| 摘要 |
<p>DC/AC converter for igniting and supplying a gas discharge lamp (1), which converter has two input terminals (C, D) intended to be connected to a DC voltage source, said input terminals (C, D) being connected together by means of a series arrangement with a load circuit comprising at least an induction coil and a parallel arrangement of the lamp (1) and a capacitor (12), as well as a first semiconductor switching element (13), said load circuit being shunted by a circuit comprising a second semiconductor switching element (14), said semiconductor switching elements (13, 14) being rendered alternately conducting and non-conducting by means of control circuits (13a, 14a), whilst a second capacitor (11) is arranged in series with the induction coil (10) and the lamp (1), which capacitor is shunted by a third switching element (15) which is non-conducting during the period of pre-heating the electrodes (2, 3) and is conducting at least during ignition of the lamp (1).</p> |
