| 摘要 |
<p>A power processor (16) for igniting a metal halide lamp (22). The power processor (16) provides for reliable ignition and stable flow to arc transition of the metal halide lamp. The lamp voltage includes a fundamental sinusoidal component, a linear switched component and a higher order odd harmonic component. The higher order harmonic component is reduced once ignition of the lamp (22) occurs and the fundamental sinusoidal component produces a stable arc. Lamp and circuit protection is provided by sensing the lamp voltage and reducing voltage to the lamp during a hot restrike condition.</p> |
