWM dimmer circuitry in each lighting fixture, whereby conductor lines from the power supply and dimmer control do not require electrical shielding avoid interference between a MRI scanner and the lighting system. | 11-17-2011 |
20120032595 | ELECTROMAGNETICALLY-COUNTERED DISPLAY SYSTEMS AND METHODS - An electromagnetically-countered display system includes at least one wave source and at least one counter unit. The wave source irradiates harmful electromagnetic waves and the counter unit emits counter electromagnetic waves for countering the harmful waves therewith. Examples of the various counter units for the electromagnetically-countered display system and various mechanisms to counter the harmful waves with the counter units include by matching configurations of the counter units with those of the wave sources, and by matching wavefronts of the harmful waves with those the counter waves. Various methods of countering the harmful waves with such counter waves include by source and/or wave matching. Various methods of providing the counter units for emitting the counter waves defining desired wave characteristics. Various electric and magnetic shields can be employed either alone or in conjunction with the counter units for minimizing irradiation of the harmful waves from the display system. | 02-09-2012 |
20120098431 | GRID FOR ILLUMINATION APPARATUS - The invention relates to illumination, especially to a grid for illumination apparatus. This invention provides a grid ( | 04-26-2012 |
20120104949 | LOAD DRIVING APPARATUS AND DRIVING METHOD THEREOF - A load driving apparatus is disclosed. The load driving apparatus includes a driving signal generator and a controller. The driving signal generator is used for providing a driving signal to a load. The controller is used for generating and providing a control signal to the driving signal generator. The driving signal generator generates N integer signals and M fractional signals in a driving period to form the driving signal according to the control signal. N and M are positive integers, and an amplitude of the integer signals is greater than an amplitude of each of the fractional signals. | 05-03-2012 |
20120139416 | CLAMPING UNIT FOR DEPOSITING THIN FILM SOLAR CELL AND SIGNAL FEED-IN METHOD - A clamping unit for depositing a thin film solar cell and a signal feed-in method are provided. The clamping unit comprises an electrode plate module, a signal feed-in module ( | 06-07-2012 |
20120212134 | Dimmable Offline LED Driver - Embodiments of the present invention provide a system and method for controlling the amplitude of a current from a diode bridge into an EMI filter and LED array. Due to the manner in which certain dimmers (i.e., leading edge dimmers) operate, there is a delay on its output in transmitting a voltage when the voltage crosses zero. | 08-23-2012 |
20120256545 | High-Pressure Discharge Lamp - A high-pressure discharge lamp comprising a lamp base ( | 10-11-2012 |
20120280617 | SINGLE-ENDED PRIMARY INDUCTANCE CONVERTER (SEPIC) BASED POWER SUPPLY FOR DRIVING MULTIPLE STRINGS OF LIGHT EMITTING DIODES (LEDS) IN ROADWAY LIGHTING FIXTURES - A lighting fixture and power supply are provided that allows a power factor correction (PFC) single ended primary inductance controller (SEPIC) that provides a controlled voltage output to provide a constant current to an LED load. The power supply provides an efficient and stable power supply for LEDs. Multiple power supplies can be provided on the same printed circuit board to control multiple LED channels. | 11-08-2012 |
20120286663 | DRIVER CIRCUIT FOR REDUCED FORM FACTOR SOLID STATE LIGHT SOURCE LAMP - A solid state light source driver circuit, system and method are provided. The driver circuit includes a rectifier circuit, an energy storage element coupled thereto, a current bleeder circuit coupled thereto, and a switch. The rectifier circuit receives AC input and provides unregulated DC voltage. The switch closes to couple some of the unregulated DC voltage to the energy storage element, and opens to transfer energy to drive the light source. A power factor controller circuit provides an output signal to control the switch. The current bleeder circuit provides supply voltage to the power factor controller circuit within a range and maintains a current flow associated with the AC input that exceeds a predetermined threshold. A constant off-time controller circuit provides a switching frequency control signal to the power factor controller circuit. An EMI filter reduces generated EMI noise. | 11-15-2012 |
20130026917 | ION FOCUSING IN A HALL EFFECT THRUSTER - A Hall effect thruster with an annular discharge channel that includes inner and outer sidewall electrodes located at an axial position that is downstream from the anode. The Hall effect thruster may also include shielding elements configured to shield the inner and outer sidewall electrodes from electrons in the annular discharge channel. The shielding elements may be magnetic shielding elements. | 01-31-2013 |
20130033177 | Electronic Ballast - An electronic ballast for lighting applications is disclosed. The electronic ballast comprises a first charge pump having an input capacitor ( | 02-07-2013 |
