| 摘要 |
A gas-discharge lamp and method of operating the lamp for controlling the brightness of the lamp. The lamp includes a drive for supplying a varying signal in response to receiving first and second control signals. The method includes establishing a time period; for a first interval of the time period, generating a first control signal having a first duty cycle and generating a second control signal having a second duty cycle; and, for a second interval of the time period, generating a third control signal having a third duty cycle, and generating a fourth control signal having a fourth duty cycle. The third duty cycle is less than the first duty cycle, and the fourth duty cycle is less than the second duty cycle. The first and third control signals are provided to a first switch and the second and fourth control signals are provided to a second switch.
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