Nanotech, battery companies team on lithium technology
News & Analysis 9/27/2006 Post a comment
nanotechnology-based clean energy company, and Decktron, a lithium battery and display company have signed an agreement to develop and commercialize lithium battery technology originally developed at the U.S. Department of Energy's Argonne National Laboratory.
TDK-Lambda's DC/DCs deliver 1.5 to 25 watts
Product News 9/26/2006 Post a comment
TDK's CC-E series of compact DC/DC converters is now available from Lambda under the new collaborative TDK-Lambda product brand. These 1.5- to 25-watt converters are designed for applications ranging from process control to communications equipment.
Field-oriented control optimizes industrial motors
Design How-To 9/25/2006 Post a comment
Variable-speed drives for three-phase motors are ubiquitous components of industrial systems that help save energy and optimize performance. Traditional, scalar control techniques for variable-speed operation of three-phase electric motors offer simple implementation but limit the achievable performance. With a scalar drive, algorithm limitations can mean that meeting dynamic response specifications requires choosing a larger motor and a larger drive to complement it. That tends to drag down eff
Energy harvesting: A battle against power losses
Design How-To 9/24/2006 1 comment
Can we design indefinite operational life and wireless power grids? Micro-scale harvesters can only generate low-to-moderate power, so that's a problem but low frequency ambient vibrations are relatively abundant. Here's what the power mechanisms are in a harvester circuit.
Fuel cell powered camera to show at conference
Product News 9/18/2006 Post a comment
Millennium Cell Inc., a developer of hydrogen battery technology, has announced that Millennium Cell and its affiliate company Gecko Energy Technologies, have developed a fuel cell powered wireless camera prototype system with infrared sensing and audio capability.
Miniature DC/DCs tout lowest cost for regulated 2-watt apps
Product News 9/15/2006 Post a comment
MicroPower Direct's D200ERW series of miniature single- and dual-output DC/DC converters, part of the company's "Budget Saver" family, features a tightly regulated 2-watt output in a single in-line package for data acquisition systems, telecom equipment, battery powered and battery backed instrumentation, industrial control systems, and board level power distribution subsystems.
How to design fast charging for high-capacity batteries
Design How-To 9/13/2006 Post a comment
The latest developments in lithium-ion and lithium-polymer focus on the need for higher float voltages and higher battery capacities to address the needs for longer operation times. But how do you design chargers to handle the higher battery capacities without taking more charging time? Here's what you need to know to make it happen.
DoCoMo invests in fuel cell company
News & Analysis 9/13/2006 Post a comment
Japan-based mobile phone company NTT DoCoMo Inc. has announced it would acquire a 36.5 percent stake in Japanese fuel cell company Aquafairy, and form an alliance to develop handsets powered by hydrogen fuel cells.
ECD Ovonics adding plant
News & Analysis 9/8/2006 Post a comment
Energy Conversion Devices Inc. (ECD Ovonics) is expanding its thin-film solar module manufacturing capacity by another 60 Megawatts per annum by adding a second facility at its Greenville, Mich., site. This second facility is expected to begin operation in mid-2008.
Hot products: Single-chip cellphone, USB flash drive
Product News 9/8/2006 Post a comment
The hottest products posted this week at eeProductCenter include a miniaturized AC/DC switching power supply that delivers 1 watt in standby mode, a new USB flash drive line, a single-chip cell phone device that promises double talk time and a 14-bit, 150-MSPS analog-to-digital converter that consumes only 430 mW.
Miniature AC/DCs deliver a regulated 15 watts
Product News 9/8/2006 Post a comment
Astrodyne's ASL 10/15 series of ultraminiature open-frame switching supplies delivers up to 15 watts at 3.3 to 24 volts for regulated board applications. The universal AC/DC supplies are also available in a medically-approved version (ASM series).
Switching supplies drive LED lighting in automobiles
Design How-To 9/7/2006 Post a comment
LEDs need power, and switching supplies are providing the right kind. The converter should be optimized for the number and type of LEDs in a string, and for the functionality of each lighting application. Here are some practical guidelines and designs.
Low-power DC/DCs raise COTS standards
Product News 9/5/2006 Post a comment
Product Review - XP Power's MTC series of 4- to 35-watt commercial-off-the-shelf (COTS) DC/DC converters, specifically for defense and avionics applications, touts features virtually unheard of at the low-power levels.