20130069529 | ELECTRONIC DEVICE CONTAINING NOISE SHIELD - Described herein are embodiments of an electronic device including a conductive noise shielding element. The noise shielding element may be connected to an electronic noise-generating element provided within a housing of the electronic device and may by connected to a source of direct current. The noise shielding element may be provided within the housing of the electronic device and may further be thermally connected to the housing. | 03-21-2013 |
20130093325 | LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS AND METHODS - Methods, systems, and devices for light emitting diode (LED) lighting, including a multi-channel LED driver circuit having an electromagnetic interference (EMI) filter and rectification circuit, a power factor correction (PFC) circuit, a current and voltage isolation circuit, a voltage control circuit, and a current control circuit; a wireless interface coupled between the EMI filter and rectification circuit and the PFC circuit; a heat sink including an intercooling and ventilation chamber for air or water cooling disposed therein; one or more screw mount LEDs electrically coupled to the LED driver circuit and thermally coupled to the heat sink; and a lens housing having one or more lenses integrally formed therein and removably coupled to the heat sink or screw mount LEDs and with the lenses disposed over the LEDs. | 04-18-2013 |
20130113375 | TRIAC DIMMABLE POWER SUPPLY UNIT FOR LED - A power-factor-corrected power supply adapted to supply power to one or more light emitting diodes (LEDs), comprises: a triac dimmer electrically connected between an alternating current source and a bridge rectifier; a damping circuit electrically connected between the alternating current source and the bridge rectifier; a bleeder circuit configured to conduct current between a supply terminal of the bridge rectifier and ground only when a triac in the triac dimmer is not conducting current; a fast startup circuit configured to conduct current between the supply terminal of the bridge rectifier and a voltage supply terminal of a power-factor-corrected controller when the triac dimmer is initially turned on until a supply voltage capacitor coupled to the voltage supply terminal of the power-factor-corrected controller has charged; a dimming slope control circuit configured to reduce a first voltage sensed at a current sensing terminal of the power-factor-corrected controller, such that a reduced amount of current is supplied to the one or more LEDs at a given firing angle, wherein the first voltage is representative of a current flowing through a primary winding of a flyback transformer; and a dummy load circuit provided in parallel with the one or more LEDs to draw a holding current for the triac only after the triac is turned on. | 05-09-2013 |
20130134874 | AUTOMATIC LIGHT REGULATING POWER SUPPLY DEVICE - An automatic light regulating power supply device, connected between an AC power supply and a light-emitting-diode (LED) light string, to drive said LED light string to emit light, comprising: a sensing-and-setting unit, and a digital power control unit. Wherein, the sensing-and-setting unit is used to sense infrared signals, and generate a plurality of brightness selection signal. An AC/DC conversion circuit is provided in the digital power control unit, to convert the received AC power into DC power and output the DC power. The digital power control unit is connected to the sensing-and-setting unit, and regulates its power output based on infrared signals of the sensing-and-setting unit and the brightness selection signals, to vary illumination of the LED light string, in achieving energy conservation and lower power consumption. | 05-30-2013 |
20130134875 | Light Regulatable Led Illumination Lamp - A dimming LED lamp having an LED light, an EMI circuit, a power-factor correction circuit, a digital switching power supply circuit, a dimming control circuit, a power supply circuit, a signal acquisition circuit, an MCU microcontroller, a RF wireless transmitter, a RF receiver circuit, an EEPROM memorizer, and a fan circuit. The brightness of the dimmable LED lamp can be dimmed through any conventional incandescent dimmers, or through any ordinary key switch, or through a wireless transmitter. The wireless transmitter can also remotely turn on the lamps or turn off the lamps, at the same time the LED lamp also has the function of brightness saving. The fan circuit uses air convection to cool the LED which has the advantages of aesthetically pleasing appearance, small size, light weight, low cost, long life, and good cooling effect. | 05-30-2013 |
20130154478 | ORGANIC LIGHT EMITTING DEVICE AND ANTISTATIC METHOD FOR THE SAME - An organic light emitting device includes first and second substrates, an organic light emitting element between the first and second substrates, a driving unit located between the first and second substrates to drive the organic light emitting element, a fluorescent layer included on a first surface of the first substrate, and a conductive layer with optical transparency included on a second surface of the first substrate, wherein the organic light emitting element includes a light emitting layer, and a pair of electrodes having the light emitting layer interposed therebetween, the fluorescent layer is provided above the electrode on the side from which light emitted from the light emitting layer is extracted among the pair of electrodes, the fluorescent layer performs fluorescence-conversion on a color of the light emitted from the light emitting layer, the fluorescent layer includes a layer that absorbs light having a specific wavelength, the first substrate has optical transparency, light is emitted from the fluorescence conversion layer to the outside through the first substrate, the fluorescent layer is arranged in a surface direction of the first substrate to form a pixel, and the conductive layer overlaps at least an area in which the pixel is formed. | 06-20-2013 |
