Some Differences Between An AC Adapter and A DC Adapter

May 19,2022

AC adapter, also known as AC power adapter. Since the mains voltage is generally 220V AC, and many electrical equipment needs to use 5V, 12V or 24V DC, an AC adapter is required to convert the 220V AC voltage to the DC mode for normal operation of electrical equipment.


Generally speaking, the input voltage of AC adapters commonly used in the world is in the range of 100-240V. According to the standards of different countries and regions, there are AC adapters with various specifications such as national standard, Japanese regulation, American regulation, British regulation, and Australian regulation.


The difference between an AC adapter and a DC adapter


Corresponding to the AC adapter is the DC adapter, which is also a type of power adapter. DC is Direct Current, which means direct current. So what is the difference between the power adapter AC and DC?


The meanings are different: AC is the English abbreviation for alternating current power supply, and DC is the English abbreviation for direct current power supply.


The current directions are different: the alternating current flows out and back in two directions, and the magnitude is constantly changing (the change rule of the lighting electricity is sinusoidal). The frequency can be used to indicate the speed of the change in the direction of the alternating current, and the phase can be used to indicate the starting time of the alternating current transmission. Direct current has only one direction, and current can only flow from positive to negative.


Different uses: our common electric lamps, motors, etc. are all AC; DC is mainly used in various electronic instruments, electrolysis, electroplating, DC power drag and so on.


Different specifications: DC refers to the direct current power supply, the common ones are 3v, 5v, 6v, 9v, 12v, 24v, etc.; the AC output voltage is generally 120V, 220V, 240V, etc.