Dimming has always been a challenging task for lighting system designers who need to dim lamps with almost any light source (except tungsten). Dimming is important in many applications because it allows customers to set the desired brightness based on actual needs and can also significantly save on electricity bills. The most common dimming controllers today are phase-cut dimmers, which are usually referred to as TRIAC dimmers regardless of whether the device in question actually contains a triac device. Connecting phase-cut dimmers to compact fluorescent lamps and today\'s LED lamps is a difficult design challenge. The solutions currently available on the market are not ideal: some solutions have a very limited dimming range; some solutions even flicker. In response to these challenges, National Semiconductor, Cree, and Arrow Electronics have jointly announced a new solution that can more effectively achieve dimmable solid-state lighting using traditional phase-cut dimmers.
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