Electronics & Computers

DC Power Converter for 200°C Containing SiC Transistors

A DC-to-DC power converter, nominally rated for a power of 180 W, an input potential of 28 V, an output potential of 270 V, and a maximum operating temperature of 200°C has been designed, built, and tested. This power converter serves as a prototype for further development of power converters required to be capable of operating in high-temperature environments in diverse settings, including automobile, aircraft, and spacecraft engines, and oil and gas wells.

Posted in: Briefs, Electronics & Computers, Capacitors, Transistors, Product development
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A Comparison of SiC-Based Devices for Use as Power Switches

A report details a survey of the state of technological development and commercial availability of SiC-based electronic devices that has been performed to evaluate the suitability of such devices as power switches in present and future applications in which high reliability and/or capability for high-temperature operation are or will be required. Examples of such applications include high-temperature motor drives, switch modules, and DC-to- DC power converters, and DC-to-AC power inverters. The survey consisted primarily of a comparative study of the relative advantages and disadvantages of SiCbased vertical-junction field-effect transistors (VJFETs) and SiC-based metal oxide/semiconductor field-effect transistors (MOSFETs). Other devices, including conventional Si-based MOSFETs and SiCbased bipolar junction transistors (BJTs) were considered, but only in passing, because it was assumed, at the beginning of the study, that the superiority of SiCbased VJFETs and SiC-based MOSFETs over other devices for power-switching applications had already been established.

Posted in: Briefs, Electronics & Computers, Switches, Transistors, Technical reference
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Advances in Organic-Based Electronic Devices

A program of research has addressed multiple topics in the field of electronic and optoelectronic devices based on polymers and other organic substances, with special attention to memory devices and solar photovoltaic cells. The accomplishments of this research are summarized as follows:

Posted in: Briefs, Electronics & Computers, Electronic equipment, Research and development, Polymers
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AlxInyGa1-x-yN Ultraviolet Light-Emitting Triodes

Light-emitting triodes (LETs) have been the focus of a program of research with a goal of increasing the quantum efficiencies of ultraviolet-lightemitting devices implemented in the AlxInyGa1-x-yN (0 ≤ x+y ≤ 1) material system. Heretofore, AlxInyGa1-x-yN-based light-emitting diodes (LEDs) have exhibited "efficiency droop" — decreasing quantum efficiency with increasing injection current. LETs can be used as means of studying and overcoming efficiency droop.

Posted in: Briefs, Electronics & Computers, Light emitting diodes (LEDs), Performance upgrades
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Single Board Computer

VersaLogic Corp. (Eugene, OR) offers the Sidewinder, a single board computer (SBC) designed to complement their existing EBX product line. The Sidewinder is a reliable fanless design featuring a robust array of onboard I/O functions including 8-channel 12- bit analog input, and 32- channel digital I/O. The RoHS-compliant Sidewinder includes VersaLogic’s proprietary SPX™ expansion interface that allows users to easily add a wide range of low-cost I/O options to the platform.

Posted in: Products, Products, Electronics & Computers
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Boundary Scan Test System

ASSET InterTech (Richardson, TX) has expanded its ScanWorks® system by adding signal integrity analysis applications that support Intel's next-generation embedded instrumentation technology, Intel® IBIST (Interconnect Built In Self Test). ASSET's ScanWorks environment with support for IBIST consists of software applications for validating and analyzing signal integrity on buses through margining and BERT techniques. ScanWorks interfaces to embedded instruments to validate boardlevel and system-level designs that feature high-speed buses such as PCI Express and Intel's QuickPath interconnect. The system features a suite of fault diagnostic tools.

Posted in: Products, Products, Electronics & Computers
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13 GHz Test System

Lecroy® Corporation (Chestnut Ridge, NY) has introduced a 13 GHz test system comprised of the SDA 13000 Serial Data Analyzer, the D13000PS Active Differential Probe, and a suite of debug and analysis tools. The new system provides powerful methods for next-generation serial data bus design, development, and debug.

Posted in: Products, Products, Electronics & Computers
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Avionics Network

ALT Software, DiSTI, Green Hills Software, and RTI (Santa Clara, CA) have combined to introduce a robust solution for mission-critical data distribution and display. The real-time integrated avionics network is for remotely piloted vehicles as well as other defense and aerospace applications.

Posted in: Products, Products, Electronics & Computers
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32 GB 2.5-inch SATA Solid State Drive

The new 32 GB SATA Solid State Disk (SSD) Drive from Ridata (Diamond Bar, CA) is almost twice as fast as a conventional hard disk drive. The data transfer rates are 60MB/s for maximum sequential read and 48MB/s for maximum sequential write. It requires a five-volt power supply.

Posted in: Products, Products, Electronics & Computers
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VME64x PowerPC Single Board Computer

Cornet Technology Inc. (Springfield, VA) has announced its latest VME64x PowerPC single board computer called the Celero CVME-7448ST. This board incorporates a newer hostbridge controller (Tundra Tsi109) and DDR2 memory technology. The CVME- 7448ST offers higher performance per watt and improved signal integrity. Memory latency caused by pipeline blockage is eliminated, improving performance by up to 9% and overall power consumption is reduced by up to 6W over boards using older technology.

Posted in: Products, Products, Electronics & Computers
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