Constant currents are considered constant if their intensity and direction do not change over time, being found in batteries and batteries. The pulsating continuous currents have their constant sense, although the flow of electrons inside the wire behaves like pulses, causing the intensity to suffer variations over time, being found in alternating current rectifier circuits.
The continuous current consists of the ordered flow of electrons that always present in the same direction, unlike the alternating current that the direction of the electrons varies in time. This type of current is produced by automotive or motorcycle batteries, small batteries, batteries, dynamos, solar cells and power supplies of different technologies, which rectify alternating current to generate direct current.
It is used to power electronic devices, as well as digital circuits of computer equipment. It is also possible to be used for transmission of electrical energy over large distances, by its advantages, in specific circumstances, compared to conventional AC transmission. This type of circuit has one negative pole and one positive pole. The continuous currents can be constant or pulsating.