Sine amplitude conversion for dc-dc converters
Electronics Weekly columnist Bob Marchetti explains the importance of SAC to help improve energy efficiency and output.
In a column for Electronics Weekly, columnist Bob Marchetti explains how sine amplitude conversion can be used to help improve efficiency for dc-dc converters. He writes how old dc-dc transformers would switch dc into an alternating square wave to produce the required output. The problem was that harmonic components had to be filtered in the process. Too much potential energy, as a result, ended up being lost.
A sinusoidal waveform, by contrast, is more efficient because it is continuously oscillating at a fixed frequency. Conversion efficiency increases to 98% to 99%, contributing to both high power density and reduced thermal management requirements. Radiated and conducted harmonic content is also minimized because of the sine amplitude.
Marchetti believes this adjustment is key for energy regulation, especially in a time when the desire to be more and more efficient while trying to cut down on waste.
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Annual Salary Survey
Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.
There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.
But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.
Read more: 2015 Salary Survey