公开(公告)号：US06452344B1

公开(公告)日：2002-09-17

申请号：US09249563

申请日：1999-02-12

申请人： Russell L. MacAdam ,  Mark S. Taipale ,  Oliver K. Mihm ,  David G. Luchaco ,  Jason C. Killo ,  Kolawole A. Otitoju

发明人： Russell L. MacAdam ,  Mark S. Taipale ,  Oliver K. Mihm ,  David G. Luchaco ,  Jason C. Killo ,  Kolawole A. Otitoju

IPC分类号： G05F100

CPC分类号： H05B41/3922 ,  H05B41/298 ,  H05B41/2985 ,  H05B41/3925 ,  H05B41/3927 ,  Y10S315/04

摘要： An electronic dimming ballast has a parallel loaded resonant output circuit plus a combination of pulse width modulation and frequency variation to accomplish the dimming of compact fluorescent lamps. The ballast operates at a fixed frequency throughout a selected range of light levels, with dimming control being done completely by duty cycle variation over this range of operation, and then smoothly moves to a variable frequency as the light output moves outside the selected range, with both duty cycle and frequency variation being the means of lamp light output control outside the selected range.

摘要翻译： 电子调光镇流器具有并行加载的谐振输出电路加上脉冲宽度调制和频率变化的组合，以实现紧凑型荧光灯的调光。 镇流器在所选择的光级范围内以固定的频率工作，通过在该操作范围内的占空比变化完全完成调光控制，然后当光输出移动到选定范围之外时平滑地移动到可变频率， 占空比和频率变化都是灯光输出控制在选定范围之外的手段。