发明名称 METHODS OF CONTROLLING THE BRIGHTNESS OF A GLOW DISCHARGE
摘要 <p>Methods of controlling the brightness of a glow discharge which switches from a low brightness state to a high brightness state a given time after the start of an excitation pulse are described. In the first method, conventional pulse duration modulation produces a dimming ratio much greater than the ratio of duty factor variation. In the second method, a plurality of sets of pulses having different fixed durations but variable repetition rates are employed. In the third method, a plurality of sets of pulses having different relative durations have their pulse durations modulated in synchrony.</p>
申请公布号 WO1997015172(A1) 申请公布日期 1997.04.24
申请号 GB1996002499 申请日期 1996.10.14
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