Undoubtedly, the world wouldn’t be as liveable as it is now if electricity wasn’t invented. Important results of the innovation of electricity such as lighting and heating have all made the world as much livable as possible. Electrical energy flows in a circuit by the use of conductors. For certain results to be obtained at times, it is imperative that this flow of electrical energy through conductors is impaired somewhat. Circuital components that can be used to achieve this goal are called resistors. Thus what makes resistors so important and where can we use them?
First and foremost, custom resistors can be necessary for the control the outputs that are generated in certain electrical circuits. Generally, resistors can be classified as being fixed or of variable values. In variable valued resistors, the amount of resistance that is obtained from these components can be increased or decreased according to the needs of a circuit. By varying the amount of the resistance in a connection, the outputs of a circuit may be varied to give higher or lower outputs. The sound amplifier, for instance, makes use of this application.
The second use of custom resistors is to achieve heating. In normal cases, resistors work by generating a lot of heat. Resistance can thus be viewed as a way to transform electrical energy into heat. The heat produced is important for producing light- where bulbs make use of the heat to give light through there filaments. The heat from resistors can also be found in electric heaters and many other heating devices.
Custom resistors can also be employed to serve as voltage dividers in electrical circuits. For this to be achieved, a good number of resistors need to be wired together in series to form a daisy chain. The implication for this is that when the chain is formed from resistors of the same value, the voltage across them is also equal. However, when the values are different, the voltages will also differ. The aim of such a connection is to ensure that what was produced at the mains is subdivided into smaller amounts of voltages that can be consumed by appliances with lower power specifications.
Finally, LEDs and transistors won’t work if there were no resistors. These components are usually affected by either too low or too high amounts of electricity passing through them. Owing to this fact, they have to be wired with the right resistor with the right amount of resistance that will allow only limited amount of electric current to flow through them in order for them to work and to continue working.