Patents by Inventor Kay Schmidtmann
Kay Schmidtmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8134297Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.Type: GrantFiled: August 30, 2006Date of Patent: March 13, 2012Assignee: Osram AGInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
-
Patent number: 7863830Abstract: The invention relates to an electronic ballast device for operating an electric lamp (2), comprising a first (21) and a second lamp filament (22), wherein the lamp filaments (21, 22) are electrically connected to a heating circuit (3) during a pre-warming phase for the electric lamp (2) said heating circuit (3) being of such a form that the heating current generated by the heating circuit (3) during an operational phase of the electric lamp (2) amounts to between 20% and 60% of the lamp current of said electric lamp (2). The invention further relates to a method for operation of an electric lamp with an electronic ballast device.Type: GrantFiled: October 12, 2006Date of Patent: January 4, 2011Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Bernhard Schemmel, Kay Schmidtmann
-
Patent number: 7786683Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.Type: GrantFiled: June 27, 2006Date of Patent: August 31, 2010Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
-
Publication number: 20100156299Abstract: The present invention relates to an electronic ballast for discharge lamps (LA) which have preheatable electrodes (E1, E2). The electronic ballast has a measuring apparatus (M), which is designed to measure, during the preheating process, a variable, which is correlated with the electrode temperature increased by the preheating, of at least one of the electrodes (E1, E2) of a connected discharge lamp (LA), and a control apparatus (C), which is designed to match the electrode temperature, during the preheating process, in response to the measurement by adjusting an operational parameter of the electronic ballast. Furthermore, the electronic ballast is designed to detect cross discharges or a sufficient operating temperature of one of the electrodes (E1, E2) and possibly to ignite the discharge.Type: ApplicationFiled: August 30, 2006Publication date: June 24, 2010Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
-
Publication number: 20090267518Abstract: The invention relates to an electronic ballast device for operating an electric lamp (2), comprising a first (21) and a second lamp filament (22), wherein the lamp filaments (21, 22) are electrically connected to a heating circuit (3) during a pre-warming phase for the electric lamp (2) said heating circuit (3) being of such a form that the heating current generated by the heating circuit (3) during an operational phase of the electric lamp (2) amounts to between 20% and 60% of the lamp current of said electric lamp (2). The invention further relates to a method for operation of an electric lamp with an electronic ballast device.Type: ApplicationFiled: October 12, 2006Publication date: October 29, 2009Applicant: OSRAM GESELLCHAFT MIT BESCHRAENKTER HAFTUNGInventors: Bernhard Schemmel, Kay Schmidtmann
-
Patent number: 7327094Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp (LP) having a drive circuit (16), which has at least one terminal for a system voltage (UN) on the input side and at least one terminal for the at least one electric lamp (LP) on the output side; the drive circuit (16) having a control unit (18) and a step-up converter having a step-up converter inductor (L2) and a switch (S1), and the control unit (18) being designed to operate the step-up converter in a discontinuous mode, in which the current (IN) through the step-up converter inductor (L2) has gaps, the duration (?t) of these gaps being varied. It also relates to an operating method for at least one electric lamp (LP) using such a circuit arrangement.Type: GrantFiled: July 6, 2006Date of Patent: February 5, 2008Assignee: Patent-Treuhand-Gesellschaft fur Elektrische Gluhlampen mbHInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
-
Patent number: 7309963Abstract: The present invention relates to an electronic ballast for discharge lamps, for example low-pressure discharge lamps, having a converter having a switching element and a two-part lamp inductor which is connected upstream and downstream of the discharge lamp. An electronic ballast according to the invention has a smoothing circuit which reduces voltage jumps caused by switching operations in the converter at the lamp terminals.Type: GrantFiled: June 20, 2006Date of Patent: December 18, 2007Assignee: Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbHInventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
-
Publication number: 20070210719Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp and at least one LED including: an inverter having a bridge circuit having at least one first bridge transistor and one second bridge transistor arranged in series with one another, a center point of the bridge circuit being defined between the first and second bridge transistors; a lamp supply unit for supplying the electric lamp with energy from the bridge circuit, which includes a supply line with an inductance, via which the center point (M) of the bridge circuit is coupled to a first connection for the electric lamp; the lamp supply unit including an LED supply unit, which is designed to supply the at least one LED with energy. Moreover, it relates to an operating method for at least one electric lamp and at least one LED using such a circuit arrangement.Type: ApplicationFiled: June 27, 2006Publication date: September 13, 2007Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
-
Publication number: 20070018592Abstract: The present invention relates to a circuit arrangement for operating at least one electric lamp (LP) having a drive circuit (16), which has at least one terminal for a system voltage (UN) on the input side and at least one terminal for the at least one electric lamp (LP) on the output side; the drive circuit (16) having a control unit (18) and a step-up converter having a step-up converter inductor (L2) and a switch (S1), and the control unit (18) being designed to operate the step-up converter in a discontinuous mode, in which the current (IN) through the step-up converter inductor (L2) has gaps, the duration (?t) of these gaps being varied. It also relates to an operating method for at least one electric lamp (LP) using such a circuit arrangement.Type: ApplicationFiled: July 6, 2006Publication date: January 25, 2007Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
-
Publication number: 20060290299Abstract: A circuit arrangement for operating at least one LED and at least one electric lamp having at least one first filament and one second filament, includes first and second terminals for the corresponding filaments; and a lamp supply unit supplying power to the electric lamp; it also including an LED supply unit coupled to the second terminal for the second filament of the electric lamp and designed to supply power to the at least one LED. Also described is an operating method for the circuit arrangement operating at least one LED and at least one electric lamp as described. The circuit arrangement also includes an LED supply unit, which is coupled to the second terminal for the second filament of the electric lamp and supplies power to the at least one LED.Type: ApplicationFiled: June 27, 2006Publication date: December 28, 2006Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni
-
Publication number: 20060284572Abstract: The present invention relates to an electronic ballast for discharge lamps, for example low-pressure discharge lamps, having a converter having a switching element and a two-part lamp inductor which is connected upstream and downstream of the discharge lamp. An electronic ballast according to the invention has a smoothing circuit which reduces voltage jumps caused by switching operations in the converter at the lamp terminals.Type: ApplicationFiled: June 20, 2006Publication date: December 21, 2006Inventors: Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer, Thomas Pollischansky, Bernd Rudolph, Bernhard Schemmel, Kay Schmidtmann, Harald Schmitt, Thomas Siegmund, Arwed Storm, Horst Werni