The working principle of the AC power adapter is based on the principle of electromagnetic induction. After passing through the power adapter, the AC power is first adjusted by the transformer to regulate the voltage, then converted into pulsating DC power through the rectification circuit, and finally removed from the DC noise through the filtering circuit to make the voltage more stable. Finally, the voltage regulator circuit completes precise control and regulation of the output voltage, and activates the protection circuit when necessary.

AC power adapter, also known as AC power converter or AC/DC converter, is an important power conversion device. Its main function is to convert AC power into DC power to meet the power supply needs of various electronic devices. An AC power adapter is an electronic device that receives AC input and converts it into a stable DC output through an internal conversion circuit.