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October 9, 2012

Qi Footprint Expands As Wireless Power Consortium Issues Guidelines For Wireless Charging in Automobiles

The Wireless Power Consortium (WPC) announced it approved a series of guidelines for Qi (pronounced "chee") wireless chargers intended for automotive aftermarket use. Products meeting the guidelines will be able to include the description, "Meets Qi Automotive Aftermarket Guidelines" along with the Qi logo.

Powered by a charging ecosystem of more than 110 certified products and 8.5 million units sold worldwide, Qi is backed by an expanding list of more than 120 industry-leading members.

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"As Qi is built directly into an increasing number of mobile phones, consumers want to wirelessly charge their devices everywhere they go, especially in their automobiles," said WPC Automotive Application Group Chair Luc Jansseune. "These new guidelines will help accelerate adoption of Qi by assuring consumers the products they buy have met rigorous testing for optimal performance in vehicles."

As automotive OEMs begin to incorporate Qi transmitters in vehicles, several WPC member companies have automotive Qi wireless charging systems in development. The newly approved guidelines will address product safety, emissions, interference and the vehicle interface.

"Our goal is to make Qi wireless charging available wherever you live, work or travel," said WPC Chairman Menno Treffers. "Now that we're approaching 10 million Qi units worldwide, automotive companies are very interested in integrating Qi in automobiles. These guidelines will make it much easier for them to accomplish that goal."

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With Qi, devices are charged by placing them on any Qi-enabled surface such as a standalone charging pad or a charging spot integrated into everyday spaces such as cafes, restaurants, airports, automobiles, homes, and offices.

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Design Features

October 22, 2012

Energy Efficiency with Class D Amplifier Modules

Class-D switching amplifiers are helping audio designers create personal multimedia devices and home audio/visual systems that demonstrate how compact and stylish equipment can also deliver high sound quality and high audio output power. The key to this breakthrough, providing freedom from the large and bulky boxes housing traditional audio products, lies in the class-D amplifier’s high energy efficiency, which is typically around 90%. This allows designers to reduce or eliminate heatsinks as well as using smaller-sized PCBs and smaller components such as transformers, connectors and power supplies.

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Design Features

October 8, 2012

The Role of Hall Effect Sensors in Power Distribution Infrastructure

Power distribution units (PDUs) form an essential part of modern computing and data communications hardware. They provide multiple outputs for transferring electrical power with maximum efficiency, controlling the power capacity and safeguarding against the possible causes of supply interruption. With an ever increasing need from tech savvy consumers for higher data throughput and greater quantities of data storage capacity, as well as tough international legislation now governing CO&sub2; emissions, the demands being placed on these units are proving challenging for engineering teams to satisfy.

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Product Focus

August 13, 2012

The Year in AC-DC Power Supply Technology

The past year witnessed significant new product releases, technological developments, and industry news related to the field of AC-DC Power Supply technology.

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