This is the so-called "single-phase power circuit" works.

这也就是所谓的“单相电源回路”的工作原理。

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Power circuit, display device, electronic device and electric power transmission method.

电源电路，显示装置，电子装置与电力传送方法。

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Features and the working principle of the power circuit of ECU output interface are introduced.

介绍了ECU输出接口功率驱动电路的特点和工作原理。

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On a slightly smaller scale, there's the huge Siemens breaker I saw at the Bonneville Power Administration. (If you're thinking of buying one as an art object, ask your dealer for a Siemens 72.5 kV SF6 sulfur hexafluoride power circuit breaker).

NPR: Power Structures Shape Northwest Landscape

At Virginia Polytechnic Institute and State University, electrical engineering professor Dong Ha and his team are in the early stages of studying how to employ body heat to power a circuit.

WSJ: Harnessing Energy From the Body to Power Devices

The display, touch-screen module, as well as the applications processor and power management integrated circuit are all thought to be made by Samsung.

FORBES: Samsung's Beefed-Up Galaxy S4 Display Drives Bill Of Materials Up To $236