Various Usages Of Fixed Resistors For Electrical Circuits

By Author: Salvatore Andrea
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Not all the objects used in an electrical circuit require same amount of current. A few objects need comparatively a lesser amount of current than the input value. In such cases, the ingredient that is used to reduce the flow of current is known as fixed resistors. First, a higher voltage pass through these resistors and then it flows further through the objects that have the capacity of minimal current intake. As the name itself indicates, a resisting material is used at the centre of this device followed by a current conducting material at the end of the same.

Depending on the type of material usedused, the resistors can be classified into three categories. For instance, based on resisting material there are three types of resistors found such as carbon and metal oxide film resistors, wire wound, and sand filled resistors. Power intake for these resistors also varies from each other such as 20 watts, 1/8 watts etc. Variation in plus or minus tolerance can also make a difference between the various kinds of resistor suppliers ...
... available in the market. For these resistors color coding system plays a significant role to make the resistor identification process successful. In some occasions, numerical coding is also used along with the same.

Four colored bands are used for these resistors to evaluate the value of the same. These bands are painted around the resistors. The first two numbers of these bands signify the first two essential digits of the resistance value. On the other hand, the third and fourth one work as multiplier and tolerance of the value respectively. Especially for the electrical circuits used in the devices like TVs, refrigerators, radios, machines, and regulators these highly essential resistors are used rapidly worldwide. The application of this material for these devices is truly indispensable.