Circuit Arrangement and Method for Operating at Least One First and a Second Lamp

A circuit arrangement for operating at least one first and a second lamp (Lp1, Lp2), the first and the second lamp (Lp1, Lp2) in each case having a first and a second coil electrode (W1, W2), comprising

• a first and a second terminal (A1, A2) for the first coil electrode (W1) of the first lamp (Lp1);
• a first and a second terminal (A1, A2) for the second coil electrode (W2) of the first lamp (Lp1);
• a first and a second terminal (A1, A2) for the first coil electrode (W1) of the second lamp (Lp2);
• a first and a second terminal (A1, A2) for the second coil electrode (W2) of the second lamp (Lp2);
• at least one supply terminal (Uv) for supplying a supply voltage to the respective first coil electrode (W1) of the at least one first and/or second lamp (Lp1, Lp2);
• at least one preheating device (L11, L12) for the respective first coil electrode (W1) of the at least one first and second lamp (Lp1, Lp2);
• the second terminal (A2) of the first coil electrode (W1) of the first lamp (Lp1) being coupled to the second terminal (A2) of the first coil electrode (W1) of the second lamp (Lp2);
• characterized
• in that the preheating device comprises a first preheating inductance (L11) and a second preheating inductance (L12) which are arranged in series with one another, the coupling of the first and of the second preheating inductance (L11, L12) being coupled to the coupling of the second terminal (A2) of the first coil electrode (W1) of the first lamp (Lp1) and of the second terminal (A2) of the first coil electrode (W1) of the second lamp (Lp2).