EDN articles from August 2003

EDN archives from August 2003

PCs in peril. (leading edge).
August 7, 2003... "If that's the only way, then I'm all for destroying their machines." --Republican Senator Orrin Hatch of Utah on technology to punish people who illegally swap music, videos, and software over the Internet

$37 wireless module simplifies 900-MHz networks. (leading edge).
August 7, 2003... A NEW, LOW-COST VERSION of MaxStream's popular 900-MHz wireless-OEM module has applications in point-of-sale, environmental-monitoring, home-automation, and asset-management systems. The 9Xcite module has a power output of 1 mW and is...

Prove it. (leading edge).
August 7, 2003... THINK YOU'VE GOT WHAT IT TAKES to solve tough design problems? Then take the challenge and sign up now to compete in our Open Circuit Contest at www.edn.com/ opencircuit. After registration, we'll send you complete details, instructions,...

Out-of-band tuner brings set-top boxes to life. (leading edge).
August 7, 2003... NEC's UPC3220GR, available through California Eastern Laboratories (www.cel.com), combines a downconverter, an AGC, and an unconditionally stable IF amplifier for bringing those digital and HDTV out-of-band signals down to where your...

EDN columnists crack the books for EEs. (leading edge).(Book Review)
August 7, 2003... Two OF EDN's well-known regular contributors have recently published books showcasing their expertise. Signal-integrity columnist Howard Johnson, along with co-author Martin Graham, reiterates and vastly expands his usual single-page coverage...

Dilbert. (leading edge).
August 7, 2003... WE NEED TO DO MORE WITH LESS. [ILLUSTRATION OMITTED] I PROPOSE THAT WE WORK SMARTER WHILE BROADENING OUR FOCUS. [ILLUSTRATION OMITTED] WALLY, THAT DOESN'T MEAN ANYTHING. WELL, EXCUSE MY LEADERSHIP. [ILLUSTRATION...

Leading edge.(Brief Article)
August 7, 2003... * Service providers have deployed some 4500 WiFi "hot spots"--areas as large as 300 ft in radius within which subscribers with laptop and handheld computers can get broadband-speed Net services--in the United States, mainly in the last two...

Temp sensor encourages cool running. (leading edge).
August 7, 2003... The TMP122 from the Burr Brown group of Texas Instruments provides a digital output proportional to temperature via an SPI-compatible interface. The six-pin SOT23 IC has an error band of 0.5 to 1.5[degrees]C over -25 to +85[degrees]C, and...

Industrial-machine-vision system offers copious I/O and software choices. (leading edge).
August 7, 2003... NATIONAL INSTRUMENTS recently added a major product to its machine-vision-hardware portfolio. The CVS-1454 compact vision system has the rugged look of a factory-automation product, physically resembling the company's Compact FieldPoint...

Signal-integrity product adds features. (leading edge).
August 7, 2003... AS THE EDA INDUSTRY adopts emerging high-speed, asynchronous, serial-bus standards, such as PCI Express, HyperTransport, RapidIO, InfiniBand, and XAUI (10-Gbps attachment-unit interface), signal integrity is becoming both more critical and more...

Key consumer-electronics manufacturers form Linux Forum. (leading edge).
August 7, 2003... In another boost for the Linux operating system, eight major electronics manufacturers have joined forces to create the CELF (Consumer Electronics Linux Forum). The objective of this new consortium is to define extensions to Linux to meet the...

Antenna meshes with compact needs. (leading edge).
August 7, 2003... THE OLD RULE was that if you wanted a better antenna, you had to put up more metal, but that approach is no longer acceptable or necessary in our portable-product world, as vendors develop new technologies based on monolithic and multilayer...

"Programming-free" data-acquisition application-development software links to Matlab and Excel. (leading edge).
August 7, 2003... DATA TRANSLATION'S MEASURE FOUNDRY 4.0 Windows-based data-acquisition application-development package integrates live-measurement capabilities with access to Matlab (www.mathworks.com) and Excel (www.microsoft. com) for postacquisition math...

Fully differential amplifiers and transmission lines. (analog angle).
August 7, 2003... FULLY DIFFERENTIAL AMPLIFIERS aim at amplifying high-frequency signals while rejecting the noise that always exists in mixed-signal systems. You wire these amps on pc boards and in cabling schemes such that any injected noise is common-mode...

