What Is Resistor And Its Types Pdf


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what is resistor and its types pdf

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A wirewound resistor is an electrical passive device that limits or restricts current flow in a circuit. Wirewound resistors are constructed using a conductive wire.

Fixed resistors are the most frequently used resistors in the electronic circuits. These resistors have the fixed resistance value.

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.

Working of Resistors

A wirewound resistor is an electrical passive device that limits or restricts current flow in a circuit. Wirewound resistors are constructed using a conductive wire.

The conductive wire is then wound around a non-conductive core. The conductive wire can be made of varying alloys and thickness to control the resistance value. Wirewound resistors are typically used in high power and industrial applications such as circuit breakers and fuses. Ohmite's 20 Series axial terminal resistors are both durable and economical. They have all the electrical attributes of more expensive wire wound axial resistors, including all-welded construction.

Download PDF. It features all-welded construction and rugged, flame-resistant conformal lead-free vitreous enamel coating… Read More. These wirewound resistors… Read More. Vitreous Enamel Power Select Type fixed resistors for applications requiring wattage ratings from 12 to watts. The Type resistors are equipped with lug terminals suitable for… Read More. Ohmite 40 Series resistors are the most economical conformal silicone-ceramic coated resistors offered.

These all-welded units are characterized by their low-temperature coefficients and resistance… Read More. Automated winding, in-line color banding, and testing allow for an economically priced, industrial grade wirewound power resistor. The Ohmite 50 series resistors feature an all welded construction… Read More. The 80 series is designed for applications requiring high precision… Read More. The 89 Series is a high-performance axial heatsinkable resistor. These molded-construction metal-housed resistors are available in higher power ratings than standard axial resistors and are better… Read More.

They are manufactured by a unique process that molds the vitreous enamel… Read More. High… Read More. Wound to… Read More. Enhanced power levels… Read More. The ARG Series is a high-performance heatsinkable aluminum housed resistor. These aluminum housed resistors are suited to withstand industrial applications that may include vibration, shock,… Read More. Tubular Wirewound Ohmite now offers the Audio Gold Resistor Family, specifically designed for high-end loudspeaker and amplifier applications.

These resistors utilize high-quality resistance… Read More. Ohmite Axiohm series is best known for its inorganic flameproof coating and ability to be produced in tight tolerances. The Axiohm series was designed to meet or exceed the characteristics of… Read More. Vitreous Enamel Power Select Euro series fixed resistors for applications requiring wattage ratings from 72 to watts. Suitable for rugged applications, Euro-Power resistors are spot welded… Read More.

Resistor Load Banks High Current Oval Edgewound The choice when conditions demand top-notch performance, these resistor load banks are commonly used for dynamic braking on Transit applications… Read More. The HPW wirewound series of resistors are produced for high precision applications. The HPW series can be produced below 0. The HSP series from Ohmite is an axial terminated precision wirewound resistor.

The HSP series is extremely stable with a temperature coefficient to 3ppm. This stability is obtained using a hermetically… Read More. Metalohm Series The Metalohm Series by Ohmite is a cold rolled, steel-encased wirewound resistor that is flameproof and nonhygroscopic.

Its heat sink capacity provides this product series with… Read More. The PC series is designed for direct insertion into printed circuit boards; fit standard 0.

The PC radial design and provided… Read More. The molded surface mount series is extremely versatile. Each construction is used to optimize… Read More. Ohmite's high power rheostats have been in use since The same robust design with wirewound construction is used today and continues to find new applications.

The use of resistance wire… Read More. Ohmite has used its thermal management expertise to produce a unique resistor design. The resistor body incorporates fins identical to a heatsink. These fins, as with a heatsink, increase the… Read More.

Sizes up to 15 watts and resistance values up to K ohms are available. Two constructions are used to obtain a wide… Read More. They are recommended… Read More. High Current Oval Edgewound Resistors The choice when conditions demand top-notch performance, these resistors are commonly used for dynamic braking on Transit applications.

Choose from five… Read More. Heliohm Wirewound The WLRH is a tough, versatile resistor appropriate for the following applications: motor starting and speed control, neutral grounding, lighting ballasts, and A.

The inductance of the WN is Read More. Go to Navigation Go to Content. Quick View. These molded-construction metal-housed resistors are available in higher power ratings than standard axial resistors and are better… Read More View In Catalog Download PDF.

These aluminum housed resistors are suited to withstand industrial applications that may include vibration, shock,… Read More Download PDF.

Axiohm Series Ohmite Axiohm series is best known for its inorganic flameproof coating and ability to be produced in tight tolerances. Euro-Power Wirewound Vitreous Enamel Power Select Euro series fixed resistors for applications requiring wattage ratings from 72 to watts. Metalohm Series Metalohm Series The Metalohm Series by Ohmite is a cold rolled, steel-encased wirewound resistor that is flameproof and nonhygroscopic.

PC Series The PC series is designed for direct insertion into printed circuit boards; fit standard 0. Rheostats Ohmite's high power rheostats have been in use since RW5 and RW7 Series Ohmite has used its thermal management expertise to produce a unique resistor design.

Resistors Types

One of the critical pieces in an electric circuit, the resistor is the most omnipresent electronic component. Available in wide varieties, these resistors can be used in various applications. Resistors are broadly classified as fixed and variable resistors, according to the type of resistance value they offer. Here, in this article we shall discuss about variable resistors, its definition, types and uses. A variable resistor is the type of resistor which changes the flow of current in a controlled manner by offering a wide range of resistances.


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.


Wire Wound Power Resistor

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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.

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.

Types of Resistors

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.

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Variable Resistor – Working, Construction, Types & Applications

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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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