Lead-acid batteries seal in more power, extend life
Product News 7/28/2006 Post a comment
EnerSys has upgraded its flooded lead-acid C family of PowerSafe and DataSafe batteries, adding a Slide-Lock post seal design to its PowerSafe CC and CA and DataSafe CX lines to prevent leakage, and a slightly taller jar to increase the electrolyte reserve and enable the batteries to deliver 100 percent initial capacity.
Fooling Faraday: On-chip capacitor multipliers
Design How-To 7/27/2006 Post a comment
Capacitors are used to mitigate noisy voltages and supply and/or shunt the transient currents, but each capacitor incurs cost and PCB real estate. Integration on an SoC is a possibility but is usually too expensive for volume, cost-effective solutions. What to do? A current-conveyor multiplier may be the answer and here's how to implement it.
EnerSys acquires Chinese battery maker
News & Analysis 7/26/2006 Post a comment
Battery supplier EnerSys has entered a definitive agreement to purchase the assets of Chaozhou Xuntong Power Source Company Ltd., (CFT), a sealed lead acid battery business located in Chaozhou, China.
Flywheel system delivers 50 percent more power
Product News 7/26/2006 Post a comment
Pentadyne Power Corporation's second-generation VSS+DC flywheel-based clean energy storage system delivers 50 percent more power for the same price and in the same footprint as the company's previous generation system.
The case for automated battery management
Design How-To 7/19/2006 Post a comment
Studies indicate that 90% of data loss occurs because of a failure of a battery system while supporting the critical load. Here's timely information to ensure that your battery system is kept in peak operating condition to prevent this catastrophic event.
Medical supplies deliver 400 watts in a 1U package
Product News 7/17/2006 Post a comment
V-Infinity's 400-watt single-output switching power supplies in the VUFM-S400-XXR and VUMM-S400-XXR families, available in U-frame and metal-enclosed versions, respectively, are designed for compact, low-profile medical applications.
Power over Ethernet: the reality of designing a powered device
Design How-To 7/16/2006 Post a comment
There have been many technical articles that explain the theory on how to make a powered device. They give an overview of the PoE standard and explain how to extract the power from the cable. Here's a practical guide to help take that information and design a PoE-enabled powered device.
Supercaps are cost-effective for portables
Product News 7/13/2006 Post a comment
Citing a breakthrough in the cost of supercapacitors - under a dollar in production quantities for its product as compared to double or triple that amount for competing units - Cellergy says its small-footprint series as well as its low-profile (1.9 mm) series are a viable design option to lithium-ion cells in portable consumer devices.
mPhase to test nanobattery at Rutgers University
News & Analysis 7/11/2006 Post a comment
Nanotechnology company mPhase Technologies Inc. has been awarded the right to conduct a free series of technical tests at Rutgers, the State University of New Jersey, related to the company's development of lithium-based alternative chemistries for its prototype nano-structured battery.
Configurable AC/DCs meet mil standards
Product News 7/11/2006 Post a comment
Lambda's NV-175 and NV-350 families of configurable AC/DC power supplies now comply with the U.S. military's stringent MIL-STD-810E standards for shock, transit drop, bench handling, basic transportation, and shipboard vibration.
A tutorial for small signal models in the SEPIC power stage
Design How-To 7/8/2006 Post a comment
Even though the single-ended primary inductance converter has become a popular topology for distributed power and battery chargers it can have unruly responses in the voltage mode. The author says it can be alleviated by use of current mode control, and goes on to give the intricate details. This is a must read article for a full understanding of this important topic.
BEAR adds 5-30 watt DIN supplies
Product News 7/7/2006 Post a comment
BEAR Power's BP7 supplies are single-output 5-30 watt DIN models, in four power levels and 24 versions, suited to industrial process control, manufacturing, and measurement systems.
United Solar signs PV laminate supply deals
News & Analysis 7/6/2006 Post a comment
United Solar Ovonic, a wholly owned subsidiary of Energy Conversion Devices Inc. (ECD Ovonics), has signed multi-year cooperative agreements with Italy-based Spazio Energia and Sunerg Solar to supply a total of 46 megawatts of photovoltaic (PV) laminates.
AC/DC delivers up to 400 amps or 3 kW
Product News 7/5/2006 Post a comment
Absopulse Electronics' low-profile LVS 2U5 is a rugged, AC/DC power supply for high-current, low-voltage applications typical of industrial, utility, microwave, and telecom environments.
The arrival of the 3G handset and power management challenges
Design How-To 7/3/2006 Post a comment
The buzz word for cell phone applications in 2006 is definitely digital TV. The onus is now on the power management supplier to define new solutions that will maintain long run times in 3G phones if not make them longer. Here are some solutions with the possible trade offs you need to know about before deciding how to implement your design.
Philips buys U.S. surge protector specialist
News & Analysis 7/3/2006 Post a comment
Royal Philips Electronics has bought, for an undisclosed sum, Power Sentry, a division of Fiskars Brands Inc., that specializes in and is the number two player in the North American plug-in power surge protector market.