Intentional overshoot. (signal integrity).
August 7, 2003... ERNIE SITS SLUMPED AT HIS BENCH, massaging his temples, staring at the scope. Ashes from a half-smoked cigar mix with damp, cold midnight air and the smell of stale coffee as they swirl across the clutter of the latest unfinished project before...

Celebrating their Wright stuff. (edn.comment).(Editorial)
August 7, 2003... THIS DECEMBER marks the 100th anniversary of the first controlled, powered, manned flight by the Wright brothers. As you might expect, you'll be seeing innumerable commemorations, documentaries, commentaries, and acknowledgments of their truly...

Material emits more than Planck predicts. (Sightings: the outlook for new technology).(Brief Article)
August 7, 2003... A MATERIAL FABRICATED by researchers at Sandia National Laboratories emits more energy than allowed by Max Planck's 100-year-old Law of Blackbody Cavity Radiation. When heated to 1250[degrees]C, the material's energy output exceeds Planck's...

Images hide on different wavelengths. (Sightings: the outlook for new technology).(Brief Article)
August 7, 2003... SCIENTISTS at Xerox have created a technique that allows them to print two color images atop one another but view only one image at a time by exposing the paper to different colors of light. The patent-pending technique depends on specialized...

A solution for 3-D nanoparticle assembly. (Sightings: the outlook for new technology).(Brief Article)
August 7, 2003... THEY'RE NOT BUILDING nanoscale robots just yet, but researchers continue improve their ability to manipulate particles that measure mere billionths of a meter across. Scientists from Columbia University, IBM, and the University of New Orleans...

Good book requires good microscope. (Sightings: the outlook for new technology).
August 7, 2003... AN MIT PROFESSOR and two colleagues have used microlithography to print the 180,568 words of the Bible's New Testament (King James Version) in 24-karat gold on a silicon tablet that measures 5 mm on a side. Each letter in the text is the size...

Laser-lit marvels: optical-storage technologies squeeze bits onto plastic. (how it works).
August 7, 2003... AT A GLANCE * Boutique, unique features represent CD vendors' best chance for future success. * Advocates of DVD + and DVD- continue to squabble, but format-flexible drives increasingly and fortunately make the argument obsolete. ...

Upward spiral: optical storage (r)evolves to higher capacities, enhanced capabilities. (Cover Story).(Cover Story)
August 7, 2003... The publication of this article marks an anniversary of sorts: 20 years (and a few months) ago, Sony publicly unveiled the CD in the United States on the heels of introductions in Europe and Japan the previous fall. Philips and Sony had begun...

Seven trends in fiberoptic communication: trends evident at recent conferences and trade shows reveal technological interdependencies that give rise to complex marketplace relationships. (design feature).
August 7, 2003... AFTER TWO SOLID YEARS of the deepest downturn in our industry's history, the thinned-out herd of participants at this year's conferences and trade shows--be they vendors, customers, academics, or members of the trade press--share a common...

Motoring to success: choosing the right motor can make all the difference for your system. (design feature).
August 7, 2003... FOR MANY MOTION ENGINEERS, motor selection plays a central part in the search for improved system performance. Knowing which motor to use in a given application improves the cost, performance, and simplicity of your machine-design process...

Creating quasistatic, parameterized FPGA designs: new configuration approaches can lead to easier system designs, benefiting a range of applications. Reducing the overall pin count, interface complexity, and resource usage also enables FPGAs to be a flexible digital-signal-processing alternative to DSP architectures. (design feature).
August 7, 2003... Many of today's designs use RAM-based FPGAs (field-programmable gate arrays), either as prototyping vehicles before moving designs to ASICs or as production platforms in low-volume applications. Even in high-volume consumer-electronics...

Make noise with a PIC: Peter Guettler, APS Software Engineering GmbH, Cologne, Germany. (design ideas).
August 7, 2003... BUILDING A STABLE noise generator for audio-frequency purposes requires only a few components. The circuit in Figure 1 relies on linear-feedback shift registers and some simple software. An eight-pin Microchip (www. microchip.com) PIC12C508...

Circuit provides linear resistance-to-time conversion. (design ideas).
August 7, 2003... RESISTANCE-BASED transducers, such as strain gauges and piezoresistive devices, find common use in the measurement of several physical parameters. For applications in which digital processors or microcontrollers serve for data acquisition and...

Boost regulator makes low profile SEPIC with both step-up and step-down capability--Design Note 317. (Design Notes: Advertisement).
August 7, 2003... Introduction Automotive, distributed power and battery-powered applications often operate at a voltage that is derived from a widely variable bus voltage. Frequently the operating voltage falls somewhere in the middle of the bus voltage...

