Subtitles prepared by human
Hello! In that video we're going to see the difference between alternating current and DC. Electricity is a type of energy transmitted by the movement of electrons through a material driver that allows the flow of electrons inside. The capacity conductive is represented through the electrical conductance. Inside of the conductive material the electrons are can move in one direction or alternate in two directions, depending on which can distinguish two types of current. First, direct current: the flow of electric current is given in a single sense. It is usually designated by the initials DC. Second, alternating current electric flow is given in two directions and it is usually designated with the acronym AC. The majority of current electricity grids they use alternating current, while batteries, batteries, dynamos, generate DC.
Let's look at the current first continuous or DC. In nature, electricity is relatively rare if compare with the everyday that is in our life; it is only generated by some animals and in some phenomena natural as lightning. In the search to generate a flow of electrons artificial, scientists were given account that a magnetic field could cause the flow of electrons through of a metallic cable or other material driver, but this was in a single sense, because the electrons are repelled by a field pole magnetic and attracted by the other. This is how the first batteries were born and electric current generators continuous, an invention mainly attributed to Tomás Edison, in the 19th century. Let's look at the alternating current or AC now. TO the end of the 19th century another scientist, Nikola Tesla worked in the development of the alternating current looking, above all,
be able to transport larger quantities of electric power and at greater distance, something that is very limited with the DC. Instead of applying magnetism uniformly and constantly, Tesla used a magnetic field rotary; when the position of the poles changes it also changes the flow direction of electrons, the current is produced alternate The change of direction in the flow of electrons is known as frequency and it is measured in hertz, unit that is equal to cycles per second, this means that in an alternating current of 60 hertz is produce 60 cycles per second. In a cycle the electrons change the sense and they go back to the original meaning, that is, there are two changes of direction per cycle. In an alternating current of 60 hertz, for Therefore, the flow of electrons changes the direction 120 times per second. Alternating current allows, among others many things, that you can connect a
device to a plug no matter where is the positive pole and the Negative plug However, in the direct current connections have that always place the positive pole and the negative in a specific position. Another big difference between the current alternate and direct current is the amount of energy that can be transport in each type. Electricity can not travel very far before start losing voltage; the voltage is the measurement of electrical tension. Every Battery is designed to produce direct current with a certain level of voltage. So from the moment of the production of electricity is already default the distance at which Can transport through the wiring. However, the alternating current is can produce in a generator and use a transformer to climb or lower the output voltage according to needs, allowing transportation at a much greater distance. Now let's look at the transformers.
The transformers are used in All electric circuit that needs adjust the voltage of the current electric that flows through it, be it a adjustment to the upside or a downward adjustment. For example, a power station produces electricity with a very high voltage high so you can travel to large distances and it is regulated downwards in Transformers near the destination final, as homes or businesses until the adequate attention for its consumption. The current can also be transform from alternating current to direct current and vice versa through of an adapter or voltage inverter, similar to those used in the battery chargers for a computer portable or a smartphone. The charger connects to the home network that uses alternating current and is transformed into direct current before to get to the device. If you liked this video do not forget leave us a like and leave also your
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