Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by sources such as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams.The term DC is used to refer to power systems that use only one
polarity of voltage or current, and to refer to the constant,
zero-frequency, or slowly varying local mean value of a voltage or
current.
Direct Current (red curve)
Applications:
DC system is a very efficient and loss-less and efficient way of utilizing electricity.DC current is mainly used in electronic circuits,dc drives and traction purpose.DC system is also used in transmission system as HVDC.
Thank you for this article on Direct Current. It being efficient and loss-less.
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