What Is Resistor And Its Types Pdf


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what is resistor and its types pdf

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One of the critical pieces in an electric circuit, the resistor is the most omnipresent electronic component.

Types of Resistors

Fixed resistors are the most frequently used resistors in the electronic circuits. These resistors have the fixed resistance value. Hence, it is not possible to vary the resistance of the fixed resistor. The process of restricting the flow of electric current to certain level is called resistance.

The device or component used to restrict the flow of electric current to certain level is called resistor. The device, which only restricts the flow of electric current to certain level but does not vary or control the flow of electric current is called fixed resistor.

Fixed resistors are the resistors whose resistance does not change with the change in voltage or temperature. Fixed resistors are available in various shapes and sizes. An ideal fixed resistor provides a constant resistance under all environments. However, the resistance of the practical resistors varies slightly with increase in temperature.

The cost of fixed resistors is high when compared to the cost of variable resistors , because each time to change the resistance we need to buy a new fixed resistor. In case of variable resistors, we use a single resistor for different resistance values.

The resistance of the fixed resistor is measured by using the ammeter. A fixed resistor consists of two terminals. This two terminals are used to connect with the other components in the electronic circuit. The wire wound resistor is a type of passive component, which is made by winding the metal wire around a metal core.

The metal wire acts as the resistive element to the electric current. Hence, the metal wire restricts the electric current to certain level. The metal core acts as the non-conductive material. Hence, it does not allow electric current through it. A manganin or nichrome is generally used as the metal wires because they provide high resistance to the electric current.

The carbon composition resistor is a type of passive component, which restricts the flow of electric current to certain level. The carbon composition resistors are made from a cylindrical resistive element with embedded metal end caps.

The cylindrical resistive element of the carbon composition resistor is made from the mixture of carbon powder and ceramic. The carbon powder acts as the good conductor of electric current. However, now a days these resistors are rarely used because of its high cost and low stability. Carbon film resistors are the most widely used resistors in the electronic circuits. The carbon film resistors are made by placing the carbon film on a ceramic substrate.

The carbon film acts as the resistive element to the electric current and the ceramic substrate acts as the insulating material to the electric current. The metallic end caps are fitted at both ends of the resistive element.

The leads made of copper are joined at two ends of these end caps. The carbon film resistors produce less noise than carbon composition resistor. The metal film resistor is a type of passive component in which metal film is used to restrict the flow of electric current to certain level. The construction of metal film resistor is almost similar to the carbon film resistor. The only difference is the material used for constructing the film.

In carbon film resistors, the film is constructed by using carbon whereas in metal film resistors the film is constructed by using nickel chromium or tin and antimony. The rate at which the resistance of the material changes with increase in temperature is called TCR.

The metal oxide film resistor is a type of passive component in which metal oxide film is used as the resistive element to restrict the flow of electric current to certain level. The construction of metal oxide film resistor is almost similar to the metal film resistor. In metal film resistor, the film is constructed by using the metals such as nickel chromium whereas in metal oxide film resistors, the film is constructed by using the metal oxide such as tin oxide.

The cost of metal oxide film resistor is low compared to the carbon composition resistor. These resistors operate at high temperatures. The metal glaze resistor is a type of passive component in which glass powder and metal particles mixture is used to restrict the flow of electric current to certain level. Foil resistors are the most accurate and stable components used to restrict the flow of electric current to certain level.

Foil resistors produce low noise compared to the other types of resistors. These resistors are also called high precision resistors. Zero Ohm Resistor. Resistors Resistors Types of resistors based on resistance Fixed resistor Variable resistor Wire wound resistor Carbon composition resistor Carbon film resistor Metal film resistor Metal oxide film resistor Metal glaze resistor Foil resistor What is potentiometer?

Resistance definition The process of restricting the flow of electric current to certain level is called resistance. Fixed resistor definition Fixed resistors are the resistors whose resistance does not change with the change in voltage or temperature. Symbol of fixed resistor The IEC International Electro-technical Commission standard and American standard fixed resistor symbol is shown in the below figure.

