31 May '17, 9am

[Article] Bits and Watts, Watts and Bits #painting

Consider the humble USB cable— that ubiquitous connection between computers, telephones, and other electronic equipment. These cables were designed to convey information from one device to another, plus a few watts of power in case the peripheral device lacked its own power source. The latest generation, USB-PD (for power delivery) is a different animal. It can supply almost 100 watts. That’s enough to run a refrigerator! The iconic data link, the Ethernet cable, is being similarly transformed so that Power over Ethernet (PoE) already substitutes for traditional power sources in the most advanced commercial lighting systems. In both cases, bundling power and information in these cables offers many new energy-saving options. For example, each lightbulb can be addressed so that its brightness—and even its spectrum—can be individually managed.

Full article: http://homeenergy.org/show/article/nav/editorials/id/2190

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