These devices are designed for full-switching power factor correction in motor drive applications in the 3-6kW power range. The FPDB20PH60 (600V/20A), FPDB30PH60 (600V/30A), and FPDB50PH60 (600V/50A) all integrate two fast-recovery diodes, two freewheeling diodes, two IGBTs, a gate-driver IC, a shunt resistor and a thermistor into one package measuring 44 x 26.8 mm. They are half the size of other devices, and use 40 kHz-switching operation for less power loss, typically providing 99 percent power factor. They have under-voltage and over-current protection through integrated gate-driving IC, and offer an isolation voltage rating of 2,500 Vrms/min.
The first Tacoma Narrows Bridge was a Washington State suspension bridge that opened in 1940 and spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7, just four months after it opened.
Noting that we now live in an era of “confusion and ill-conceived stuff,” Ammunition design studio founder Robert Brunner, speaking at Gigaom Roadmap, said that by adding connectivity to everything and its mother, we aren't necessarily doing ourselves any favors, with many ‘things’ just fine in their unconnected state.
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