20130187543 | DYNAMIC DAMPER AND LIGHTING DRIVING CIRCUIT COMPRISING THE DYNAMIC DAMPER - A dynamic damper in a lighting driving circuit for limiting an inrush current includes a damper circuit and a timing circuit comprising capacitor. The damper circuit is connected to the timing circuit. When an input voltage is provided to the dynamic damper, the capacitor begins to be charged and the capacitance-voltage of the capacitor rises. The damper circuit enters to a first working state and generates a dynamic damper resistor value. When the capacitance-voltage of the capacitor is greater than a first threshold voltage, the damper circuit enters to a second working state and the dynamic damper resistor value begins to decrease. When the capacitance-voltage of the capacitor is greater than a second threshold voltage, the damper circuit enters to a short-circuit state, and the dynamic damper resistor value decreases to zero to facilitate the normal work of the power source converter. | 07-25-2013 |
20130234594 | INTELLIGENT LED DRIVE POWER - An intelligent LED drive power has an EMI filter, two AC/DC constant current units, a microcontroller, a switch unit, two state detect circuits and an assistant power. The input and output of the constant current units are alternatively connected to the output of the EMI filter and the LED light source through the switch unit. The inputs of each state detect circuits are separately connected to the output of one of the constant current units. The outputs of each state detect circuit are separately connected to the microcontroller input; the microcontroller output is connected to the switch unit input; the assistant power input is connected to the EMI filter output. The assistant power output is connected to the microcontroller. The switch controls the two AC/DC constant current units by detecting the mains supply input voltage and the AC/DC constant current unit output voltage and current. | 09-12-2013 |
20130249397 | System for Monitoring and Controlling High Intensity Discharge (HID) Lamps - The present invention provides a system for monitoring and controlling high intensity discharge (HID) lamps. The system includes a digital electronic ballast integrated with PLCC modem and PLCC concentrator. The digital electronic ballast is capable of monitoring and controlling operation of each of the HID lamp in the system. The PLCC concentrator is located in AC Power line network and connected to each of the digital electronic ballast connected to the respective HID lamps in an AC power line network. Further, the PLCC concentrator sends the command signals such as lamp ON/OFF, lamp dimming, lamp scheduling rules to the digital electronic ballast. The PLCC concentrator also receives lamp status, real time electric parameters, failure information, end of lamp life (EOLL) or lamp burning hours, temperature conditions and warning from the digital electronic ballast thereby the PLCC concentrator provide reports to a server to enable remote monitoring of the network. | 09-26-2013 |
20130285550 | LIGHTING CIRCUIT - A lighting circuit comprises a first rectifying diode (D1), a second rectifying diode (D2), a third rectifying diode (D3), a fourth rectifying diode (D4), a first group of LEDs (LED11, . . . , LED1n), a second group of LEDs (LED21, . . . , LED2n), a third group of LEDs (LED31, . . . , LED3n), and a fourth group of LEDs (LED41, . . . , LED4n). The first group of LEDs (LED11, . . . , LED1n) is connected between the anode and the cathode of the first rectifying diode (D1); the second group of LEDs (LED21, . . . , LED2n) is connected between the anode and the cathode of the second rectifying diode (D2); the third group of LEDs (LED31, . . . , LED3n) is connected between the anode and the cathode of the third rectifying diode (D3); the fourth group of LEDs (LED41, . . . , LED4n) is connected between the anode and the cathode of the fourth rectifying diode (D4). | 10-31-2013 |
20130320851 | ORGANIC LIGHT EMITTING DIODE DISPLAY - Disclosed is an organic light emitting diode display, including a first substrate including an organic light emitting diode and a driving circuit part for driving the light emitting diode, a second substrate facing the first substrate and covering the light emitting diode and the driving circuit part, a connection unit connected to the driving circuit part and extending from the first substrate along a rear side thereof, an electronic device disposed between the connection unit and the first substrate and transmitting a signal to the driving circuit part via the connection unit, and an electromagnetic wave-shielding sheet disposed on one side of the first substrate to directly face the electronic device and including a first conductive material layer, a buffer layer formed on one side of the first conductive material layer, and a first adhesive layer formed on the other side of the first conductive material layer. | 12-05-2013 |