Types of fixed resistors The different types of fixed resistors include: Wire wound resistor Carbon composition resistor Carbon film resistor Metal film resistor Metal oxide film resistor Metal glaze resistor Foil resistor Wire wound resistor The wire wound resistor is a type of passive component, which is made by winding the metal wire around a metal core.

Carbon composition resistor The carbon composition resistor is a type of passive component, which restricts the flow of electric current to certain level. Carbon film resistor Carbon film resistors are the most widely used resistors in the electronic circuits. Metal film resistor The metal film resistor is a type of passive component in which metal film is used to restrict the flow of electric current to certain level.

Metal oxide film resistor The metal oxide film resistor is a type of passive component in which metal oxide film is used as the resistive element to restrict the flow of electric current to certain level.

Metal glaze resistor The metal glaze resistor is a type of passive component in which glass powder and metal particles mixture is used to restrict the flow of electric current to certain level.

Foil resistor Foil resistors are the most accurate and stable components used to restrict the flow of electric current to certain level.

[UPDATED] Explain The Different Types of RESISTORS pdf

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.

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.

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.


The property of a substance, which oppses the flow of an electric current through it is called a resistance. Its is measured in ohms and is represented by letter 'R'. Each resistor has two main characteristics. As resistors are used in wide applications there values like power rating,R value, tolerance etc vary.


Resistors Types

Resistors are considered to be the most used and the most important component of all the electronic circuits. Take a look at the working, types and also use of resistors in the field of electronics. We know that the basic idea of any electronic circuit is the flow of electricity. This also is further categorized into two — conductors and insulators. Conductors allow the flow of electrons, while insulators do not.

Fixed resistors are the most frequently used resistors in the electronic circuits. These resistors have the fixed resistance value. Hence, it is not possible to vary the resistance of the fixed resistor. The process of restricting the flow of electric current to certain level is called resistance.

Working of Resistors

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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. Then finally it is coated with an outer insulating material and colour coded markings to denote its resistive value.

Вгляделся в полоску на пальце и пристыжено покраснел.  - О Боже, - хмыкнул он, - значит, эта история подтверждается. Беккеру даже сделалось дурно. - Прошу прощения. Офицер покачал головой, словно не веря своим глазам. - Я должен был вам рассказать… но думал, что тот тип просто псих. - Какой тип? - Беккер хмуро взглянул на полицейского.

Basic distinction of resistor types

Все. Не упустите. Даже клочка бумаги. - Где теперь это кольцо? - спросил Беккер. Лейтенант глубоко затянулся.

 Я ничем не обязан мистеру Танкадо. Он зря мне доверился. Ключ стоит в сотни раз больше того, что он платит мне за его хранение. - Извините, но ваш ключ сам по себе ничего не стоит. Как только Танкадо узнает о том, что вы сделали, он опубликует свою копию, и рынок рухнет. - Вы получите оба экземпляра, - прозвучал голос.

Resistor & Types of Resistors | Fixed, Variable, Linear & Non-Linear

Хоть бы замолчала эта омерзительная сирена. Почему Стратмор отмел такую возможность. Хейл извивался на полу, стараясь увидеть, чем занята Сьюзан.

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Беккер почувствовал тошноту. Это какая-то глупая шутка. Он не находил слов.

 - Я два года проверяю отчеты шифровалки. У них всегда все было в полном порядке. - Все когда-то бывает в первый раз, - бесстрастно ответил Бринкерхофф. Она встретила эти слова с явным неодобрением.

 Все когда-то бывает в первый раз, - бесстрастно ответил Бринкерхофф. Она встретила эти слова с явным неодобрением. - Я все проверяю дважды.

4 Comments

Adimar C.
24.03.2021 at 13:45 - Reply

Resistors can be seen in almost all electronic circuits.

Billie B.
25.03.2021 at 08:22 - Reply

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Nabor M.
31.03.2021 at 07:01 - Reply

A wirewound resistor is an electrical passive device that limits or restricts current flow in a circuit.

Kate D.
31.03.2021 at 23:32 - Reply

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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