PC-configurable RLC resonator yields single-output filter. (design ideas).
August 7, 2003... THIS DESIGN IDEA presents a versatile filter circuit for low-power-consumption instrumentation that you can program from your PC using the parallel port. The circuit uses analog switches and latches instead of digital potentiometers for the...

Sing IC provides gains of 10 and -10. (design ideas).
August 7, 2003... REAL-WORLD DATA-ACQUISITION systems require amplifying weak signals to match the full-scale input range of an A/D converter. Unfortunately, when you configure them as gain blocks, most common amplifiers have both gain errors and offset drift....

Amplifier targets wireless infrastructure applications. (Amps, Oscillators & Mixers).
August 7, 2003... The RF3305 amplifier is useful for CDMA and WCDMA designs requiring high linearity and low noise figure over a frequency range of 300 to 3000 MHz. Housed in a 3x3-mm QFN package, the 5V device furnishes a gain of 12.5 dB, output power of 23...

Differential amp uses internal resistors to set gain. (Amps, Oscillators & Mixers).
August 7, 2003... The LTC1992-2 fully differential input and output amplifier employs internal gain-setting resistors to provide a fixed gain of 2 with better than [+ or -] 0.3% gain accuracy over -40 to [+ or -] 85[degrees]C. Its adjustable output common-mode...

TCXOs produce stable reference signals. (Amps, Oscillators & Mixers).
August 7, 2003... Compatible with HCMOS and TTL logic, the ER family of temperature-compensated crystal oscillators maintains a frequency accuracy of [+ or -] 2.5 ppm over -30 to + 70[degrees]C. The TCXOs develop a clipped sine-wave output and permit mechanical...

RF crystal oscillator minimizes jitter and phase noise. (Amps, Oscillators & Mixers).
August 7, 2003... Covering a frequency range of 600 MHz to 1.25 GHz, crystal oscillators in the RFX300 series provide phase jitter of less than 0.5 psec, rms jitter of 3 psec, and cycle-to-cycle jitter of 30 psec. Output symmetry is 45 to 55% (50% of...

Integrated clock synthesizer conserves board space. (Amps, Oscillators & Mixers).
August 7, 2003... A clock synthesizer, designated the CDC7005, packs multiplying, dividing, and jitter-reduction features into a space-saving, thermally optimized 64-pin BGA package. The chip synchronizes a VCXO to a reference clock and integrates a low-noise...

10-Gbps transimpedance amps dissipate 100 mW. (Amps, Oscillators & Mixers).
August 7, 2003... Two integrated transimpedance/limiting amplifiers for 10-Gbps Ethernet equipment, SONET/SDH optical receiver modules, and broadband instrumentation minimize power dissipation to meet MSA (multisource-agreement) power budgets. The 1342TL and...

Laptop PC I/O card. (Computers & Peripherals).
August 7, 2003... * Supplies one IEEE 1394 port and two USB 2.0 ports on one plug-in card * Comes with video-editing and disk-burning software, plus USB drivers for Windows 98SE, ME, and 2000 * DuoConnect for Notebooks, $129.99 Adaptec Inc,...

Camera-phone display module. (Computers & Peripherals).
August 7, 2003... * Comprises two color displays and a VGA camera in one compact, slim assembly * Incorporates a single backlight system that illuminates the main and sub displays * Compact Clam Color Camera (C4) module, samples are available now in...

Graphics-accelerator card. (Computers & Peripherals).
August 7, 2003... * Includes software that speeds photo editing and panoramic stitching processes * Includes 64 Mbytes of on-board memory, as well as DVI and VGA connectors * Graphics Blaster Picture Perfect, $179.99 Creative Labs Inc,...

Eight-in-one media reader. (Computers & Peripherals).
August 7, 2003... * Read and writes to eight types of media card * Employs a USB 2.0 interface to achieve speeds of 480 Mbps * F5U248, $39.95 Belkin Components, 1-310-898-1100, www.belkin.com

Flat-panel computer monitors. (Computers & Peripherals).
August 7, 2003... * Three-in-one displays serve as computer monitors, standalone TVs, and video displays for direct hookup to a DVD player, VCR, or video source * 15-in. (1501MP) and 17-in. (1701MP) units deliver maximum resolution of 1024x768 and 1280x1024...

