Patent ID: 8264159

Claim:
A circuit arrangement for operating at least one LED and at least one fluorescent lamp, the circuit arrangement comprising: an input having a first and a second input terminal for connecting an AC supply voltage; a main rectifier having a first and a second input terminal and a first and a second output terminal, wherein the first and the second input terminal of the main rectifier are coupled to the first and the second input terminal for connecting the AC supply voltage; an auxiliary rectifier having a first and a second input terminal and a first and a second output terminal, wherein the first and the second input terminal of the auxiliary rectifier are coupled to the first and the second input terminal for connecting the AC supply voltage; an inverter comprising at least one series circuit formed by a first and a second switch wherein the series circuit is coupled to the first and the second output terminal of the main rectifier, and the output of said inverter having at least one terminal for connecting the fluorescent lamp, wherein the first and the second switch each have a control electrode, an operating electrode and a reference electrode; a starting device having a first and a second terminal, wherein its first terminal is coupled to a control electrode of one of the switches of the inverter; a pull-down circuit having a first and a second terminal, wherein its first terminal is coupled to the output of the inverter; a starting capacitor for providing energy for the starting device; and a timer, the input of which is directly coupled to at least one of the first and the second input terminal of the input, and the first output terminal of which is directly coupled to the control electrode of the LED switch, and the second output terminal of which is directly coupled to the reference electrode of the LED switch; wherein the second terminal of the starting device and the second terminal of the pull-down circuit are directly coupled to the first output terminal of the auxiliary rectifier; wherein the starting capacitor is directly coupled between the first and the second output terminal of the auxiliary rectifier; and wherein there is arranged in parallel with the starting capacitor a series circuit comprising a first and a second terminal for the at least one LED and an LED switch, wherein the LED switch has a control electrode, an operating electrode and a reference electrode.