1680 results found for Power, displaying items 1 - 20
July 10, 2008[Power Design] Protect Yourself From The Dangers Of Knockoff Battery Packs
In recent years, the news of individual battery incidents such as cell-phone and laptop fires has been eclipsed by factory fires and large recalls of lithium-ion (Liion) cells. Several large, well-known Li-ion cell suppliers have been affected. The most notable event was the recall of Sony batteries in 2005. Panasonic and, more recently, LG Chemical have had fires affecting their Li-ion manufacturing volume as well. While these factors present challenges for...
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Robin Tichy
July 10, 2008[Editorial] Show Videos Take Center Stage On ElectronicDesign.com
Most of you have probably noticed the influx of videos to electronicdesign.com over the past year or so. For the most part, these videos were shot at trade shows. Typically, a staff member at the show who knows something about video cameras hooks up with an editor to do video interviews. We shoot with a handheld, harddisk- based camera. When we get back to the office, a member...
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Joseph Desposito
July 1, 2008
[Technology In The News] National’s Technology Hikes Solar Array Efficiency
Jumping into the photovoltaic market, National Semiconductor Corp. has created a new technology designed to increase the overall energy output of solar power systems under adverse conditions. The SolarMagic technology extracts the maximum power efficiency from each photovoltaic panel, even when some panels in the array are compromised by shading, debris, or inherent panel-to-panel mismatching.
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ED News Staff
June 30, 2008
[Pease Porridge] Bob's Mailbox
Analog and power guru Bob Pease corresponds with readers about the latest proposals for electric cars in this exclusive online edition of his popular mailbag.
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Bob Pease
June 25, 2008
[Technology In The News] Solar Cell Investments Will Climb To Semiconductor Levels By 2010
By 2010, a booming demand for solar energy will increase worldwide investments in the production of Photovoltaic (PV) cells to the same level as those for semiconductor manufacturing, according to iSuppli. The market research group predicts global production of PV cells will rise to as much as 12 GW by 2010, up from 3.5 GW in 2007.
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ED News Staff
June 25, 2008
[Technology In The News] International Experts Will Judge 2008 Green Design Contest
Premier Farnell, an international multi-channel electronics distributor, has chosen its judging panel for the design competition called "Live EDGE" (Electronic Design for the Global Environment). The competition allows engineers and students to compete by designing electronic products that are environmentally friendly.
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ED News Staff
June 26, 2008[Ideas For Design] Adapt DC Voltage To Perform PWM DImming Of High-Brightness LEDs
High-brightness LEDs (HBLEDs) are making inroads into more traditional lighting applications that include a dc distribution system (for example, 24-V MR-16 track lights). HBLEDs are more efficient, and they have a potentially longer lifespan than do halogen or xenon lamps. Because hysteretic controllers are inexpensive, simplify lighting designs, and require no compensation networks, they’re well-suited for driving HBLEDs....
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Jim Christensen
June 26, 2008[Ideas For Design] Trick A BJT-Based Converter Into Starting At Only 250 mV DC
The converter described below, based on a silicon bipolarjunction transistor (BJT), can operate at as low as 250 mV, which is probably a record for a converter not based on a JFET or germanium transistor. How is this possible? The VBE threshold is not clear-cut, depending on current density and other factors. But 250 mV is way below the lowest accepted values. There has to be a trick and there is, sort of. The big difficulty is in the starting....
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Louis Vlemincq
June 26, 2008[Editorial] Is Solar Energy Really Ready To Rumble?
At the recent International Electronics Forum (IEF) in Dubai, UAE, I attended two days of presentations about the semiconductor industry. The speakers were from all parts of the world and offered unique perspectives. But the talk I found most interesting was given by Mark Pinto, CTO and senior vice president at Applied Materials, as his presentation tackled “Energy Conversion: Photovoltaics.” Photovoltaics (PV) have been making great strides in the last...
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Joseph Desposito
June 26, 2008[TechView: Analog & Power] Energy Harvesting Goes Commercial
Last June at Darnell’s Nanopower Forum, Face International demonstrated prototypes of its Lightning remote switching technology for home and business wiring (see “Zombies And Energy Harvesting” at www.electronicdesign.com, ED Online 15788). At that conference, Lightning was essentially a charge stored in clouds of hope. By...
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Don Tuite
June 19, 2008[Technology Report] In Search Of The Next Disruptive Technology
Megatrends donâ??t simply happen on their own. They start with disruptive technologies that completely change the status quo, like gunpowder, the airplane, and the microprocessor. The trick lies in identifying potential disruptive technologies early on and then predicting where they might lead. Back in 1976, I was part of a group at Tektronix tasked with retraining oscilloscope sales and field engineers to sell microprocessor development...
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Don Tuite
June 16, 2008
[TechScope] Hydrogen Cars Break Into The American Market
Powered by a hydrogen fuel cell, Honda’s FCX Clarity began rolling off the assembly line this week in Tochigi, Japan. The company also announced a Southern California dealership network as well as its first customers, who will get their cars next month.
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Richard Gawel
June 12, 2008
[MD&M 2008] Emerging Technology Under And Behind The Knife
One would be hard pressed to dispute that Medical Design & Manufacturing East is the world's largest conference and exhibition for medical manufacturing and related products. Taking up nearly one third of the Jacob K. Javits Convention Center in New York City, the event featured over 1,000 exhibitors from every area of the healthcare market.
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Mat Dirjish
June 12, 2008
[Technology In The News] Cell Phone Charging Standard Can Decrease Costs and Environmental Impact
The second meeting of the Alliance for Universal Power Supplies (AUPS) will feature a presentation on the benefits of China’s cell-phone charging standard. AUPS is an industry standards group committed to developing an eco-friendly universal power interface for electronic products that use external power supplies.
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ED News Staff
June 10, 2008
[Design View / Design Solution] Correct-By-Construction Layout Generation And Modification
Physical design verification software typically identifies faults in physical layouts by finding design-rule-check (DRC) violations and layout-versus-schematic (LVS) mismatches after layout is complete. So-called “correct-by-construction” layout generation is a method for generating and modifying polygonal features during the layout construction process so that the layout satisfies both design-rule constraints and connectivity requirements.
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Arya Raychaudhuri
June 12, 2008[Ideas For Design] Maintain Power-Conversion Efficiency While Saving PCB Space
Designers of portable electronics such as cell phones, portable media players, and GPS devices are always pushing to squeeze every ounce of battery life out of the application. In particular, in the realm of power conversion, engineers aspire to ensure that every coulomb that leaves the battery finds its way to a point-of-load (POL) without being lost or dissipated as heat. The solution is not always straightforward, though, because as in...
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Peter Khairolomour
June 12, 2008[Ideas For Design] Switch Tricks Electronic Ballast ICs Into Working On Low Voltages
Ballast-control ICs from International Rectifier and other similar half-bridge gate drivers feature an undervoltage lockout (UVLO) on the high-side output. This function protects the driven MOSFETs or insulated gate bipolar transistors (IGBTs) in the event that VB drops to potentially dangerous low levels. When designing an electronic ballast for operation off a 12-V dc (10.5 V to 13.6 V) battery, however, the UVLO creates a challenge ...
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T.A. Babu
June 12, 2008[Power Design] The Polymorphous Landscape Of Bus Voltages
Voltages are bussed around all the time, but the applications and voltage levels are many and diverse. One of the high-voltage apps du jour, for example, is the data center. Everybody knows about the phenomenal rise of the Internet over the last few years, but few think much about how all of the generated data gets stored and distributed. To enable this capability, the emergence and growth of datacenters or server farms—and the power they increasingly...
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Tom Curatolo
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