Phase control operations in light dimmers, motor speed controllers, and similar.

在调光器的相位控制操作，电机速度控制器，和类似的应用。

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When I plugged a Linksys unit into an outlet near three light dimmers and a hair dryer, file transfer speed was cut in half, but dimmers or dryer alone brought the speed down just 25%, to roughly Wi-Fi rates.

FORBES: Home Networks: A Shocking Idea