What is DC?

What Does DC Mean

Before entering fully into the establishment of the meaning of the term continuous current, we are going to discover the etymological origin of the two words that give it its name:

-Current derives from Latin, specifically from "curren, currentis" which can be translated as "the one who runs". It is the result of the sum of two clearly delimited components: the verb “currere”, which means “run”, and the suffix “-nte”, which is used to indicate “agent”.

-Continua also derives from Latin, in its case from “continuus”, which can be translated as “lasting without interruption”. It was formed from the sum of three elements: the prefix “with”, which is synonymous with “together”; the verb “tenere”, which means “to retain”, and the suffix “-uo”.

It is called direct current to the electric current that, while it flows, retains the same sense. In this way it differs from alternating current , which periodically changes its meaning.

It should be noted that electric current is the flow of charges through a conductor (a material that, due to its characteristics, facilitates the passage of electricity ). Electric charge, for its part, is a physical property possessed by particles such as electrons and protons, manifested by the forces of attraction and rejection existing between them.
When the flow of electric current through a conductor does not change direction, it is a direct current. This means that, regardless of the time that elapses, the direction of current flow does not change: electric charges always flow in the same direction.
It is important to bear in mind that direct current (abbreviated as CC for its acronym, or as DC for the English expression direct current ) is not necessarily constant in terms of intensity . An electric battery discharges and loses intensity, even when it has direct current because it maintains the same polarity.
With direct current, in short, the subatomic particles always move in the same direction, from the positive pole to the negative pole. If you want to transform alternating current into direct current, you can use the element known as a rectifier , which can be full wave or half wave.
In general, equipment that uses direct current does not have protection against a change in polarity. That is why it is essential to respect the positive pole and the negative pole when using batteries or batteries, for example.
Other data of interest about direct current are the following:

-It can also be called galvanic current.

-The first commercial electrical network, developed by Thomas Edison in the late nineteenth century, was known to use what is direct current.

-The transformation of direct current into alternating current is really complex but not vice versa.

-As a general rule, direct current is used in applications where low voltage is needed. This can happen, for example, in systems where the energy is produced by photovoltaic cells and even batteries.

-Nowadays, contrary to centuries, in transport networks what is most used is alternating current due to the advantages it brings.

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