Multidisplay graphics boards. (Computers & Peripherals).
August 7, 2003... * Provide dual independent DVI outputs at maximum resolutions of 1600 1200 pixels and fully symmetric dual RGB outputs at 1920x1440 pixels maximum * Sport twin 400-MHz, 10-bit Ultra-Sharp RAMDACs and an AGP 8X interface * Millennium...

Universal LCD controller. (Computers & Peripherals).
August 7, 2003... * Adapts to most common fiat-panel LCD resolutions and sizes (6.4 to 30 in.) * Offers analog RGB, DVI, composite, and S-video interfaces * Prisma, $175 for an RGB version Apollo Display Technologies Inc, 1-800-523-4862,...

Pentagon wants a PAL.(Leading edge: what's hot in the design community)
August 21, 2003... "DARPA obviously takes a very broad view of its charter. Organizing e-mail? Allocating office space? These are to DARPA's mission what Tang is to the space program." --defense analyst Steven Aftergood, on the Pentagon's doling out $29...

Dyno kit illuminates motor mysteries.(Leading edge: what's hot in the design community)
August 21, 2003... FOR MANY ELECTRONICS ENGINEERS, motors fall into the "can't-live-with-them, can't-live-without-them" category. A compact dynamometer and motor setup, which engineers at the University of Minnesota's Electric Drive Laboratory developed and...

Temp sensor cools your act.(Leading edge: what's hot in the design community)
August 21, 2003... THOUGH YOU MAY often overlook it, internal temperature measurement is critical in many designs. One device for the function, the dual-channel ADT7461 from Analog Devices, checks your processor or PC temperature and employs a technique to cancel...

Presilicon prototyping software adds self-test for debugging.(Leading edge: what's hot in the design community)
August 21, 2003... Aptix Corp has released Version 5.0 of its software for its System Explorer and Software Integration Station reconfigurable-prototyping products. The new release supports TCL scripting, Gtech (Synopsys internal format) netlist flows, and a...

Logic analyzers offer fast capture, deep memory, compact size, and low price.(Leading edge: what's hot in the design community)
August 21, 2003... IF YOU ARE WILLING to sacrifice modularity, Tektronix can save you a lot of money and bench space on your next logic analyzer. From the front, the four units in the company's new TLA5000 series look much like the benchtop members of the...

Dilbert.
August 21, 2003... A HAPPY DILBERT PREPARES TO GO HOME AFTER A LONG DAY IN THE CUBICLE. [ILLUSTRATION OMITTED] TOO LATE! THE SIX O'CLOCK HORROR IS UPON HIM! [ILLUSTRATION OMITTED] IN YOUR WORKSPACE NO ONE CAN HEAR YOU SCREAM. [ILLUSTRATION...

Leading edge.(Brief Article)
August 21, 2003... * By late July 2003, the Recording Industry Association of America had issued 871 subpoenas to people or organizations illegally down-loading music, videos, or software from the Internet, according to the Associated Press. * Gartner...

Search engine ante goes to 250 million searches/SEC.(Leading edge: what's hot in the design community)
August 21, 2003... IDT has announced the 75K72100 network-search engine The 18-Mbit TCAM (ternary content addressable memory) is available in 512k x 36- or 256k x 72-bit configurations and can perform as many as 250 million searches/sec. Employing features such...

12-bit, 400M-sample/sec PCI ADC board offers 78-dB SFDR, memory expansion to 4 million points.(Leading edge: what's hot in the design community)
August 21, 2003... THE 12-BIT-RESOLUTION, $9490 Acqiris Model DP310 PCI digitizer board combines 300-MHz, 23-dB bandwidth, a sampling rate of 400M samples/sec (plus 5% over range to 420M samples/see), 78-dB SFDR (spurious-free dynamic range), optional memory...

Software tool makes short work of polyglot IP in SOC ICs.(Leading edge: what's hot in the design community)
August 21, 2003... EEs WHO DESIGN TESTABILITY FEATURES into SOC (system-on-chip) ICs and those who design verification and production-test programs for such devices have to regard Agilent's SmarTest PG (program generator) CTL (core-test language) Browser as a...

Structured-array family touts 2.6 million gates.(Leading edge: what's hot in the design community)
August 21, 2003... AMI Semiconductor has added a new member to its XPressArray structured-array product family, which has for some time been in volume production at 180 nm. The new XPA-HD offers 40% more density than previous devices. The device provides as many...

