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Bootstrap circuit for gate driver optocoupler

July 22, 2014 4:27 pm | by See Leng Kian, Principal Product Engineer of the Optoelectronic Business Unit of Fairchild. | Articles | Comments

IGBTs are commonly used in inverter systems, which are used for adjustable motor drives, solar inverters and UPS. Inverters can be single-phase or three-phase, which is basically an extension of the H-bridge. Figure 1 illustrated one of the six gate driver optocouplers from Fairchild Semiconductor driving the IGBT module for the implementation of the three-phase inverter system.

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Self-cooling solar cells boost power, last longer

July 22, 2014 4:24 pm | by EurekAlert! | News | Comments

Scientists may have overcome one of the major hurdles in developing high-efficiency, long-lasting solar cells—keeping them cool, even in the blistering heat of the noonday Sun. By adding a specially patterned layer of silica glass to the surface of ordinary solar cells ...

A new multi-bit 'spin' for MRAM storage

July 22, 2014 4:12 pm | by EurekAlert! | News | Comments

Interest in magnetic random access memory (MRAM) is escalating, thanks to demand for fast, low-cost, nonvolatile, low-consumption, secure memory devices. MRAM, which relies on manipulating the magnetization of materials for data storage rather than electronic charges....

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Fly-inspired sound detector

July 22, 2014 4:08 pm | by EurekAlert! | News | Comments

Even within a phylum so full of mean little creatures, the yellow-colored Ormia ochracea fly is distinguished among other arthropods for its cruelty -- at least to crickets. Native to the southeastern U.S. states and Central America, the fly is a most predatory sort of parasite....

Pressure regulators intended for air, nitrogen, natural gas, and propane monitoring

July 22, 2014 4:02 pm | Product Releases | Comments

Marsh Bellofram Corporation (Newell, WV) announced the global market introduction of its Type T289 industrial gas back pressure regulator. Type T289 offers dual functionality as both a back pressure regulator and high-flow relief valve with an adjustable set point....

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System on module helps engineers develop embedded systems faster

July 22, 2014 3:48 pm | National Instruments | Product Releases | Comments

NI (Austin, TX) announced the NI SOM. It combines the Xilinx Zynq All Programmable system on a chip (SoC) with supporting components such as memory on a small PCB and features a complete middleware solution and ready-to-go Linux-based real-time operating system (RTOS) already integrated....

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The evolution of airplanes

July 22, 2014 3:39 pm | by EurekAlert! | News | Comments

One of the traditional arguments against Darwinian evolution has been that no one can confirm the process exists because it occurs on a time scale immensely greater than a human lifetime. Adrian Bejan, the J. A. Jones Distinguished Professor of Mechanical Engineering at Duke University, has disagreed with that notion ever since 1996....

Thick film chip resistor sample kits deliver 5% tolerance

July 22, 2014 3:21 pm | Stackpole Electronics, Inc. | Product Releases | Comments

The RMCF Series thick film general purpose chip resistors from Stackpole (Raleigh, NC) are now available in 5% tolerance design kits. The 5% kits have been added to supplement the popular 1% design kits. Each kit contains two decades of all E24 standard values for 48 total values per kit....

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Quantum leap in lasers at Dartmouth brightens future for quantum computing

July 22, 2014 2:55 pm | by EurekAlert! | News | Comments

Dartmouth scientists and their colleagues have devised a breakthrough laser that uses a single artificial atom to generate and emit particles of light. The laser may play a crucial role in the development of quantum computers, which are predicted to eventually outperform today's most powerful supercomputers....

Technique simplifies the creation of high-tech crystals

July 22, 2014 2:42 pm | by EurekAlert! | News | Comments

Highly purified crystals that split light with uncanny precision are key parts of high-powered lenses, specialized optics and, potentially, computers that manipulate light instead of electricity. But producing these crystals by current techniques, such as etching them with a precise beam of electrons, is often extremely difficult and expensive....

'Comb on a chip' powers new NIST/Caltech atomic clock design

July 22, 2014 2:38 pm | by EurekAlert! | News | Comments

Researchers from the National Institute of Standards and Technology (NIST) and California Institute of Technology (Caltech) have demonstrated a new design for an atomic clock that is based on a chip-scale frequency comb, or a microcomb....

NASA's Chandra X-ray Observatory celebrates 15th anniversary

July 22, 2014 2:16 pm | by NASA | News | Comments

Fifteen years ago, NASA's Chandra X-ray Observatory was launched into space aboard the Space Shuttle Columbia. Since its deployment on July 23, 1999, Chandra has helped revolutionize our understanding of the universe through its unrivaled X-ray vision....

Lithium-ion battery protection controller intended for smartphones and tablets

July 22, 2014 1:26 pm | On Semiconductor | Product Releases | Comments

ON Semiconductor (Tokyo) has announced a new Lithium-ion battery protection controller for smartphones and tablets. The highly-integrated LC05111CMT utilizes analog circuit technology, MOSFET technology, and advanced packaging expertise to incorporate controller and driver functions in a single circuit....

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45W GaN on SiC transistors offer 17dB of gain

July 22, 2014 1:18 pm | Rfmw Ltd, Triquint Semiconductor | Product Releases | Comments

RFMW, Ltd. (San Jose, CA) announces design and sales support for two new 45W GaN on SiC transistors from TriQuint. The T1G4004532-FL (flanged) and T1G4004532-FS (earless) are wideband, DC to 3.5GHz devices offering 17dB of gain, nearly twice that of competing GaN devices....

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Flyback transformer designed for 30 watt POE Plus applications

July 22, 2014 1:10 pm | Coilcraft | Product Releases | Comments

The POE300F Series flyback transformers from Coilcraft (Cary, IL) are designed to meet IEEE 802.3at-2009 standards for PoE Plus applications up to 30 Watts. Common PoE applications include VoIP telephones, IP cameras with pan tilt and zoom (PTZ), wireless access points, network routers, and remote Ethernet switches....

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