Wire wound resistor

A potentiometer is a resistor that has three terminals. One of these is attached to a movable contact that varies the amount of resistance.

Wire wound resistors are suitable as potentiometer, because of the durable construction. Please view our large selection of wirewound resistors below.

In wire wound resistors, metal wire is used as the resistance element and metal core is used as the non-conductive material. A Nichrome or manganin is commonly used as the metal wires, because they provide high resistance to the electric current and operates at high temperature.

Tolerance:±1%-±5% 4. Type: Fixed RXwire wound resistor 5. Characteristics: Non-lead glazed on the surface. Resistance range:5ohm-20kohm 3. Wirewound resistors are constructed using conductive wire wound around a non-conductive core. They offer good energy rating and power dissipation for applications such as braking, and EV charging.

They come in different types, such as axial, tubular, or also enclosed cage where higher power dissipation is needed. For short pulses, it is necessary to determine the energy applied to the resistor.

For pulses less than the cross-over point, Vishay Dale engineering assumes all of the pulse energy is dissipated in the resistance element ( wire ). The are offered in various diameters ranging from till 55mm and lengths from till 590mm. The resistor has either a round or flat oval shape.

Coating can be cement or vitreous enameled. The wire wound resistor has a very wide range of application, especially when we need variable or adjustable resistor, or if we need a fixed resistor which has to dissipate larger power, this may be used. Item Number: 5W47R.

The temperature coefficient of resistance of manganin and constantan is almost zero. So, resistance variation with temperature of these resistors is negligible.

The wounded wire is covered with an insulating cover such. The Company recently expanded its range. Aluminum-housed heat sink small size high power wire wound resistors. Wire wound variable resistor can be used in two ways (i)Rheostats (ii)Potential divider.

To use the variable resistor as a current controlled device one of the two fixed terminals say A and B, and the sliding terminal C are inserted in a circuit, In this way the resistance of the wire between A and the sliding contact C is used. Wire - wound resistors are made of special alloys such as constantan, manganese copper and other special alloys made into thin wires and wound on the insulating tube. It is a resistor made by winding a wire on an insulated core.

It has high power rating with a low tolerance value. Easy to make wire wound resistor of value 0. Following are the disadvantages of wire.

The ends of the wire are soldered or welded to two caps or rings, attached to the ends of the core. The assembly is protected with a layer of paint, molded plastic, or an enamel coating baked at high temperature. Using nichrome wire makes this more practical since a meter.

These resistors are made by winding resistive wire on fibre glass cord or ceramic rods. Terminals are crimped or welded to end caps. Our vitreous enamelled wire-wound resistors consit of a round ceramic resistor element with a winding made of special resistor wire.

They are coated with a hard burnt vitreous enamel. We offer various standard models. Find a wide variety of trimmers, potentiometers and rheostats in a range of tolerances and operating temperatures. Our wire wound resistors exhibit high performance life and are being extensively used in electronic industries such as public address systems, UPS, Invertor, Panels etc.

Values from E0to 5k. Non inductive version available. Higher wattage resistors for special applications can be made.