September & October, 2009
Features
Get ready for a HIGH-BRIGHTNESS WORLD
You can thank the DoE and its expanding Energy Star standards for outdoor lighting for a lot of the recent progress in high-brightness LEDs. Add to that...
The Greening of Server Farms
Here's the bad news: The Environmental Protection Agency expects the nation's data centers to consume more than 100 billion Kilowatt-hours by 2011, costing...
New Focus on MIPS-per-Watt
The pressure to build energy saving servers and data centers is tremendous. As a result, aggressive targets have been set by regulatory agencies like...
Efficiency in Coreless Servomotors
Most servomotors have an efficiency in the range of 50 to 60%. But it is possible to devise positioning-motor architectures that deliver far better efficiency....
A More Efficient Servomotor
According to the U.S. Dept. of Energy (DOE), as much as 65% of a typical manufacturing plant's monthly electric bill goes to pay for all the electricity...
Dealing with Low-Current Optocouplers
Designers of switch-mode power supplies generally put a lot of care into selecting the placement of poles/zeros of the supply transfer function to ensure...
High on Hypoids
Trying to improve your overall efficiency? A high-efficiency NEMA premium motor helps only marginally if it is paired with an inefficient gearbox, such...
Simpler Route to Solar Charging
Examine a large commercial building being constructed today and you are likely to see solar arrays harvesting sunlight. However, solar panels have also...
Editorial
Does Energy Efficiency Thrive on Adversity?
The clouds of economic recession do indeed have silver linings. One in particular is that trying times tend to produce a lot of innovative start-up companies....
Articles
Energy Websites
WHAT'S NEW AT EETWEB.COM: NEW VIDEOS See these new entries at EE&T's video library: Solar community The Drake Landing Solar Community is a 52-home subdivision...
World's Most Efficient Clothes Washer?
Engineers at Xeros Ltd. in Leeds, U.K., (www.xerosltd.com) have developed a washing machine they claim will save energy, water, and detergent, and still...
DARPA? Manufacturers need a MARPA
Of all the economic components that drive our financial system, the manufacturing sector is among the most important and now perhaps the most vulnerable...
Efficiency Boost for Solar Cells
Photovoltaic solar cells may be getting more efficient thanks to a couple of recent developments in cell fabrication. First, DuPont and Applied Materials,...
DARPA puts a New Spin on Low-Energy Electronics
Future generations of computer memories could consume drastically less power if a DARPA program run by the Agency's Microsystems Technology Office (MTO)...
Wind Turbines go Super-Sized
When it comes to wind turbine efficiency, bigger is generally better. Economies of scale let the cost-per-watt of generated power trend lower as wind...
Home-Grown Energy Efficiency
There's a myth making the rounds in the building community that proposed legislation for energy efficient new homes could boost the cost of building substantially....
What you need to know about MPPT for PV Arrays
Few can question the increasing role of photovoltaic (PV) technology as a scalable, robust means of renewable energy. Yet PV cells are but one element,...
On The Energy Front
WILL BRITAIN GO BLACK? A number of experts are expecting blackouts in Britain by the year 2015, reports the UK magazine The Economist, because a number...
Products
High-density motor hits 90% efficiency The heart of the 2000-W RE 50 is an ironless rotor for detent-free running and minimized mass inertia. A two-pole...
Lighten Up Energy Myths
THOSE DAM GREENHOUSE GASES Most folks consider hydroelectric power to be clean and renewable and, in general, a good thing. But it turns out that all...
Advertisement
In This Issue
Featured Content
Accelerating Adoption of Solid-State Lighting, Part 1
Cary Eskow of Avnet Inc. looks at the trends and technologies that should give LEDs the edge in lighting the future.
Advertisement
Videos
Maxim Integrated Products is a Gold Level sponsor of OptaMotive, a Silicon Valley startup that is building the E.Rex to compete for the Progressive Insurance Automotive X PRIZE.
Featured Suppliers
Advertisement
Advertisement
Advertisement
Advertisement
