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Content tagged with Optoelectronic
posted in March 2009
Simplifying BLDC commutation and feedback system
Design How-To  
3/31/2009   Post a comment
In a Brushless DC (BLDC) motor system, an electronic mechanism is required to commutate the system. Unlike a Brush DC motor system, the permanent magnet is located at the Rotor and the windings are located at the Stator. As a result of this setup arrangement, the windings are required to energize in sequence, to enable smooth commutation. For the electronic system to determine which windings to energize, Hall sensor feedback is used to get the current location of the windings with respect to the
Analyst: Growth in optos, sensors, discretes set to outpace ICs
News & Analysis  
3/25/2009   Post a comment
Sales of optoelectronics, MEMS-based accelerometers, CMOS image sensors, power transistors, and overall discrete devices set record high revenue levels last year, despite the disastrous final months of 2008, according to market research group IC Insights (Scottsdale, AZ.).
IQE boosts sales, profits
News & Analysis  
3/24/2009   Post a comment
Semiconductor wafer supplier IQE plc (Cardiff, Wales) says inventories are coming to an end after a slow Q1 and expects increasing demand in the second quarter of the year as it reported a seven-fold jump in full-year operating profits.
Driving LEDs European seminar
Product News  
3/20/2009   Post a comment
Rutronik has organised a European seminar tour to provide technical advice on LED and infra-red applications.
Photonic IC startup secures $19.5 million
News & Analysis  
3/17/2009   Post a comment
OneChip Photonics Inc. (Ottawa, Canada), a developer of optical circuits in indium phospide, has secured $19.5 million in venture capital financing from Canadian and U.S. investors including BDC Venture Capital, DCM, GrowthWorks Canadian Fund and Morgenthaler Ventures.
Sierra mux/demux targets 100G network apps
News & Analysis  
3/16/2009   Post a comment
Sierra Monolithics will start sampling in the second quarter of the year a range of 100G multiplexer with clock multiplier unit (CMU) and demultiplexer with clock and data recovery (CDR) devices, with volume production scheduled for the fourth quarter.
Commercial success for EU millimetre-wave research project
News & Analysis  
3/16/2009   Post a comment
Researchers from IPHOBAC, a European project to develop photonic components and systems for millimetre-wave applications, have revealed that the group is already commercialising some components.
EU funded PON project touts cost reduction breakthrough
News & Analysis  
3/12/2009   Post a comment
An interim review of the European Commission funded GigaWaM project, which is targeting the development and manufacture of application specific optical components for WDM-PON broadband access networks, indicates participants have demonstrated the manufacturing of AWG's with a 1.5 percent index.
Seiko Epson, Sony discuss LCD alliance
News & Analysis  
3/12/2009   Post a comment
Japanese conglomerates Sony Corp. and Seiko Epson Corp. are set to join forces in the manufacture and future development of small and medium sized LCDs.
Analyst: Top chip suppliers are underperforming
News & Analysis  
3/11/2009   Post a comment
Almost all of the semiconductor industry's top 25 companies not only saw sales declines last year—they also underperformed the overall chip industry for the year, according to researchers at iSuppli (El Segndo, Calif.)
Soft-start functionality in LED driver soothes eyes
Design How-To  
3/11/2009   Post a comment
LED brightness goes from zero to 100% almost instantly. That property is welcome in a camera flash, but rather annoying for general lighting.
Components of an ROV system - Part 2: Primary subsystems and electrical considerations
Design How-To  
3/10/2009   Post a comment
Part 2 of this excerpt from "The ROV Manual" looks at the primary subsystems of an ROV - including lighting, cameras, sensors and manipulators - and considers specific issues regarding the tether, power, data, and the connectors.
Light-emitting nanotube efficiency boosted
News & Analysis  
3/9/2009   Post a comment
Light-emitting nanotubes have been demonstrated, but their efficiency was mysteriously lower than theory would predict. Now researchers claim to have discovered the mechanism limiting efficiency along with a remedy to the problem.
How compact fluorescent lamps work--and how to dim them
Design How-To  
3/9/2009   11 comments
CFLs are a hot topic (only figuratively, not literally); how do they work, and how can you dim them?
Software simulates OLED physics
Product News  
3/6/2009   Post a comment
Startup Sim4tec (Dresden, Germany) is developing a software that helps researchers to better understand what happens inside the organic semiconductor and how designers can modify OLED properties.
Sharp : Chip LEDs offer up to 90 lumen per watt
Product News  
3/2/2009   Post a comment
In addition to the LED lighting module Zenigata, Sharp is expanding its LED Line-up with white and RGB high brightness chip LEDs.


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