Save power and real estate with a programmable reset controller with debounced input Design How-To 1/31/2007 Post a comment The long time delay of the Hard Reset poses a design problem because delays into the tens of seconds call for very large value resistors and capacitors. The analog solution is both simple and low cost but it lacks flexibility and accuracy. A programmable reset timer becomes the obvious solution when considering long delay times or multiple timers. Here's an article that tells you the specifics about how to create this design.
Nujira powers ahead with $9.8 milion round B News & Analysis 1/30/2007 Post a comment Power amplifier technology developer Nujira has closed a $9.8 million Series B funding round, bringing the total venture capital invested to nearly $18 million. The company, formed in 2002, also announced it has demonstrated its ultra-high efficiency RF Power Amplifier (PA) operation in collaboration with three simultaneous full-bandwidth WCDMA carriers.
Get control of buck regulator high step-down ratios Design How-To 1/30/2007 Post a comment Feedback loops for buck type switching regulators are usually hard to compensate and typically require current mode control. Unfortunately, noise sensitivity is a problem. A recent development called Emulated Current Mode Control can improve the ability to operate with very high step down ratios while maintaining good noise immunity. Here's what you need to know.
PoE desktop supply delivers 60 watts Product News 1/30/2007 Post a comment PowerGate LLC's Cincon TR60A power-over-Ethernet supply delivers 1.2 amps at 48 volts for wireless multi-radio access points with A, B and G standards and IP phones with streaming video displays.
Ultraminiature AC/DCs meet medical approvals Product News 1/25/2007 Post a comment Astrodyne Corporation's ASM line of ultraminiature open frame switching power supplies, measuring as small as 2.28-by-2-by-0.56 inches (LWH), provide 10 to 15 watts at 3.3 to 24 VDC in 10 models for medical applications.
Gold is key to ending platinum dissolution in fuel cells News & Analysis 1/22/2007 Post a comment Brookhaven National Laboratory says it has found a way to keep the platinum used as a catalyst in fuel cells from dissolving and degrading performance. The U.S. Department of Energy thinks the breakthrough could help put the federally mandated Advanced Energy Initiative back on track toward realizing all-electric vehicles by 2020.
Get the most (charging) out of your USB port Design How-To 1/21/2007 Post a comment One of the features of the USB is its advanced power management capability. Find out what the power characteristics of USB ports are, what the challenges are, and how applications can benefit from available USB power.
Apple set for 50% margins on iPhone, says iSuppli Design How-To 1/18/2007 Post a comment The cost of manufacturing each 4GB version Apple's iPhone is put by market analyst group iSuppli at about $230, meaning each of the phones sold could generate a 50.7 percent gross margin for Apple Inc. and partner Cingular Wireless.
Zero-power modules point the way for energy harvesting Design How-To 1/15/2007 1 comment Energy harvesting is still in its infancy and there are technical challenges that need to be addressed to make it a mainstream replacement for batteries and AC power. The circuitry must switch the power from an energy storage device and then supply it to the application. Here's what you need to know
Weidmuller extends adjustable-DC DIN supplies Product News 1/12/2007 Post a comment Four new adjustable AC/DC supplies from Weidmuller, additions to the company's ConnectPower (CP SNT) series, reflect the trend towards more compact sources with greater flexibility for the industrial environment.
FAQs about US-EU agreement for Energy Star program News & Analysis 1/8/2007 Post a comment A bilateral agreement has been forged between the United States and the European Union for administering the ENERGY STAR program. Here are some frequently asked questions and answers to help you understand its ramifications on you.
Top 10 methods for ASIC power minimization -- Part 1 Design How-To 1/8/2007 Post a comment This is a two-part article focusing on power minimization in deep submicron ASICs and how to strike the right balance between flexibility and power. Part 1 is dedicated to technology independent architectural power saving techniques and basic power consumption theory.
High frequency implications for switch-mode DC-DC converter design Design How-To 1/4/2007 1 comment High frequency design of switch mode DC-DC converters require attention placed on parasitic impedances, effects from PCB layout, and more. This means design engineers need to be able to move and think in the time and frequency domains. Here's help for these next generation designs.
A salute to the best of power in 2006 Design How-To 1/2/2007 Post a comment Here's another chance (those of you who receive the newsletter saw the top eight articles during the month of December) to see the top articles from 2006. Three were so good that they returned to top ten from the best of 2005.