Patent ID: 8754582
Filing Date: 2014-06-17
Classification: H05B

Abstract:
1. A detector circuit for actuating at least one fluorescent lamp, wherein the detector circuit is configured such that the actuation of at least one fluorescent lamp occurs as a function of a first signal at a first input and as a function of a second signal at a second input if the first signal and the second signal are each greater than a first prescribed voltage and less than a second prescribed voltage during a start-up phase, wherein the detector circuit is configured such that during a start-up phase it can be determined whether one fluorescent lamp or two fluorescent lamps is/are connected in that the detector circuit compares the voltages at the inputs, the detector circuit being configured in such a way that it can be determined that two fluorescent lamps are connected if the two voltages compared during the start-up phase are approximately equal, and wherein otherwise only one fluorescent lamp is connected.