Recommended Practice No. SNT-TC-1A: Personnel Qualification and Certification in Nondestructive Testing (2011) provides guidelines for employers to establish in-house certification programs for the qualification and certification of nondestructive testing personnel. Since 1966, employers have used this industry-valued document as the general framework for their NDT … [Read more...]
Thinner Solar Cells Absorb Broader Spectrum of Light
A recent discovery in the exotic optical effects on the nanoscale allows thinner and lighter solar cells to absorb a broader spectrum of light.Harry Atwater, a professor of Applied Physics and Materials at Caltech, and Koray Aydin, assistant professor of Electrical Engineering and Computer Science at Northwestern University, have discovered that by creating nanoscale wedge … [Read more...]
Shape-Shifting Metamaterial Reacts to Radiation
Australian physicists have engineered a new kind of artificial substance that can change its structure in response to light or other kinds of radiation.Unlike natural substances, the man-made material does not have fixed physical properties, explains Dr. Ilya Shadrivov, part of the team from the Australian National University who worked on the project.Under normal circumstances … [Read more...]
EU Spectrum Policy Does Not Answer Interference Questions
Latest negotiations that pave the way for a coherent set of rules on new spectrum use are poised to help the EU achieve the much talked about Digital Agenda. The Commission has made a clear call to Member States to put in place procedures to promote coexistence between new and existing services. But the latest text of the new Radio Spectrum Policy Programme (RSPP) falls short … [Read more...]
Why Are There So Many EMC Standards?
Steve Hayes, TRaC Global, Worcestershire, United Kingdom; Jack McFadden, Wyle Laboratories, Huntsville, Alabama, USA; Steve O’Steen, Advanced Compliance Solutions, Atlanta, Georgia, USA; Kenneth Wyatt, Wyatt Technical Services, Woodland Park, Colorado, USA; David Zimmerman, Spectrum EMC Consulting, Eagan, Minnesota. October 2011 sees the end of the transitional period from … [Read more...]
New $20.7 million Naval Electromagnetic Sensor Facility
The Naval Undersea Warfare Center (NUWC) Division Newport broke ground for a new $20.7 million Electromagnetic Sensor facility.With the addition of the new facility, NUWC will be well-equipped to keep submarines at the forefront of emerging electromagnetic sensor technologies well into the future. When completed, the 54,000 square foot facility will include six laboratories and … [Read more...]
Solar Panel Composed of Nano-Antennas Harnesses More Power from the Sun
A team of researchers at Tel Aviv University's Department of Physical Electronics and its new Renewable Energy Center are now developing a solar panel composed of nano-antennas instead of semiconductors. By adapting classic metallic antennas to absorb light waves at optical frequencies, a much higher conversion rate from light into useable energy could be achieved. Such … [Read more...]
Extended Series of Inrush Current Limiters
TDK-EPC has extended its range of EPCOS inrush current limiters (ICL). The P11 series (B57211P*) covers a resistance range from 4 to 25 Ω (R25). These types are designed for currents from 2.5 to 5 A in the temperature range between 0 °C and 25 °C. The P13 series (B57213P*) with a resistance range from 3 to 5 Ω is designed for higher powers, i.e. for currents of 6 or 7 A. The … [Read more...]
New Three-Phase Filters Suppress EMI Emissions
LCR Electronics’ new 096C series filters for high current three-phase applications feature high inductance common mode coils to increase filter attenuation performance.Designed to handle currents from 250 A to 800 A at 50°C, these filters are ideal for high current applications such as solar and wind power inverters, uninterruptible power supplies (UPS), battery chargers, CNC … [Read more...]
Three Phase Filter for Renewable Energy
Premo has developed a HCWMGF-series of filters for applications in renewable energy equipment, UPS, inverters and power inverters, with a maximum operating voltage up to 720Vac.HCWMGF series is available in three phase version L1, L2, L3 (without neutral) from 150A to 2500A, with power losses less than 0.02%.Learn more from Premo. … [Read more...]
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