Electronics & Computers

MEMS Resettable Circuit Breaker and Switch for DC-DC Voltage Converters

Resettable circuit breaker cantilevers use silicon dioxide (SiO2) for temper ature compensation. The compressive stress in the SiO2 causes the cantilever to bow upwards 400 μm after release. In the DC-DC voltage converter, the gap between the electrodes is 1.4 μm. After release, the cantilevers are stuck down. A short-loop experiment was conducted to better understand the cantilever behavior by omitting the contact metal and SiO2 layers from test cantilevers.

Posted in: Briefs, Electronics & Computers, Microelectricmechanical device, Switches, Test procedures
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Finite-Element Simulations of Field and Current Distributions in Multifilament Superconducting Films

The separation of high-temperature superconducting (HTS) tapes in filaments is a viable approach to reduce AC losses in HTS high-power applications, where AC currents and/or fields may be applied in addition to any DC field present. Methods such as mechanical, laser scribing, photolithography, or direct printing on buffered substrates using inkjet deposition have been used to create the filaments in the second-generation HTS coated conductors in order to reduce hysteretic losses. However, losses of the finely striated tapes can still be noticeably larger than predicted by analytical expressions, due to the addition of coupling currents or lack of field penetration, and such deviation tends to grow with increasing filament density. In order to reduce the magnetic coupling between filaments and the associated AC losses, an in-depth understanding of flux and current dynamics in the multifilamentary HTS, in realistic conditions, is required.

Posted in: Briefs, Electronics & Computers, Finite element analysis, Electromagnetic compatibility, Voltage regulators, Conductivity
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12V Front-End Distributed Power Supply

Emerson Network Power (Carlsbad, CA) has introduced the DS2900, a high-wattage 12V front-end distributed power supply. The Emerson DS2900 is rated for up to 2900W of adjustable output power at 240A. In addition to 12 VDC output, it offers 3.3 VDC auxiliary output for powering standby circuitry, and an optional alternative 5.5 VDC auxiliary output. The compact 2U × 3U form factor offers system-level power density of more than 24W per cubic inch. It offers typical operating efficiency of approximately 91 percent at 50 percent load. The power supply’s shorter form factor also allows mid-plane rack configurations, while same-side AC inputs and DC outputs allow hot-plug rack configuration.

Posted in: Products, Products, Embedded Technology, Board-Level Electronics, Electronics & Computers
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Replacement End-Of-Life Semiconductors

Rochester Electronics (Newburyport, MA) provides authorized reverse engineering services to recreate, manufacture and distribute pin-for-pin replacement parts with matched cycle for cycle timing for aftermarket semiconductor devices. Through its unique Rochester Semiconductor Replication Process™ (SRP™), customers can avoid system re-qualification steps as the Rochester-designed and manufactured parts deliver the same specifications and performance characteristics as the original products.

Posted in: Products, Products, Embedded Technology, Board-Level Electronics, Electronics & Computers
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Universal Injection Transformer

OMICRON Lab’s (Houston, TX) new universal injection transformer, B-WIT 100, was developed for the stability analysis of switched mode power supplies and control loops of any kind. Due to its special design, the B-WIT 100 combines a very wide frequency range (1Hz - 10 MHz) with a 600V CAT II compliant output.

Posted in: Products, Products, Embedded Technology, Board-Level Electronics, Electronics & Computers
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PCB Design-Tool

Sunstone Circuits (Mulino, OR), the printed circuit board (PCB) prototype solutions provider, is launching the newest version of their design software, PCB123® v4. This free-to-use, no license required design-tool has an intuitive CAD interface that lets you create new PCB designs quickly, offering freedom and flexibility in your schematic and layout editing.

Posted in: Products, Products, Embedded Technology, Board-Level Electronics, Electronics & Computers
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UPS With Long-Life Batteries

Falcon Electric, Inc. (Irwindale, CA) has introduced a long-life battery in its SSG Series™ Industrial-Grade Uninterruptible Power Systems (UPS) Plus product line. The units are available in models from 1.5 to 3kVA and in both 120 VAC and 230 VAC versions, and are capable of withstanding elevated temperatures of up to 55°C for prolonged periods of time. The long-life battery is particularly suited to environments with temperatures that exceed 40°C, such as a factory floor, a desert setting, or any computer rack. In such temperatures, the batteries are rated to last at least twice as long as a standard five-year/40°C rated battery. Specifically, the long-life battery has an expected life of seven years at 40°C and four years at 50°C, as compared to a standard battery, which is rated to last less than two years at 40°C and less than a year at 50°C.

Posted in: Products, Products, Embedded Technology, Board-Level Electronics, Electronics & Computers
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DC Power Converter Module

Lineage Power Corporation (Plano, TX), a Gores Group company, has expanded its Picot LynxTM DC-DC converter family with a new 2-amp model that is an energy-efficient, non-isolated, point-of-load (POL) converter. The 2A PicoTLynx boasts an efficiency of 93.1 percent at 5 Volt (V) out. This POL converter is capable of continuous full-load operation under extreme conditions up to 85°C and no air flow. The ruggedized version of this product is capable of full-load operation at 105°C and no air flow.

Posted in: Products, Products, Electronics & Computers
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Using Parallel Processing on GPUs to Accelerate Finite-Difference Time-Domain Algorithms for Electromagnetic and Seismic Applications

Many scientific, technical and engineering applications in finance, medical imaging, modeling, simulation, and image processing can benefit greatly from the floating point acceleration offered by modern general purpose graphics processing units (GPGPU). Today’s graphics processors have evolved into sophisticated, massively-parallel, highly-programmable compute engines ideally suited for algorithms with a high degree of data parallelism. Combined with modern parallel programming languages and application interfaces such as industry standard OpenCL™, GPGPU offers a new paradigm for high-performance computing (HPC).

Posted in: Articles, Articles, Embedded Technology, Board-Level Electronics, Electronics & Computers, Mathematical models, Architecture, Displays
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Using Multiprocessing in Industrial Automation Systems

Automated industrial control systems are an integral part of today’s manufacturing facilities. As these systems’ capabilities advance, the engineer shifts from someone who oversees processes to one who manages the data produced and functions performed by these systems to ensure product quality. Manufacturing systems need to be reliable, since downtime is an expensive alternative. Automation has reduced the number of people staffed at each facility so, if a system goes down, it’s probably not feasible for people to actually step in and move production along. If a system stops, so does production.

Posted in: Articles, Articles, Embedded Technology, Board-Level Electronics, Electronics & Computers, Computer software / hardware, Systems engineering, Automation, Manufacturing equipment and machinery, Productivity, Reliability
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