The electricity that flows in two ways, AC or alternating current and DC or direct current, is actually a movement of electrons along the conductor. The difference of the two lies in the direction, wherein the former keeps the moving electrons in a switching manner, while the latter is in a steady single track. The AC system of the power supply is utilized for transmitting long distance power to various power companies. Therefore, high voltages are needed to fill the transformers of those companies. DC power supplies, on the other hand, provide current on a small-scale basis.
The direct way of supplying a current is typically found in the form of a battery or batteries, in which positive and negative terminals are moving in a single direction. DC power supplies are used in various mechanisms such as car audio equipment, DC-powered radios, mobile phones and a whole lot more. In the competitive market, there are all different kinds of DC power supplies in different wattages and voltages. The specifications of each DC power supply that you will find will vary depending on what the battery is used for.
DC power supply is already an indispensable and ubiquitous component in our everyday life. It provides power to almost all of the portable electronic gadgets that we use such as our laptops, cellular phones, handheld computers and MP3 players. Make sure that the DC power supply that you purchase meets the specification of the equipment you need it for. If you use the wrong power supply, you just may damage your equipment.
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