Spring 2017

Five Questions Power Supply Professionals Should Ask Themselves About UPS Battery Maintenance and Replacement
Scott Baer, Marketing Manager-Batteries, Vertiv Services
In a recent battery maintenance quiz sponsored by Vertiv, formerly Emerson Network Power, 71 percent of respondents accurately answered that during a power interruption, it only takes one bad cell to cause your data centers uninterruptible power supply (UPS) to drop a critical load. Batteries are indeed the weakest link in the power chain and are historically a leading cause of costly downtime.

Adaptive Charging: Extending Battery Life and Reducing Costs in Mission Critical Telecommunications Standby Systems
Alex Rawitz, Business Development Manager, Servato Corp.
The accelerating growth of Internet of Things (IoT) devices and applications require continuous investment in telecommunications networks to provide the connectivity for millions of new devices. As more devices connect to the Internet, service outages become more impactful to the people and businesses that rely on IoT applications.

A New Power-Cycling Strategy for Testing the Reliability of Power Electronics Modules
Dr. John Parry, Mentor Graphics Corp.
The particular power cycling strategy you choose for high-power semiconductor devices, such as power transistors, diodes, MOSFETs and IGBTs, during reliability tests can have a significant effect on predicted lifetime results even if the tests have similar initial parameters. Also, how you set up the measurements can affect the results of the power cycling tests.

Grid-Tied vs. Behind-the-Meter Energy Storage: Putting Power Back in the Hands of End-Users
Catherine Von Burg, President and CEO, SimpliPhi Power
All over the country, winter storms are known to cause power outages that last for days or weeks at a time. As a result, upstate New York homeowner Bob Schluter designed a fully-automated, net-zero smart home with the ability to fully function off the grid for three weeks or more.

What You Must Do Before Shipping Batteries to India
Jody Leber, Global Battery Manager, SGS
The Bureau of Indian Standards (BIS) recently gave smartphone manufacturers who want to ship batteries to India a little more breathing room. But just a little. In June 2016, the BIS released new norms that for the first time requires handset vendors to test smartphone batteries separately.

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