Different Types Of Resistors And Their Uses Pdf


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Types of Resistors. The two main characteristics of a resistor are its resistance, R, in ohms and its power rating, P, in Watts. The resistance, R, provides the required reduction in current or the desired drop in voltage.

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As the name implies, the resistance of the variable resistor is changeable. It is easy to vary or change the resistance of a variable resistor to a desired value. Variable resistors are mostly used when the user do not know what exact resistance value does he want. The process of limiting or restricting the electric current to a certain level is called resistance. The device, which is used to restrict the flow of electric current to certain level, is called resistor. The device, which not only restricts the flow of electric current but also control increase and decrease the flow of electric current is called variable resistor.

An ohm is an ohm, right? Not so fast — there are many different types of resistors. To insure that your circuit works and stays working, use the right type of resistor. In this article, you'll learn about the common types of resistors and their special characteristics. Every conductor exhibits some resistance to the flow of electrical charge except for superconductors. George Ohm discovered the exact relationship between voltage V , current I , and resistance R , formulating the law that bears his name and is learned by every electronics student:. As electrons flow through a material in response to an electric field, they collide with the atoms that make up the material.

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages , bias active elements, and terminate transmission lines , among other uses. High-power resistors that can dissipate many watts of electrical power as heat, may be used as part of motor controls, in power distribution systems, or as test loads for generators. Fixed resistors have resistances that only change slightly with temperature, time or operating voltage. Variable resistors can be used to adjust circuit elements such as a volume control or a lamp dimmer , or as sensing devices for heat, light, humidity, force, or chemical activity.

Outline of a Resistor

In fact the resistor is probably the most common type of electronic component used in electrical and electronic circuits. There is a large number of different types of resistor that can be bought and used. The properties of these different resistors vary, and it helps to obtain the right type of resistor for any given design to ensure that the best performance is obtained. Although many resistors will work in a variety of applications the type of resistor can be important in some cases. Accordingly it is necessary to know about the different resistor types, and in which applications each type of resistor can be used. Resistors are used in virtually all electronic circuits and many electrical ones. Resistors, as their name indicates resist the flow of electricity, and this function is key to the operation most circuits.

The property of a substance which opposes the flow of electric current or electricity through it is called Resistance OR Resistance is the ability of a circuit which opposes current. Mica, Glass, Rubber, Wood etc. Ohm is the measurement quantity of resistance, which produces one joule of energy in the form of heat in one second, when one ampere of current is flowing through it. The reciprocal of the resistance is called conductance. A resistor is a component or device designed to have a known value of resistance. Those components and devices which are specially designed to have a certain amount of resistance and used to oppose or limit the electric current flowing through it are called resistors. Resistors are available in different size, Shapes and materials.


Different Types of Resistors – Fixed, Variable, Linear & Non-Linear Resistors & Applications. Carbon Composition Resistors. Wire wound Resistors. Thin Film Resistors. Carbon Film Resistors. Metal Film Resistors. Thick Film Resistors. Metal Oxide Resistors. Cermet Oxide Resistors (Network Resistors).


Different Types of Resistors and its Applications

There is a broad range of resistors. In order to know the position of ROHM's resistors, we have attempted to classify not only based on the general materials used, but also in terms of the shape, integration level, and functions. This is the classification based on the functions of the resistors. The classification is made as fixed resistors and variable resistors, and, normally, the word "resistor" implies a fixed resistor. Variable Resistors: Variable resistors are composed of a fixed resistor element and a slider which taps onto the main resistor element.

Resistors: Types, Uses, Details

The main function of a resistor within an electrical or electronic circuit is to oppose or resist the flow of current, hence named as resistor. A fixed resistor is one for which the value of its resistance is specified or fixed and cannot be varied in general. Their resistive element is manufactured from a mixture of finely ground carbon dust or graphite similar to pencil lead and a non-conducting ceramic clay powder to bind it all together. The ratio of carbon dust to ceramic i. The mixture is then moulded into a cylindrical shape with metal wires or leads attached to each end to provide the electrical connection.

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types and sizes of resistors are used in electrical and electronic applications, all resistors fall There are numerous types of fixed resistors, ranging in size from Figure 3–8 shows various sizes of resistors, with the larger resistors being​.


Resistors: Types And Applications

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4 Comments

Paien B.
27.04.2021 at 09:46 - Reply

Resistors. Topics Covered in Chapter 2. Types of Resistors. Resistor Color Coding. Variable resistance, R, in ohms and its power rating, P, in Watts. applications with low resistance size but different resistance values.

Teflon F.
29.04.2021 at 06:06 - Reply

The resistor is a passive two terminal electrical components, that are used in most of the circuits.

Ralf B.
30.04.2021 at 05:57 - Reply

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Tielaydafoot
05.05.2021 at 14:35 - Reply

applications there values like power rating,R value, tolerance etc vary. Resistors of resistance value ranging from.1ohms to many mega ohms are manufatured.

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