Types of resistors and their uses pdf

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types of resistors and their uses pdf

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An ohm is an ohm, right? Not so fast — there are many different types of resistors.

Metal film resistors use a 4 digit numbering sequence to identify the resistor value instead of the color band scheme used for carbon types:. Carbon types are useful to about 1 MHz. Wirewound resistors have the highest inductance, and hence the poorest frequency response.

Types of Resistors

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.

When we vary the resistance of a variable resistor to a higher resistance value, the electric current flowing through the variable resistor will decrease. In the similar way, when we vary the resistance of a variable resistor to a lower resistance value, the electric current flowing through the variable resistor will increase.

The variable resistor is a resistor that controls increase or decrease the flow of electric current when we vary or change its resistance.

In other words, when we vary the resistance of the variable resistor, the electric current flowing through it will increase or decrease. The American standard symbol and the international standard symbol of the variable resistor is shown in the below figure.

The potentiometer consists of three terminals among which two are fixed and one is changeable. The two fixed terminals of the potentiometer are connected to both ends of the resistive element called track and third terminal is connected to the slider or sliding wiper. The slider or wiper moving along the resistive track changes the resistance of the potentiometer. The resistance of the potentiometer is changed when the wiper is moved over the resistive path.

When we increase the resistance of the potentiometer, the electric current flowing through the potentiometer will decrease. In the similar way, when we decrease the resistance of the potentiometer, the electric current flowing through the potentiometer will increase. The construction of rheostat is almost similar to the potentiometer. Like the potentiometer, the rheostat also consists of three terminals. However, in rheostat we use only two terminals for performing the operation.

The resistance of the rheostat is depends on the length of the resistive element or track through which the electric current is flowing. If we use the terminals A and B in the rheostat as shown in below figure , the minimum resistance is achieved when we move the wiper close to the terminal A, because the length of the resistive path decreases.

As a result, only a small amount of electric current is blocked and large amount of electric current is allowed. In the similar way, the maximum resistance is achieved when we move the wiper close to terminal C, because the length of the resistive path increases.

As a result, a large amount of electric current is blocked and only a small amount of electric current is allowed. The word thermistor is derived from the combination of words: thermal and resistor. It is a type of resistor whose resistance changes when the surrounding temperature changes. Thermistors are of two types: negative temperature co-efficient NTC thermistors and positive temperature co-efficient PTC thermistors. The resistance of the NTC thermistors decreases when the temperature increases whereas the resistance of the PTC thermistors increases when the temperature increases.

The resistance of the magneto resistor changes when the magnetic field is applied to it. When the strength of the magnetic field applied to the magneto resistor is increased, the resistance of the magneto resistor also increased. In the similar way, when the strength of the magnetic field applied to the magneto resistor is decreased, the resistance of the magneto resistor also decreased. The word photoresistor is derived from the combination of words: photon and resistor.

When light energy is applied to the photoresistor, its resistance changes. The resistance of the photoresistor decreases when the intensity of applied light increases. Photoresistors are of two types based on the material used to construct them: intrinsic photoresistors and extrinsic photoresistors. Photoresistors are also known as light dependent resistors, semiconductor photoresistors, or photoconductors.

The name humistor is derived from the combination of words: humidity and resistor. Humistors are very sensitive to the humidity. The resistance of the humistor changes with the slight change in the humidity of the surrounding air. Humistors are also known as resistive humidity sensors or humidity sensitive resistors. The name itself suggests that, the force sensitive resistors are very sensitive to the applied force. When we apply force to the force sensitive resistor, its resistance changes rapidly.

Force sensitive resistors are also known as force sensors, pressure sensor, force-sensing resistors, or FSR.

Zero Ohm Resistor. Variable resistor overview As the name implies, the resistance of the variable resistor is changeable. Variable resistor definition The variable resistor is a resistor that controls increase or decrease the flow of electric current when we vary or change its resistance.

Variable resistor symbol The American standard symbol and the international standard symbol of the variable resistor is shown in the below figure. 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?

