| 摘要 |
A driver (10) for driving a gas discharge lamp (11) comprises at least two controllable switches (M1, M2) and a controller (12) for controlling the switches. The controller has a first operative state in which one switch (M1) is conductive while the other switch (M2) is non-conductive, and has a second operative state in which said other switch (M2) is conductive while said first switch (M1) is non-conductive. The controller comprises a memory device (20) comprising a plurality of memory elements (21) each containing a binary value (“0”; “1”), wherein the value of the last memory element (21(N)) determines the operative state of the controller. Responsive to a clock signal (SQL) generated by a clock device (30), the memory device shifts the contents of each memory element (21(i)) to a subsequent memory element (21(i+1)) and shifts the contents of the last memory element (21(N)) to the first memory element (21(1)).
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