20130334963 | Current Regulated LED Strobe Drive Circuit - A current regulating LED strobe drive circuit is disclosed for efficiently producing a LED strobe that is consistent in both intensity and color. The circuit may include an inrush control for limiting an amount of current that is allowed to flow through the drive circuit upon activation, an energy storage component for storing and supplying power for flashing a LED, a current regulator electrically coupled to the energy storage component for sensing and regulating a current supplied by the energy storage element, a LED electrically coupled to the current regulator, and a flash control element electrically coupled to the current regulator for communicating a flash pulse signal that provides a pulsed pattern with which current is allowed to flow from the current regulator to the LED. The circuit may further include an output control having an operator interface for allowing an operator to define a desired light output level. | 12-19-2013 |
20140015412 | LOAD DRIVING APPARATUS RELATED TO LIGHT-EMITTING DIODE LAMP AND METHOD THEREOF - A load driving apparatus related to an LED lamp and a method thereof are provided. The load driving apparatus includes a PWM-based power converter and a determination circuit. The PWM-based power converter is coupled to the LED lamp, and is configured to: generate a DC operation voltage of the LED lamp; and control a current flowing through the LED lamp in response to a dimming signal, so as to adjust a brightness of the LED lamp. The determination circuit is coupled to the PWM-based power converter and the LED lamp, and is configured to: receive the DC operation voltage; and stop conducting the DC operation voltage to the LED lamp in case that a lamp-off condition of the LED lamp is satisfied. | 01-16-2014 |
20140028189 | Architectures for LED Lighting Assemblies - A modular light emitting diode (LED), remote phosphor, and other lighting technologies lighting assembly includes a plurality of lighting subassemblies and a power supply electrically coupled with the plurality of lighting subassemblies in parallel such that each of the plurality of lighting subassemblies receives electrical power from the power supply in parallel with the other of the plurality of lighting subassemblies. | 01-30-2014 |
20140042905 | LIGHT SOURCE DRIVING APPARATUS, LIGHT SOURCE DEVICE INCLUDINGTHE SAME AND LIGHT SOURCE DRIVING METHOD OF THE LIGHT SOURCEDRIVING APPARATUS - Provided are a light source driving apparatus, a light source device including the same, and a light source driving method. The light source driving apparatus includes: a first external input terminal and a second external input terminal; a thermistor with an end connected to the first external input terminal; a discharge resistor with an end connected to the second external input terminal; and a switch which selectively connects, according to a control signal, another end of the discharge resistor to another end of the thermistor or the first external input terminal to the other end of the thermistor. | 02-13-2014 |
20140055032 | MULTI-SEGMENT LED COMPONENTS AND LED LIGHTING APPARATUS INCLUDING THE SAME - An integrated circuit component can include an integrated circuit package and a plurality of terminals provided on the exterior of the integrated circuit package. The terminals are configured to provide electrical connectivity to an interior of the integrated circuit package and a plurality of light emitting diode (LED) segments that includes an LED string in the interior of the package, coupled to the plurality of terminals. | 02-27-2014 |
20140084790 | ELECTROMAGNETIC INTERFERENCE FILTER, AND POWER SUPPLY APPARATUS AND DISPLAY APPARATUS INCLUDING THE SAME - There are provided an electromagnetic interference filter for removing common mode electromagnetic interference, in which electromagnetic interference of a low frequency band and a high frequency band is removed in a single filter because of a wide block frequency band, a power supply apparatus including the electromagnetic interference filter, and a display apparatus including the electromagnetic interference filter. The electromagnetic interference filter includes a core part including at least two legs electromagnetically coupled and forming a closed magnetic circuit; a coil part including first and second rectangular copper wires respectively wound in a single layer around the at least two legs and removing common mode electromagnetic interference included in power transferred from a power line; and a support part having a mounting area in which the core part having the coil part wound therearound is mounted. | 03-27-2014 |
20140084791 | POWER SUPPLY APPARATUS AND LUMINAIRE - A power supply apparatus of an embodiment includes a first filter, a second filter, and a switching power supply. The first filter and the second filter attenuate a common mode current to a level lower than a normal mode current. The switching power supply is connected between the first filter and the second filter, and supplies electric power to an illumination load via the second filter. | 03-27-2014 |
20140103804 | POWER DISTRIBUTION SYSTEM AND METHOD FOR LED LIGHTING - There is disclosed an improved LED lighting system and method which limits current and employs a voltage significantly greater than line voltage in order to allow lighting circuits to be built with up to thousands of Watts fed from a sing power/data source. The present system and method allows exceptionally long lengths of LED lighting of 200 meters or more for large scale LED lighting applications such as the architectural delineation of skyscrapers and bridges. | 04-17-2014 |
