| 11601057 |
Switched-mode power supply having a plurality of output stages |
Markus Heckmann |
2023-03-07 |
| 9686827 |
Circuit arrangement for operating light sources |
Markus Heckmann, Joachim Mühlschlegel, Harald Schmitt |
2017-06-20 |
| 9125282 |
Method for actuating a discharge lamp and circuit arrangement for operating such a lamp |
— |
2015-09-01 |
| 8461771 |
Electronic ballast for a discharge lamp |
— |
2013-06-11 |
| 8319446 |
Circuit for controlling a fluorescent lamp, method for operating the circuit, and system comprising the circuit |
Wolfgang Hierl, Bernhard Schemmel, Harald Schmitt, Raphael Stocker, Arwed Storm |
2012-11-27 |
| 8134297 |
Ballast for a discharge lamp with adaptive preheating |
Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer +7 more |
2012-03-13 |
| 7786683 |
Circuit arrangement and method for operating at least one electric lamp and at least one LED |
Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer +7 more |
2010-08-31 |
| 7327094 |
Circuit arrangement and method for operating at least one electric lamp |
Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer +7 more |
2008-02-05 |
| 7309963 |
Smoothing circuit for improving EMC |
Olaf Busse, Markus Heckmann, Reinhard Lecheler, Alfons Lechner, Siegfried Mayer +7 more |
2007-12-18 |
| 7279848 |
Electronic ballast for a lamp |
Markus Heckmann |
2007-10-09 |