Farhad Rachidi, Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland Marcos Rubinstein University of Applied Sciences of Western Switzerland (HEIG-VD), Yverdon-Les-Bains, Switzerland The problem of lightning electromagnetic disturbances has been undergoing thorough reconsideration for the past few years due to the increasing complexity of electrical power and … [Read more...]
Human-Metal Electrostatic Discharge in IEC, ANSI and MIL Standards
Janusz Baran, Częstochowa University of Technology, Częstochowa, Poland, Jan Sroka, Warsaw University of Technology, IETiSIP, Warsaw, Poland Abstract Simulation of the human-metal electrostatic discharge alters slightly from one to another standard. As a result, setups with different frequency bandwidth are required for the calibration of the ESD simulators. The rule of … [Read more...]
Electromagnetic Interference in the Data Center: To Shield Or Not To Shield
Jordi Ferri, Shielding, Power & Cooling Division Manager, Advanced Shielding Technologies Europe S.L. (AST), Barcelona, Spain INTRODUCTION When designing a data center, many things need to be taken in account. One of them is availability and downtime depending on desired Tier configuration (see Table 1). For Tier III and Tier IV data centers, apart from redundancy of the … [Read more...]
MYTH: Is it Dangerous to use a Phone in a Thunderstorm?
During a thunderstorm, the National Weather Service advises against using a phone. MythBusters Jamie Hyneman and Adam Savage looked into this common safety advice, based on the possibility that lightning could strike whatever building you're inside. The MythBusters zapped a makeshift house with 300,000 volts of electricity to chart lightning's potential path from the ground … [Read more...]
New Power Connectors Feature Bayonet Locking Mechanism
Amphenol Industrial’s new Amphe-BTS power connector is designed to provide power from a wireless, mast-mounted base station to a remote radio head. This compact, energy-efficient connector meets the strict requirements set forth by the next generation of base stations. The Amphe-BTS provides 360° EMI shielding has grounding fingers and utilizes a bayonet locking mechanism that … [Read more...]
New Foil Surface-Mount Current Sensing Chip Resistor
Vishay Precision Group, Inc.’s new ultra-high-precision foil surface-mount current sensing chip resistor has low TCR of ±2 ppm/°C from -55°C to +125°C, +25°C ref., and tolerances to ±0.1%. For high-power applications, the VCS1625P offers a power rating of 1 W at +70°C and maximum 5 A current rating, and a four-terminal Kelvin configuration for increased accuracy.Offering the … [Read more...]
High-Voltage PMBus System Power Management and Protection ICs
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...]
Offering of Thermistors Sample Kits Expanded
TDK-EPC is presenting three new sample kits of ceramic PTC thermistors from EPCOS. The components of the sample kit “SMD PTC Thermistors for Limit Temperature Sensing/Superior Series” are designed for use as temperature sensors. The kit contains samples for sizes 0402, 0603 and 0805 across the temperature range between 75 and 145 °C in steps of 10 K. All thermistors are … [Read more...]
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