This paper introduces the principle of power factor detection device and presents a simple and effective detection method by comparing power factor checking methods.The power factor instrumentation schematics and related software with SCM as the core are designed combining with practice.%介绍了功率因数检测装置的原理,通过功率因数检测方法的比较,提出一种结构简单有效的检测方法。结合实际设计了以单片机为核心的功率因数检测仪表原理图和相关软件。
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