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Content tagged with Power
posted in November 2011
Rugged MIL-COTS power supply offers scalable power in small package
Product News  
11/30/2011   Post a comment
The VME550 series from Aegis Power Systems features 18-36 VDC input with capability of one to six DC outputs.
Primary-Side-Control with Active PFC Offline LED Controller
Product How-To  
11/29/2011   Post a comment
Designing a successful LED light depends on adapting what is essentially a DC device to run using the AC mains signal—which typically requires more circuitry than incandescent bulbs.
Voltage-mode CRM PFC for lighting offers higher efficiency, improves reliability
Design How-To  
11/28/2011   Post a comment
Topology is backwards compatible with older current-mode designs.
Solyndra: Its technology and why it failed
Design How-To  
11/23/2011   49 comments
Solar is not about building a better mousetrap - it's about reducing costs and increasing scale.
Image gallery: Japan bets on embedded
News & Analysis  
11/22/2011   20 comments
While covering the Embedded Technology 2011 show in Yokohama, I couldn’t help but notice one big shift in the Japanese electronics industry’s agenda since the March 11 earthquake and tsunami: the industry’s collective focus on the “smart home.”
IBM tries running data centers on solar power
News & Analysis  
11/21/2011   20 comments
IBM is harnessing the power of the sun with a massive installation of a 6,000-square-foot array of solar panels in Bangalore, India, which the firm claims can run 50 kilowatts of computer equipment for around 330 days a year, running 5 hours a day.
Understand and reduce DC/DC switching-converter ground noise
Design How-To  
11/21/2011   17 comments
There are two primary, different noise sources; you can minimize them once you know them.
IPC-9592 power-standard enhancements affect design, procurement decisions
Design How-To  
11/20/2011   Post a comment
Understand some of the complex implications of the enhancements of the this power standard
SerDes chip enables integration of multiple video streams
Design How-To  
11/18/2011   2 comments
In a parking assist system example, single twisted-pair communication and an interface chipset provide a bidirectional control channel with a minimum latency and general purpose I/O functionality, enabling seamless frame-synchronous processing of individual video data streams.
Digital PFC Controller plus power metering improves interleaved efficiency, reduces size
Product News  
11/17/2011   Post a comment
Analog Devices ADP1048 tackles power factor correction for multiphase, bridgeless mode; interfaces via PMBus
GPU technology key to exascale says Nvidia
News & Analysis  
11/16/2011   2 comments
Disruptive technologies like the GPU are important steps on the path to exascale computing said Nvidia Corp.’s CEO Jen Hsun Huang in a keynote at SC11 on Tuesday.
Chevy Volt fires cause concern
11/15/2011   29 comments
After the "shock" of that headline, more facts are needed.
Resettable low-voltage electronic fuses ease hot-swap design, provide warning
Product News  
11/15/2011   Post a comment
STMicrelectronics STEF05 and STEF12 provide graceful 5/12V fusing, indicator, recovery
Wireless-powered telemetry system monitors dragonflies
Design How-To  
11/14/2011   1 comment
An engineering team at Duke has developed a wirelessly powered telemetry system to study dragonflies in flight.
Combine power feed and data link via cable for remote peripherals
Design How-To  
11/10/2011   6 comments
It is possible to combine power distribution and high-speed data transmission by sharing a shielded twisted pair cable. A power feed network is necessary at both ends for power injection and extraction. By properly designing this network, and managing power supply switching noise, performance degradation is minimized.
Improve the tracking performance of the PWM voltage-controlled buck converters by using a passive pre-filter
Design How-To  
11/7/2011   2 comments
Understand how the addition of this filter can enhance standard compensation techniques
Back EMF method detects stepper motor stall: Pt. 2—Torque effects and detection circuitry
Design How-To  
11/4/2011   5 comments
Technique takes advantage of constant motor parameters and overcomes limitations of traditional stall detection methods of current and duty-cycle sensing.
Microsemi SA50-120 series radiation-hardened aerospace
Product News  
11/3/2011   Post a comment
Microsemi has delivered what it claims is the industry's first 120V input, 50W high-reliability DC-DC converter modules.
Calxeda could create 32-bit microserver market
News & Analysis  
11/1/2011   15 comments
Confirmation of the partnership between Hewlett Packard Co. and Texas startup Calxeda Inc. to develop ARM based servers has added more fuel to discussions about microservers, and which process technology is best poised to serve the market.
PPTC Devices Help Protect High Brightness LEDs
Design How-To  
11/1/2011   5 comments
High brightness LEDs are energy-saving, cost-effective devices that are enabling the next generation of lighting solutions. However, excessive heat or inappropriate applications can dramatically affect LED lifetime and performance. Including circuit protection in your design can help improve LED performance and lifetime.
Energy harvesting module suits thermoelectric, vibrational, photovoltaic sources
Design How-To  
11/1/2011   Post a comment
Thermoelectric generators (TEGs), inductive coils, and photovoltaic cells tend to have output voltages that range below half a volt. This module serves as a bridge between the energy source and the application.

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