What is the difference between a DC power supply and an AC power supply?

common problems 3640

交流电适用于通过电网系统远距离输电和配电。

直流电是一种单向电荷流,比交流电更可靠,但不适合远距离输电。 大多数电子器件都使用直流电,因为它们的电压是恒定不变的,例如使用电池供电的器件。 有些器件也会使用整流器将交流电转换为直流电。 电源通常具有内置整流器和变压器,可以将电压提高或降低到合适的水平。

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