Many people are confused about this issue and often see plausible answers. The correct answer is as follows - The DC voltage is a voltage that maintains a constant direction and magnitude; the AC voltage is a voltage that varies periodically in direction and magnitude. There are two points to note here: First, the direct current is based on voltage rather than current. The current will change with the load condition. As long as the voltage remains constant, it is direct current, such as dry battery or regulated power supply for the radio, although its output current will follow The volume varies, but the voltage is constant and therefore still belongs to the DC voltage; Second, the change of the AC voltage changes periodically rather than randomly.
Android Wi-Fi Tablet,Tablet Computer,Pcs Tablets,Tablet Pc Android
C&Q Technology (Guangzhou) Co.,Ltd. , https://www.gzcqteq.com