Types of variable resistors The different types of variable resistors include: Potentiometer Rheostat Thermistor Magneto resistor Photoresistor Humistor Force sensitive resistor Potentiometer The potentiometer consists of three terminals among which two are fixed and one is changeable. Thermistor The word thermistor is derived from the combination of words: thermal and resistor. Magneto resistor The resistance of the magneto resistor changes when the magnetic field is applied to it.

Photoresistor The word photoresistor is derived from the combination of words: photon and resistor. Humistor The name humistor is derived from the combination of words: humidity and resistor.

Force sensitive resistors The name itself suggests that, the force sensitive resistors are very sensitive to the applied force.

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

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.

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.


Resistors. Topics Covered in Chapter 2. Types of Resistors. Resistor Color size but different resistance values. Their end electrodes are soldered.


[UPDATED] Explain The Different Types of RESISTORS pdf

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.

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.

Wire Wound Power Resistor

Resistors can be seen in almost all electronic circuits. There are many types of resistors and they can be divided into two groups namely fixed resistor and adjustable resistor variable resistor. The main function of the resistor is to resist the flow of electric current and regulate the flow of electrons.

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.

 Квадрат Цезаря, - просияла Сьюзан.  - Читается сверху. Танкадо прислал нам письмо. ГЛАВА 122 - Шесть минут! - крикнул техник. Сьюзан отдала приказ: - Перепечатайте сверху. Нужно читать по вертикали, а не по горизонтали. Пальцы Соши стремительно забегали по клавишам.

What is a resistor?

Нуматака введет этот алгоритм в чипы VSLI со специальным покрытием и выбросит их на массовый рынок, где их будут покупать производители компьютеров, правительства, промышленные компания. А может быть, он даже запустит их на черный рынок… рынок международного терроризма. Нуматака улыбнулся. Похоже, он снискал благословение - шичигосан. Скоро Нуматек станет единственным обладателем единственного экземпляра Цифровой крепости. Другого нет и не .

Но Сьюзан тут же сообразила, что могла быть еще одна причина отключения Следопыта. Внутренние ошибки программы не являлись единственными причинами сбоя, потому что иногда в действие вступали внешние силы - скачки напряжения, попавшие на платы частички пыли, повреждение проводов. Поскольку за техникой Третьего узла следили самым тщательным образом, она даже не рассматривала такую возможность. Сьюзан встала и быстро подошла к громадному книжному шкафу с техническими руководствами, взяла с полки справочник с прошитым проволочной спиралью корешком и принялась его листать. Она нашла то, что искала, вернулась со справочником к своему терминалу, ввела несколько команд и подождала, пока компьютер проверит список команд, отданных за последние три часа.

Это беспокоило Фонтейна: к коммандеру сходится множество нитей в агентстве, а директору нужно оберегать свое ведомство. Фонтейну нужен был кто-то способный наблюдать за Стратмором, следить, чтобы он не потерял почву под ногами и оставался абсолютно надежным, но это было не так-то. Стратмор - человек гордый и властный, наблюдение за ним следует организовать так, чтобы никоим образом не подорвать его авторитета. Из уважения к Стратмору Фонтейн решил заняться этим лично. Он распорядился установить жучок в личном компьютере Стратмора - чтобы контролировать его электронную почту, его внутриведомственную переписку, а также мозговые штурмы, которые тот время от времени предпринимал. Если Стратмор окажется на грани срыва, директор заметит первые симптомы. Но вместо признаков срыва Фонтейн обнаружил подготовительную работу над беспрецедентной разведывательной операцией, которую только можно было себе представить.

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

Сьюзан осторожно приоткрыла дверь и посмотрела на глянцевую, почти зеркальную стену шифровалки. Узнать, следит ли за ней Хейл, было невозможно.

COMMENT 2

  • A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. Golfpartwatoo - 17.03.2021 at 23:38
  • A wirewound resistor is an electrical passive device that limits or restricts current flow in a circuit. Alicia P. - 25.03.2021 at 05:15

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