20140103805 | PLASMA CONFINEMENT APPARATUS, AND METHOD FOR CONFINING A PLASMA - A plasma confinement apparatus, and method for confining a plasma are described and which includes, in one form of the invention, a plurality of electrically insulated components which are disposed in predetermined spaced relation, one relative to the others, and surrounding a processing region of a plasma processing apparatus, and wherein a plurality of passageways are defined between the respective insulated components; and at least one electrically conductive and grounded component forms an electrical field shielding for the processing region. | 04-17-2014 |
20140111088 | ELECTROMAGNETICALLY-COUNTERED DISPLAY SYSTEMS AND METHODS - The present invention relates to an electromagnetically-countered display system including at least one wave source and at least one counter unit, where such a wave source irradiates harmful electromagnetic waves and the counter unit emits counter electromagnetic waves for countering the harmful waves therewith. More particularly, the present invention relates to various counter units for the electromagnetically-countered display system and to various mechanisms to counter the harmful waves with the counter units, e.g., by matching configurations of the counter units with those of the wave sources, by matching wavefronts of the harmful waves with those the counter waves, and so on. The present invention also relates to various methods of countering the harmful waves with such counter waves by source and/or wave matchings, various methods of providing the counter units for emitting the counter waves defining desired wave characteristics, and the like. The present invention further relates to various processes for providing the electromagnetically-countered display systems and their counter units. The present invention further relates to various electric and magnetic shields employed either alone or in conjunction with the counter units for minimizing irradiation of the harmful waves from the shaving system. | 04-24-2014 |
20140139107 | LED Lighting System and Method - Various embodiments of the invention allow LED lamp fixtures to pass EMI testing irrespective of whether the lamp fixture is operated by a magnetic transformer or an electric transformer without causing input current waveform distortion and without defeating transformer compatibility. In certain embodiments, the type of transformer is determined based on detecting characteristic voltage waveforms and based that determination an EMI filter is automatically switched in and out of the lamp circuit. | 05-22-2014 |
20140145613 | ARRANGEMENTS AND METHODS FOR TRIAC DIMMING OF GAS DISCHARGE LAMPS POWERED BY ELECTRONIC BALLASTS - An apparatus for powering and TRIAC dimming of a gas discharge lamp includes an electronic ballast for powering a gas discharge lamp from a TRIAC based dimmer connected to an AC line, an EMI filter for protecting the AC line from EMI generated by the ballast and the lamp, a DC bus without a smoothing electrolytic capacitor, a resonant DC-to-AC inverter connected to the DC bus for powering the gas discharge lamp with a high frequency current, wherein an auxiliary DC-to-DC power supply input is connected to the DC bus and a first resonant tank having in series a first resonant inductor and a first resonant capacitor, wherein the gas discharge lamp is connected in parallel to the resonant capacitor. | 05-29-2014 |
20140145614 | Electronic Ballast Having Improved Power Factor and Total Harmonic Distortion - An electronic ballast for driving a gas discharge lamp includes an EMI filter, a bridge rectifier coupled to a DC bus without a conventional electrolytic capacitor, a passive valley fill circuit built as a network having 4 charge/discharge energy storage capacitors and 9 diodes (4C9C), and a resonant DC to AC high frequency inverter for powering gas discharge lamp. The 4C9D circuit divides the rectified peak voltage by four and the low output voltage of the circuit is used to provide continuous lamp operation. The result is a ballast having substantially improved power factor, total harmonic distortion, and current crest factor. The electronic ballast is provided with a dimming capability from a TRIAC based wall dimmer. | 05-29-2014 |
20140145615 | INDUCTION RF FLUORESCENT LIGHT BULB WITH BURST-MODE DIMMING - A burst-mode dimmable induction RF fluorescent light bulb that is able to replace an ordinary incandescent light bulb, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent light bulb, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes structures for a dimmable induction RF fluorescent light bulb that includes a bulbous portion, a tapered portion, an electronics portion, and a screw base, creating an external look that is similar to the profile of an ordinary incandescent light bulb. | 05-29-2014 |
20140145616 | REDUCED EMI IN RF INDUCTION LAMP WITH FERROMAGNETIC CORE - An induction RF fluorescent light bulb comprising a power coupler with a ferromagnetic core and conductive material in contact with the ferromagnetic core to reduce extraneous electromagnetic radiation emanating from the power coupler, where the RF fluorescent light bulb has an external appearance similar to an ordinary A19 incandescent light bulb. | 05-29-2014 |
