Hoffmann, Augsburg
Hans Hoffmann, Augsburg DE
Patent application number | Description | Published |
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20100327771 | METHOD FOR CONTROLLING GAS DISCHARGE LAMPS - The invention relates to a method and a device for controlling gas discharge lamps using a direct current/alternating current inverter (DC/AC inverter) that is operated at a predetermined frequency and that generates an AC output voltage U for operating the gas discharge lamps from a DC input voltage which has a residual ripple. According to the invention, the DC/AC inverter is operated in zero voltage switching (ZVS) mode, wherein the DC input voltage is used as the control variable for the lamp current I | 12-30-2010 |
20120098633 | Transformer - A transformer ( | 04-26-2012 |
20120217884 | CONTROL CIRCUIT FOR LIGHT EMITTING DIODE ARRANGEMENTS - A control circuit ( | 08-30-2012 |
20120319501 | ELECTRIC DEVICE HAVING LOW POWER CONSUMPTION IN THE STAND-BY STATE - An electrical device, particularly having at least one lighting system having light emitting diodes, such as a television having LED backlighting ( | 12-20-2012 |
20130057231 | ELECTRIC DEVICE HAVING AN INTERFERENCE SUPPRESSION CAPACITOR CIRCUIT - The invention describes an electrical device having at least one interference suppression capacitor ( | 03-07-2013 |
Maria Hoffmann, Augsburg DE
Patent application number | Description | Published |
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20090284154 | Low-Pressure Gas Discharge Lamp With a Reduced Argon Proportion In the Gas Filling - The invention relates to novel gas fillings of low-pressure gas discharge lamps for reducing the starting and arc drop voltages at low Hg vapor pressures. In favor of a mixture consisting of Ne and Kr, the Ar portion of the gas filling is considerably reduced. | 11-19-2009 |
20100002427 | Illuminating Device Comprising a Lamp and a Reflector - A lighting device with at least one lamp and at least one reflector, wherein at least regions of a reflective surface of the reflector are in the form of an involute of a circle of a partial element of the lamp. | 01-07-2010 |
Roland Hoffmann, Augsburg DE
Patent application number | Description | Published |
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20090284154 | Low-Pressure Gas Discharge Lamp With a Reduced Argon Proportion In the Gas Filling - The invention relates to novel gas fillings of low-pressure gas discharge lamps for reducing the starting and arc drop voltages at low Hg vapor pressures. In favor of a mixture consisting of Ne and Kr, the Ar portion of the gas filling is considerably reduced. | 11-19-2009 |