| TRIDONIC GMBH AND CO KG Patent applications |
| Patent application number | Title | Published |
|---|
| 20120133295 | POWER REGULATION OF LED BY MEANS OF AN AVERAGE VALUE OF THE LED CURRENT AND BIDIRECTIONAL COUNTER - A circuit for the power regulation of an LED comprises a converter having a switch. The LED is interconnected in an output circuit, wherein a control unit controls the magnetization of an inductor, in that it actively clocks the switch. A measured actual value representative of the average value of the LED current is returned to the control unit and compared to a reference value. | 05-31-2012 |
| 20110304272 | Method, operating device, and lighting system - The application relates to a circuit for operating a light-emitting means, having a half-bridge or full-bridge circuit for providing a supply voltage for the at least one light-emitting means, and a control circuit for the closed-loop control of the operation of the light-emitting means and/or fault identification. A measurement signal which represents the current through the bridge circuit and/or a measurement signal which represents the lamp current and a measurement signal which represents the voltage across the at least one light-emitting means are supplied to the control circuit at the same input. | 12-15-2011 |
| 20110254457 | CIRCUIT FOR THE OPERATION OF AT LEAST ONE LED - A circuit for operating at least one LED (“driver circuit”) includes input terminals to be connected to an input or operating voltage in the form of a direct current (DC) voltage or a rectified alternating current (AC) voltage, and output terminals to be connected to a load circuit containing the at least one LED. The circuit includes a clocked switch and an open-loop control circuit for clocking the switch. The open-loop control circuit is in the form of an integrated circuit (IC) and is provided with input and output pins. The open-loop control circuit generates a clock signal for the switch depending on at least two actual value signals, such that there is a control loop with the manipulated variable “clocking of the switch.” | 10-20-2011 |
| 20110210681 | ILLUMINANT OPERATING APPLIANCE WITH POTENTIAL SEPARATION - An operating device for operation of at least one illuminant, such as one or more LEDs, includes first and second converters and first and second logic circuits. The first converter is supplied directly or indirectly with mains voltage, with a first reference potential. The second converter is galvanically isolated from the first converter, with a second reference potential for supplying a load circuit with the illuminant. The first logic circuit is for controlling the first converter, and the second logic circuit is for controlling the second converter. The first logic circuit and the second logic circuit are connected to one another, with potential isolation, via an interface. | 09-01-2011 |
