What is alternating current (AC)?

February 14, 2025common problems 2750

交流（AC）是一种极性周期性地反转并且幅度随时间不断变化的电流。与直流（DC）电相比，交流电的发电和输电成本更低，效率更高，因此企业和住宅通常使用交流电。在传输过程中，变压器可以通过提高或降低交流线路的电压，降低功率损耗。

交流电是一种家用电能——当消费者将电视等家用电器和其他器件的电源插头插入墙壁上的插座时，便能使用交流电。交流电可以转换为直流电，供几乎所有电子器件使用。

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What is alternating current (AC)?

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How do I measure the frequency?

What is the purpose of an oscilloscope?

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