| 摘要 |
A method and apparatus for aiding ignition in a discharge lamp is provided. In one embodiment, a method comprises: applying a voltage across a pair of electrodes of a discharge lamp and capacitively coupling the discharge lamp. The capacitive coupling of the discharge lamp induces a current in the lamp to lower an ignition voltage of the discharge lamp. In another embodiment, a circuit for aiding ignition in a discharge lamp comprising a first electrode and a second electrode is also provided. The circuit comprises a lamp drive circuit comprises a voltage source coupled to a first terminal and a current controller coupled to a second terminal. The first and second terminals are configured to couple to a corresponding one of the first electrode and the second electrode of the discharge lamp. The voltage source is configured to provide a voltage signal at the first terminal and the current controller is configured to control a current received via the second terminal. The circuit further comprises a conductive element configured to capacitively couple the discharge lamp. The conductive element is also configured to induce a current in the discharge lamp to lower an ignition voltage of the discharge lamp when the voltage is applied to the discharge lamp.
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