20140145617 | DIMMABLE INDUCTION RF FLUORESCENT LAMP WITH REDUCED ELECTROMAGNETIC INTERFERENCE - A dimmable induction RF fluorescent light bulb comprising a power coupler with conductive material in contact with the power coupler to reduce extraneous electromagnetic radiation emanating from the power coupler. | 05-29-2014 |
20140145618 | DIMMABLE INDUCTION RF FLUORESCENT LIGHT BULB - A dimmable induction RF fluorescent light bulb that is able to replace an ordinary incandescent light bulb, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent light bulb, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes structures for an induction RF fluorescent light bulb that includes a bulbous portion, a tapered portion, an electronics portion, and a screw base, creating an external look that is similar to the profile of an ordinary incandescent light bulb. | 05-29-2014 |
20140145619 | INDUCTION RF FLUORESCENT LAMP WITH LOAD CONTROL FOR EXTERNAL DIMMING DEVICE - An induction RF fluorescent lamp comprising a dimming device load control facility enabling the induction RF fluorescent lamp to provide for electrical loads required for the proper operation of an external control dimming device, the dimming device load control facility controlling a switched electrical load switched in and out of connectivity within the electronic ballast to provide a load for the external dimming device. | 05-29-2014 |
20140145620 | FAST START INDUCTION RF FLUORESCENT LIGHT BULB - A fast starting induction RF fluorescent lamp that is able to replace an ordinary incandescent light bulb, both in its ability to screw into a standard incandescent light bulb socket and to have the general look of the ordinary incandescent light bulb, but with all of the advantages of an induction lamp, as described herein. The present disclosure describes structures for an induction RF fluorescent lamp that includes a bulbous portion, an electronics portion, and a screw base, creating an external look that is similar to the profile of an ordinary incandescent light bulb, and with structures within the bulbous portion that facilitate rapid luminous development during the turn-on phase of the induction fluorescent lamp. | 05-29-2014 |
20140145621 | FAST START DIMMABLE INDUCTION RF FLUORESCENT LIGHT BULB - A fast starting dimmable induction RF fluorescent lamp comprising a dimming facility enabling the induction RF fluorescent lamp to dim in response to a signal from an external dimming device, and with structures within the bulb envelope that facilitate rapid luminous development during a turn-on phase. | 05-29-2014 |
20140159579 | LIGHTING MODULE AND LIGHTING APPARATUS USING LIGHTING MODULE - A lighting module includes a power reception unit configured to receive alternating current (AC) power from an external power source, a light emitting diode (LED) array including a plurality of LEDs, and a driving circuit unit configured to supply operational power to the plurality of LEDs, and control operation of the plurality of LEDs. | 06-12-2014 |
20140167609 | LIGHT DRIVING APPARATUS AND DRIVING METHOD THEREFOR - There are provided a light driving apparatus capable of being commonly used in various types of dimmers, and a driving method therefor. The light driving apparatus includes: a driving unit supplying driving power to a light emitting device according to controlling to drive the light emitting device; and a general-purpose dimming controlling unit controlling dimming of the light emitting device by converting a range of a brightness control signal of an external dimmer into a first voltage range according to a preset ratio to control the supply of power from the driving unit. | 06-19-2014 |
20140175979 | LIGHT EMITTING PLASMA LIGHTING APPARATUS HAVING RF SHIELDING BAFFLES - A light emitting plasma lighting apparatus includes at least one conductive RF shielding baffle located in a reflector housing between an emitter and a window. The at least one RF shielding baffle includes a planar body portion aligned generally perpendicular to an outer surface of the plasma bulb to minimize interference with light emitted from the plasma bulb. The at least one RF shielding baffle is grounded to absorb a portion of an RF field emitted by the emitter. | 06-26-2014 |
20140184070 | LUMINARIE - A luminaire is provided. The luminaire includes a housing, at least one light source, and a light control module. The housing has a cavity for embedding the light control module and another cavity for embedding the light sources. The light control module includes a current control unit, at least one switch unit, a process unit, and a printed circuit board. The current control unit is used to provide DC current. The at least one switch unit is used to enable the current control unit to selectively provide a DC current to the at least one light source in accordance with at least one switch unit control signal. The process unit is used to adjust the DC current outputted by the current control unit. | 07-03-2014 |
