Patent application number | Description | Published |
20090102541 | SWITCHING CIRCUIT ARRANGEMENT - A switching circuit arrangement ( | 04-23-2009 |
20090207635 | Standby Operation of a Resonant Power Convertor - A control method is proposed that enables to drive a resonant (LLC) power converter at low loads with substantially reduced power losses for realizing a stand-by power. The reduction is achieved by a sub-critical operation several times below Resonance Frequency while still keeping zero voltage switching. One half-bridge switch (s | 08-20-2009 |
20090230875 | METHOD AND A DRIVER CIRCUIT FOR LED OPERATION - In a method and a driver circuit for operating one or more light emitting diodes, LEDs, an alternating supply current is generated and transformed to an alternating secondary winding voltage. Using rectifier means, such as diodes or synchronous switches, the alternating secondary winding voltage is converted to a substantially constant load current by using a buffer element, such as an output choke, i.e. a suitable inductor. The power transferred from the power source to the LEDs may be controlled by frequency control of the alternating supply current. | 09-17-2009 |
20090316442 | METHOD FOR OPERATING A RESONANT POWER CONVERTER - According to an exemplary embodiment a method of operating a resonant power supply comprises controlling the resonant power supply in a discontinuous way. According to an exemplary embodiment a resonant power supply comprises a first switching element, and at least one energy storing element, wherein the resonant power supply is adapted to be controlled in a discontinuous way. | 12-24-2009 |
20100052866 | LIGHTING DEVICE FOR FLOORS - The invention relates to a lighting device, particularly a lighting tile ( | 03-04-2010 |
20100296294 | LIGHTING DEVICE WITH REFLECTIVE ELECTROACTIVE POLYMER ACTUATOR - The invention relates to alighting device which comprises an at least partly reflective electroactive polymer actuator ( | 11-25-2010 |
20110043881 | DEVICE AND PROCESS FOR CONTROLLED CONVEYING OF DIFFERENT VISUAL IMPRESSIONS OF A ROOM WHILE RETAINING IDENTICAL ROOM ILLUMINATION - The invention concerns a device for the controlled conveying of different visual impressions of a room while retaining identical room illumination, consisting of at least two sources of light and at least one set of shutter glasses, where at least one of the light sources (La, Lb, Lc) is chronologically pulse controlled and the shutter glasses (S | 02-24-2011 |
20110089841 | CONTROL INFORMATION FOR CONTROLLING LIGHT-SYSTEM | 04-21-2011 |
20110110108 | REMOTE COOLING BY COMBINING HEAT PIPE AND RESONATOR FOR SYNTHETIC JET COOLING - This invention relates to thermal management for removing heat generated by a heat source ( | 05-12-2011 |
20110309762 | CONVERTER FOR SUPPLYING PULSED POWER TO LIGHT SOURCE - Converters ( | 12-22-2011 |
20120212979 | FEEDBACK CIRCUIT FOR ZERO-VOLTAGE-SWITCHING CONVERTER - A feedback circuit for a zero-voltage-switching converter ( | 08-23-2012 |
20130100706 | DRIVER CIRCUIT FOR DRIVING A LOAD CIRCUIT - Driver circuits ( | 04-25-2013 |
20130119888 | POWER INTERFACE FOR A POWER SUPPLY CIRCUIT - A parallel resonant converter is operated directly from rectified mains. The single-stage power supply copes with present dimmers (such as leading edge dimmers and trailing edge dimmers) and meets EMC standards. The operating scheme allows avoiding exciting 100/120 Hz flicker without using an electrolytic capacitor. This is possible during both full operation and dimmed operation. Deep dimming down to less than 5% is possible and does not require extra power components. | 05-16-2013 |
20130271021 | POWER CONVERTER DEVICE FOR DRIVING SOLID STATE LIGHTING LOAD - A power converter device for converting power from a mains power supply ( | 10-17-2013 |
20140117867 | DRIVER DEVICE AND DRIVING METHOD FOR DRIVING A LOAD, IN PARTICULAR AN LED UNIT - The present invention relates to a driver device ( | 05-01-2014 |
20140117868 | SINGLE SWITCH DRIVER DEVICE HAVING LC FILTER, FOR DRIVING A LOAD, IN PARTICULAR AN LED UNIT - The present invention relates to a driver device ( | 05-01-2014 |
20140125241 | DC-DC DRIVER DEVICE HAVING INPUT AND OUTPUT FILTERS, FOR DRIVING A LOAD, IN PARTICULAR AN LED UNIT - The present invention relates to a driver device ( | 05-08-2014 |
20140159611 | DRIVER DEVICE AND DRIVING METHOD FOR DRIVING A LOAD, IN PARTICULAR AN LED UNIT - The present invention relates to a driver device and a corresponding driving method for driving a load ( | 06-12-2014 |