DSP core makes magic with complex arithmetic.(Leading edge: what's hot in the design community)
August 21, 2003... ATMEL'S Magic VLIW DSP core executes single-cycle complex arithmetic operations that support executing the differential equations and adaptive beam-forming algorithms for hands-free audio conferencing, spectrum analysis, and audio encoding and...

Stop testing from destroying low-voltage ICs on pc boards.(Leading edge: what's hot in the design community)
August 21, 2003... YOU MIGHT HAVE EXPECTED that voltages that don't faze older generations of ICs--say, those that operate from 5V supplies--can kill newer semiconductors--for example, devices that operate from 1.5V. If your production-test people are testing...

Autorouter adds command-language syntax checker.(Leading edge: what's hot in the design community)
August 21, 2003... A mistake in the script that command the operation of an EDA tool can sometimes introduce errors in a design. These errors are difficult to find because their cause is not readily apparent from the design data. DFM, a third-party supplier of...

Consolidate your noise-solutions toolbox.(baker's best)
August 21, 2003... FINDING THE SOLUTION to a noise problem on the digital side of the circuit versus the analog side does not always require a different set of tools. Many times, you can track down noise to one root cause: your layout. Specifically, your layout...

Has paper's time passed?(edn.comment)(Editorial)
August 21, 2003... PAPER'S ROLE as the preferred easel for literature stretches back thousands of years, Johann Gutenberg's invention of the printing press in 1436 gave common men and women their first access to literature, much as Henry Ford's mass-production...

Making the CAN bus a "can-do" bus: connect a PC to your proprietary instrument using the CAN bus.(how it works)
August 21, 2003... WHEN YOUR INSTRUMENT rests under five feet of snow, on the summit of Greenland's ice cap, at 70 degrees latitude and an altitude of 4000 meters, you'd rather not have to dig it up to get your data out. The Space Physics Research Laboratory at...

Pump it up: with a new PCI express specification in hand, designers are creating the interconnecting building blocks of tomorrow's high-performance embedded systems.
August 21, 2003... TO PARAPHRASE Mark Twain, rumors of the PCI bus's demise have been greatly exaggerated. For years, pundits have predicted the end of traditional shared-bus architectures, such as PCI, because of problems with bandwidth, scalability, and...

Platform-based design: blocks and buses lead the way: the design method is becoming popular, despite a lack of a clear definition of what constitutes a platform.(design feature)
August 21, 2003... ENGINEERS DEAL with complex systems by dividing them into subsystems, almost always using functions as the deciding criterion. When you look at a complex ASIC, for example, you see a number of functional blocks connected by buses. Depending on...

Complete monolithic 800mA linear Li-Ion battery charger fits in ThinSOT package.(Power management: high performance analog solutions from linear technology)
August 21, 2003... The LTC[R]4054 is a single-cell linear Li-Ion battery charger with onboard charge termination circuitry and power transistor housed in a 5-lead, 1mm high SOT-23 (ThinSOT[TM]) package. The LTC4054 can deliver up to 800mA of charge current in the...

PWM controller minimizes transformer size in isolated & non-isolated power supplies.(Power management: high performance analog solutions from linear technology)
August 21, 2003... The LT[R]1950 is a PWM controller with a sophisticated control mechanism to protect, simplify and reduce the size of isolated/non-isolated 15W to 500W power supplies with 24V and 48V input supply rails. The LT1950 features an adaptive maximum...

Dual outout supply powers FPGA from 3.3V and 5V inputs.(Power management: high performance analog solutions from linear technology)
August 21, 2003... FPGAs often require multiple power supplies: one for the core voltage (usually 1.8V, but sometimes as low as 1.2V) and at least one more for the I/O circuitry (often 2.5V). The available input supply is either 3.3V or 5V. One way to provide the...

Cascaded power converters find acceptance as performance demands increase: with performance requirements on the rise, the benefits of a cascaded topology may outweigh its complexity.(design feature)
August 21, 2003... MOST OF THE POPULAR power-conversion topologies--buck, boost, flyback, and forward--owe their status to a positive combination of performance and complexity. But as performance requirements for power conversion have increased over the years,...

Using VHDL-AMS to model complex heterogeneous systems, part 1: HDLs bridge the gap between math-based tools and physics-based tools to help you meet model-development requirements.(design feature)
August 21, 2003... MOTION-CONTROL-SYSTEM development poses many challenges for conventional simulation tools. These systems are extremely complex, and they also traverse technology (domain) boundaries as well as analog/digital boundaries. In addition, computers...

