Resistors are important aspects of electric circuits. They limit current flow through the value of resistance. In electronics jargon, high resistance means low current while low resistance means high current.
Resistors are those film-like components that are commonly used in electronic circuits. Different units provide a different level of accuracy, which is an important characteristic that you should determine before application. Once the need to restrict the actual flow of electricity in a circuit is present, resistors should be installed.
There are two types of resistors: fixed resistors and variable resistors. Fixed resistors carry a value of resistance that can not be changed or altered. Meanwhile, variable resistors are their exact opposite, containing either a changeable
value or an adjustable value that should only be manipulated by a technician.
Resistors are also categorized according to the materials from which they are made. The most common materials used for resistors are carbon and metal films.
When dealing with resistors you will most likely encounter a pattern of colors, which is used to indicate the amount of resistance resistors can provide. Memorizing this value, which is important in using resistors properly, usually takes time and a lot of practice.
Other Uses of Resistors
Aside from limiting current flow, resistors are also used for a handful of other operations. They can act as voltage dividers, heaters, fuses, signal attenuator, etc. Each of this function requires a specific resistor variety.
Important Tidbits about Resistors
There are some things you must take into consideration when looking at resistors. The resistance value is probably the utmost factor, but tolerance and power ratings are also equally important. Tolerance indicates the end points of the actual value of resistance while power rating tells you the safe level of power that a resistor can manage. Determining the accurate characteristics of resistors that you need for your project will save you time, effort, and possible headaches.