20140239810 | POWER FACTOR CORRECTION CONVERTER WITH CURRENT REGULATED OUTPUT - A power factor correction converter in a buck-boost configuration may include a set-up circuit configured to supply an input voltage, a buck transistor connected to the set-up circuit, and configured to receive a current from the diode bridge, a first diode connected to the buck transistor, a boost transistor, a resistor connected to the boost transistor, a coil that connects the buck transistor and the boost transistor, a buck-boost PFC regulator connected to the set-up circuit, and configured to regulate a time pattern of the on/off status of the first transistor and the second transistor synchronously, a second diode connected to the coil and the boost transistor, and configured to output a first level voltage, a capacitor connected to the second diode and a load connected to the second diode. | 08-28-2014 |
20140246976 | CONTROLLING CIRCUIT FOR AN LED DRIVER AND CONTROLLING METHOD THEREOF - The present invention relates to a controlling circuit and controlling method for an LED driver implemented as a flyback topology. The controlling circuit may be at a primary side of a transformer of the LED driver, and include a sampling circuit, an on time sensing circuit of an output diode, a regulating signal generator, and a PWM controller. The sampling circuit may generate a sampling signal indicating output current by sampling at the primary transformer side. The on time sensing circuit can detect an on time of the output diode. The regulating signal generator can generate a regulating signal by regulating the sampling signal, a voltage reference, and the on time of the output diode. The PWM controller may generate a controlling signal to control operation of a switching device of the LED driver to maintain a substantially constant output current in accordance with the regulating signal. | 09-04-2014 |
20140265844 | Ripple Reducing LED Driver - An LED driver with current limiter and output ripple reduction. | 09-18-2014 |
20140300274 | NEAR UNITY POWER FACTOR LONG LIFE LOW COST LED LAMP RETROFIT SYSTEM AND METHOD - Disclosed are various embodiments of low cost high quality LED (Light Emitting Diode) retrofit lamp devices capable of operating in a wide range of power and to supersede conventional lighting devices such as incandescent, halogen, sodium or fluorescent lamps. The disclosed embodiments include various LED lamp retrofit apparatuses that maximize the electro-mechanical-optical compatibility of seven interactive systems, such as: LEDs, LED Panel, Supply Adaptor, Housing, Lens/diffuser Shield, In/Out Electrical Wiring an LED driver. LED lamp retrofit apparatuses include incandescent, halogen, fluorescent, and sodium lamps. Drivers for such LED retrofit lamps include alone or in combination is double stage boost—isolated flyback, single stage boost, no opto-coupler isolated flyback, single stage single ground flyback, single stage constant off time buck-boost, single stage single ground self-supply buck-boost, pseudo double stage boost-isolated flyback, pseudo double stage boost—non isolated flyback, pseudo double stage boost—COT buck-boost, pseudo double stage boost—SG buck-boost, series circuit monolithic, parallel circuit monolithic, single cell anode loaded voltage controlled limited current switch (VCLCsw), single cell cathode loaded voltage controlled limited current switch (VCLCsw), overall feedback series monolithic circuit, overall feedback parallel monolithic circuit, monolithic multi stripes, high reliability series monolithic circuit, minimum parts series monolithic circuit, minimum parts parallel monolithic circuit, 120 Vac series monolithic circuit, simplified series monolithic circuit, simplified parallel monolithic circuit, monolithic diodes source feedback parallel circuit, operational amplifier (OPAM) monolithic parallel circuit, diodes gate feedback monolithic parallel circuit, resistor gate feedback monolithic parallel circuit, according to one embodiment, totem pole feedback monolithic parallel circuit, monolithic 8 Pin DC chip, and monolithic 8 Pin AC chip. | 10-09-2014 |
20140312768 | LIGHT MODULE WITH LINEAR LED SERIAL GROUP DRIVE DEVICE - A light module with linear LED serial group drive device comprises an AC input rectifier unit having an input end coupled to an AC Power to convert an AC half-wave voltage signal into a DC full-wave voltage signal for output, and an intelligent control having a protection unit. when the input voltage is higher than the set start voltage of the LED serial group, the corresponding constant current control drive circuit switch is turned on immediately by the intelligent control to control the power, luminous flux, and power factor of the LED serial light module for achieving stable power output of LED light source. Moreover, the present invention without transformers, inductors and other magnetic components has thin thickness and small volume to improve the conventional problems. | 10-23-2014 |
20140312769 | LIGHTING DIMMER SYNCHRONOUS LOAD DEVICE - Method, apparatus and system for efficient driving a lighting means. In accordance with an embodiment of the present invention, there is provided a synchronous load for a lighting system, wherein the lighting system is fed by an AC supply that is potentially produced by a dimmer. The synchronous load is configured to load the AC supply only if the AC supply is found to be actually produced by a dimmer. In this case, the loading period comprises only the times when the AC supply voltage is lower than a given threshold and when current oscillation occurs. | 10-23-2014 |