Video multiplexer uses high-speed op amps.(design ideas)
August 21, 2003... VIDEO multiplexers route video from several sources to a single channel. Low-end consumer products use CMOS analog switches and multiplexers, such as the 4066 and 4051. Unfortunately, these devices have a series on-resistance that ranges from...

Single resistor tunes lowpass filter.(design ideas)
August 21, 2003... Vladimir Tepin, State Radioengineering University, Taganrog, Russia ANY TUNABLE, second-order, active RC-filter section requires at least two thoroughly, I matched variable resistors. But the lowpass implementation in Figure 1 provides for...

Simple circuit provides precision ADC intertace.(design ideas)
August 21, 2003... REAL-WORLD MEASUREMENT requires the extraction of weak signals from noisy sources. High common-mode voltages are often present even in differential measurements. The usual approach to this problem is to use an op amp or an instrumentation...

Buck regulator operates without a dedicated clock.(design ideas)
August 21, 2003... MOST SWITCHING REGULATORS rely on a dedicated clock oscillator to determine the switching frequency of operation. A dedicated oscillator circuit within the power controller usually generates the clock signal. A class of hysteretic switching...

LED driver combines high speed, precision.(design ideas)
August 21, 2003... APPLICATIONS such as turbidity measurement and densitometry require cleanly pulsed light sources with stable amplitudes. The LED driver in Figure 1 illuminates retinal neurons in a biological experiment that has similar requirements. For a...

Filament transformer adjusts line voltage.(design ideas)(Brief Article)
August 21, 2003... THE PROBLEM: I couldn't use my Heathkit oscilloscope in a house I lived in during the 1960s because my lab was too far from the power-line input to the house, and the line drop through the house was substantial. Depending on the time of day,...

Efficient dual polarity output converter fits into tight spaces.(Design Notes)
August 21, 2003... Design Note 318 Introduction This Design Note describes a compact and efficient [+ or -]V output dual polarity converter that uses a single buck regulator. The topology shown features 3ram maximum circuit height, high efficiency and...

Digital domains: hands-on project: testing mobile, mass-storage, multimedia machines.(digital den)(Product/Service Evaluation)
August 21, 2003... TODAY'S DIGITAL consumer goes through life accumulating multimedia assets: batches of megapixel photos, bunches of MP3 files and bushels of downloaded video clips. He or she longs files, a convenient way to transport this precious trove, access...

Low-profile converters produce as much as 30W.(power source showcase)
August 21, 2003... Standing only 0.38 in. above the pc board, de/dc converters in the ALT series deliver as much as 25W from a single-output module and 30W from a dual-output device. Package dimensions are 1.6 x 2 in. Units produce 6A from the 3.3V output, 5A...

Quarter-brick convertor span 15 to 25A.(power source showcase)
August 21, 2003... ULQ series de/de converters produce single outputs of 1.2, 1.5, 1.8, 2, 2.5, and 3.3V at 15, 20, and 25A from a quarter-brick open-frame package. Nominal input voltage is 24 or 48V, All models are fully isolated to 2250V dc and feature maximum...

Rectifier packs 1500W in a 2U package.(power source showcase)
August 21, 2003... Joining the CAR series of cretifiers is the CAR1584, a 2U rack-mount front-end unit capable of producing 1500W of constant power. The CAR1584 offers a universal input range, power factor correction, adjustable out-put, and typical efficiency of...

Converters supply three low-voltage outputs.(power source showcase)
August 21, 2003... Operating over an input range 18 to 36V dc or 36 to 75V d de/de converters in the LT Triple series offer three regulated positive output voltage of 5V down to 1.5V. Each output is rated at 10A with 75W maximum power rating for all three outputs...

Rack-mount UPS systems tame damaging power fluctuations.(power source showcase)
August 21, 2003... OmniGuard rack-mount UPSs (uninterruptible power supplies) ensure that server, storage, network, and other enterprise devices receive stable and clean power. Leveraging automatic voltage regulation, front-access swappable batteries, and remote...

45w switchers mount on DIN rails.(power source showcase)
August 21, 2003... Designed for industrial-control and embedded-systems applications, the DR-45 series of 45W switching power supplies comprises four models with single out-puts of 5, 12, 15, and 24V dc Each unit comes in a fully enclosed plastic package for DIN...