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EETE NOV 2013 A leading reference resource for electronics engineers, E Times Europe’s White Paper library includes over 600 white papers, application notes, technical articles, books and case studies that can be downloaded free of charge. The latest featured papers are available below. High-voltage DC distribution is key to increased system efficiency and renewable-energy The pressure throughout the energy supply chain to deliver electrical power more efficiently is intense and growing, particularly in high load applications such as datacenters. The latest white paper from Vicor highlights how a transition to 400 VDC for power transmission and conversion offers tangible and significant benefits for both sourcing options and system performance. And provides a significant response to initiatives for reducing emissions of greenhouse gases, lowering energy consumption and increasing use of renewable energy sources. Ultra-compact and innovative - new Schaffner IEC inlet filter series The FN9280 series consists of high performance single-stage EMC filters. Designed for the same housing cutout, the FN9290 has a dual-stage filter with an even better attenuation performance for applications with higher interference levels. The B versions of both series with minimal leakage currents of 0.5uA max. are suited for the use in medical electrical devices. A Case for Nonuniform Fault Tolerance in Emerging Memories As DRAM systems face scalability challenges, the architecture community has started investigating alternative technologies for main memory. These emerging memory technologies tend to suffer from the problem of limited write endurance. We propose Pay-As-You-Go (PAYG), an efficient hard-error resilient architecture that allocates error correction entries in proportion to the number of hard faults in the line. Compared to uniform error correction, PAYG requires one third the storage overhead and yet provides 13 percent more lifetime. Using Normalized Phase Noise as a Benchmark Metric Phase Noise is a measure of the spectral purity of a signal in an oscillator system. It quantifies the short-term random variation of the frequency of the signal, and is a product of thermal noise and low frequency flicker noise within the system. Most RF systems require an overall integrated phase noise specification to be met, as phase noise can corrupt both the up-converted and down-converted signal paths. In this whitepaper Peregrine discusses a way to benchmark PLL phase noise in order to easily compare performance between different PLL configurations or products. Limited signal integrity at high data rates: important evaluation options Cloud-computing services, hyperconnectivity: internet, video, online networks, mobile video applications, internet TV and online radio are leading to a continuous increase in the transmission capacity of networks. This leads to the need for further progress in depth of integration and an increase in data speed. With increasing frequency, the details become ever more important during digital circuit development. Checking and guaranteeing signal integrity carry increasing significance. Multi-tone Testing can save both Time and Money Given the huge amount of time required to conduct a radiated immunity test, it is no wonder operators “dream” of ways to improve efficiency to speed up the test. AR RF/Microwave Instrumentation has developed a product which uses a patented test process that adds additional test frequencies, or tones, for each test period, or dwell time. Electronic Engineering Times Europe November 2013 51

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