20150042227 | BI-LEVEL CURRENT CONFIGURABLE DRIVER - A bi-level current configurable driver is provided. The driver includes a feedback circuit, a driver circuit providing a driver signal to a half bridge inverter, and a step-dim interface coupled to a first alternating current input line, a second alternating current input line, and a neutral line, providing voltage to the driver circuit. The driver also includes a first feedforward circuit coupled to the step-dim interface, where the first feedforward circuit receives a first signal from the step-dim interface based on the states of the first alternating current input line, the second alternating current input line, and the neutral line. In a first state, the driver provides full current to a load, and in a second state, the driver provides less than full current to the load. | 02-12-2015 |
20150061494 | PROTECTION CIRCUIT AND METHOD AGAINST INTERFERENCE IN LIGHTING SYSTEMS - A protection circuit for lighting drivers is provided, wherein a lighting driver is coupled to an AC voltage source. The protection circuit comprises a loading circuit, coupled to the AC voltage source and operable to load it with a loading current, and a monitoring and control (M&C) circuit. The M&C circuit is coupled to the AC voltage source for detecting interference pulses thereon and causes the loading circuit to load the AC voltage source with the loading current during a certain loading time starting upon detecting an interference pulse, indiscriminately of the interference pulse polarity. The protection circuit thereby prevents the AC source current from dropping to zero in response to the interference pulse. When the AC voltage source comprises a lighting dimmer, preventing the current from dropping to zero prevents cutout of the lighting dimmer due to an interference pulse that causes a momentary drop of the AC voltage. | 03-05-2015 |
20150097484 | DIMMABLE AC DRIVEN LED ILLUMINATING APPARATUS - A dimmable alternating current (AC) driven light emitting diode (LED) illuminating apparatus including a TRIAC dimmer configured to perform a dimming control using a phase control. | 04-09-2015 |
20150145412 | LAMP WITH ELECTRICAL COMPONENTS EMBEDDED IN AN INSULATION COMPOUND | 05-28-2015 |
20150305112 | OPERATING DEVICE FOR ILLUMINANT - An operating device ( | 10-22-2015 |
20150342004 | LIGHTING APPARATUS WITH INDUCTOR CURRENT LIMITING FOR NOISE REDUCTION - A lighting apparatus includes a lighting circuit (e.g., an LED lighting circuit) and a driver circuit having an output coupled to the lighting circuit and an input configured to be coupled to a power source, such as a phase cut dimmer, that provides a varying voltage waveform. The driver circuit includes an electromagnetic interference (EMI) suppression inductor configured to be coupled in series with the power source and a bypass circuit configured to divert current from the EMI filter inductor to limit a current in the EMI filter inductor. | 11-26-2015 |
20160067482 | ELECTROMAGNETICALLY-COUNTERED DISPLAY SYSTEMS AND METHODS - The present invention relates to an electromagnetically-countered display system including at least one wave source and at least one counter unit, where such a wave source irradiates harmful electromagnetic waves and the counter unit emits counter electromagnetic waves for countering the harmful waves therewith. More particularly, the present invention relates to various counter units for the electromagnetically-countered display system and to various mechanisms to counter the harmful waves with the counter units, e.g., by matching configurations of the counter units with those of the wave sources, by matching wavefronts of the harmful waves with those the counter waves, and so on. The present invention also relates to various methods of countering the harmful waves with such counter waves by source and/or wave matchings, various methods of providing the counter units for emitting the counter waves defining desired wave characteristics, and the like. The present invention further relates to various processes for providing the electromagnetically-countered display systems and their counter units. The present invention further relates to various electric and magnetic shields employed either alone or in conjunction with the counter units for minimizing irradiation of the harmful waves from the shaving system. | 03-10-2016 |
20160073471 | Operating Device for Luminous Elements - Operating device for a luminous element ( | 03-10-2016 |
20160174307 | CONNECTION CIRCUIT FOR CONNECTING A DRIVER DEVICE TO AN EXTERNAL POWER SUPPLY FOR DRIVING AN LED UNIT | 06-16-2016 |
20160198538 | LED DRIVE CIRCUIT | 07-07-2016 |
20160381745 | LED DRIVER WHICH CAN BE USED WITH EITHER TRAILING EDGE OR LEADING EDGE DIMMERS - A phase control dimming LED driver is able to achieve complete stabilization of both TRIAC and trailing edge dimmers by using a large inductor to limit the inrush normally associated with the switching on of the TRIAC during each half cycle. Such a large inductor is not normally used because when a trailing edge dimmer is applied, a damaging voltage surge known as “ring up” can be generated when the trailing edge dimmer switch turns off. In this invention the inductor is placed after the input rectifier bridge and equipped with a diode and resistor which allow the energy in the inductor at the moment when a trailing edge dimmer switches off to be harmlessly dissipated. | 12-29-2016 |