The power supply is the device that supplies power to the power supply equipment and can be divided into two major categories: AC power supply and DC power supply. The AC power supply is typically 50 Hz single-phase 220 V or three-phase 380 V (110 V/60 Hz in the United States and other countries). Using a single-phase conductive element can convert AC to DC. After removing the pulsating component, DC voltage (or current) can be obtained. In addition to the DC power supply by the AC rectified, filtered into a DC power supply, there are chemical power and physical power.
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