National Semiconductor Corp.’s two new high-voltage system power management and protection integrated circuits (ICs) feature on-chip power management bus (PMBus) support. The 48V input voltage LM5066 and -48V input voltage LM5064 integrate system protection and management blocks that precisely measure, control and manage the electrical operating conditions in systems such as … [Read more...]
EMC and Electrical Protection Standard
This technical report addresses electromagnetic compatibility and protection of telecommunications equipment that is typically used by telecommunications service providers. Topics covered included ESD, EMI (both emissions and susceptibility), Lightning, Power Induction (transient and steady state), Power Contact, Corrosion, and DC Power.Purchase the standard. … [Read more...]
Protection Array Safeguards New Advanced Networking Transceivers
Semtech Corp.’s RClamp 0554S device is a 5V working voltage, ultra-low clamping voltage protection array built on Semtech’s process technology. As higher surge immunity standards are being required by many global telecommunication carriers, the RClamp 0554S device is poised to address a growing need for elevated surge protection. This device safeguards high-speed USB and … [Read more...]
Canadian Spectrum Auction Passes $2 Billion Point in Bidding
The second week of Industry Canada's auction of available wireless spectrum saw bidding exceed $2 billion. By round 16 on Monday, June 2, bidding totals had passed the $1 billion to $1.5 billion projected by a number of industry analysts. The auction is expected to continue for another few weeks. Forty percent of the available spectrum is available only to new entrants into the … [Read more...]
Congressional Committee Blocks FCC Approval of LightSquared
The House Appropriations Committee approved the fiscal year 2012 Financial Services and General Government Appropriations bill. One amendment to the bill prohibits funding for the Federal Communications Commission (FCC) to remove conditions on or permit certain commercial broadband operations until the FCC has resolved concerns of harmful interference by these operations on GPS … [Read more...]
Report Unveils 75 Incidences of Electronic Interference on Planes
A report by the International Air Transport Association, a trade group representing more 230 passenger and cargo airlines worldwide, documents 75 separate incidents of possible electronic interference that airline pilots and other crew members believed were linked to mobile phones and other electronic devices. The report covers the years 2003 to 2009 and is based on survey … [Read more...]
European Space Agency Shuts Down Illegal Transmitters
An international effort to shut down radio signals that have occasionally been blocking the instrument on ESA’s Soil Moisture and Ocean Salinity (SMOS) water satellite is improving the quality of the mission’s data.The SMOS satellite carries a passive radiometer that operates in the 1400–1427 MHz frequency range (L-band) of the electromagnetic spectrum. It shows ‘brightness … [Read more...]
Companies Announce First Implementation of Test System
Aeroflex Incorporated and fjord-e-design GmbH have implemented a TETRA II test system on a portable radio tester, the Aeroflex 3920 Digital Radio Test Set. The test solution allows transmitter and receiver testing of base stations and mobile stations supporting the TETRA Enhanced Data Service (TEDS). In the implementation, Aeroflex and fjord e-design demonstrated TEDS Frequency … [Read more...]
Panel: Cell Phones Possibly Carcinogenic to Humans
An international panel of experts says cell phones are possibly carcinogenic to humans after reviewing details from dozens of published studies on the matter.The assessment by the cancer panel now goes to WHO and national health agencies for possible guidance on cell phone use.The study raised serious concerns because it showed a hint of a possible link between very heavy phone … [Read more...]
Cell Phone Use May Affect Male Fertility
A team of international researchers has found that cell phone use may have negative effects on the fertility of men. Although the results are still inconclusive, the study has found that male cell phone users have lower quality sperm than those who do not have cell phones. The researchers' theory is that the electromagnetic waves that cell phones emit increase the number of … [Read more...]
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