Alternating current is the type of electrical current that is characterized because the magnitude and direction present a cyclical variation. However, the way in which this type of current oscillates is sinusoidal, that is, a curve that continuously rises and falls. Thanks to this form of oscillation, alternating current can transmit the energy more efficiently.
However, it should be noted that some special needs may require another format, such as square or triangular
The alternating current symbolized by the letters CA in the Portuguese language is also distinguished by the way in which electricity enters our homes, at work and by transmitting audio and video signals through the corresponding electrical cables that contain it.
It is impossible not to relate something from history to this theme, since the first tests that gave rise to this current date back to the end of the 19th century, when the engineer Nikola Tesla conceived and carried out the project of the first alternating current motor.
After him, other researchers and inventors would reach more novelties about the concept, for example, William Stanley managed to transfer this type of current to two isolated circuits, being the first and most direct antecedent of the transformer. However, the North American inventor George Westinghouse would be the first to commercialize this chain.
Another inevitable issue is the “war” established between alternating current versus direct current, defended by Thomas Edison the latter.
Finally, the concrete possibility of distributing energy on a large scale caused alternating current to be imposed.
Among the main benefits presented by the current we use compared to direct current is the simple proposed transformation, something that is not viable for direct current, since the latter requires the connection of dynamos in series to increase the voltage, while alternating current has nothing else to do. use the transformer to raise the voltage satisfactorily.