power circuit

基本解释

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。
Then, the main power circuit taking electric electronic component IGBT as key device is designed.
设计了以电力电子元件IGBT为核心器件的功率主电路。
The reliability in power circuit of inverter is assurance for VFD and other power transfer application.
逆变器主电路的可靠性是变频器等功率转化装置安全合理使用的保证。

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).
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