Since the earliest versions of indoor LED light bulbs were developed, their designers have faced a variety of technical challenges. These include AC-to-DC power conversion, thermal design/heat-sinking ...

The real core of engineering, in addition to technical expertise, is the ability to articulate the inevitable tradeoffs and pros/cons of design alternatives, and then weigh these relative to each ...

First, let’s make the distinction between Articles 410 and 411 of the 2011 NEC. Article 410 provides the requirements for installing luminaires, lampholders, lamps ...