What is the advantage of a wire wound resistor?
Following are the advantages of wire wound resistor: It has higher order of stability and reliability. It has high power rating with a low tolerance value. Easy to make wire wound resistor of value 0.01 Ohm.
What are the advantages and disadvantages of a wire wound resistor?
Disadvantages of Wire Wound Resistor
- These resistors are used for only low frequencies because it works as an inductor at high frequencies.
- Therefore, non-inductive type resistors are used for high frequencies.
- It is expensive as compared with carbon size resistor.
- It is larger in size.
What are the characteristics of resistor?
Here’s a brief glossary of the most important terms used when describing resistors’ characteristics.
- Tolerance.
- Stability.
- Reliability.
- Voltage Coefficient.
- Noise.
- Temperature Rating.
- Thermal Resistance.
- Temperature Coefficient of Resistance.
What is a wire wound resistor?
A wirewound resistor is an electrical passive device that limits or restricts current flow in a circuit. 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.
Do wire wound resistors get hot?
If the resistor is dissipating 3W it will be too hot to touch but this is OK. Too hot to touch is not really all that hot and is nothing for a wirewound resistor. Don’t worry about it.
Are wire wound resistors fixed or variable?
Types of fixed resistors. The different types of fixed resistors include: Wire wound resistor. Carbon composition resistor.
What physical characteristics determine the power rating of a resistor?
Every resistor has a maximum power rating which is determined by its physical size as generally, the greater its surface area the more power it can dissipate safely into the ambient air or into a heatsink.
What is the construction of a wire wound resistor?
Construction of wire wound resistor The wire wound resistor is made by winding the metal wire around a metal core. In wire wound resistors, metal wire is used as the resistance element and metal core is used as the non-conductive material.
How is the resistance of a wirewound resistor determined?
Wirewound resistor construction varies widely. The manufacturing method and choice of materials is dependent on the way the resistor will be used in a circuit. All are made by winding a wire around a core. The resistance value is dependent on the resistivity of the wire, the cross section, and the length.
What kind of wire is used to make a resistor?
The resistor is constructed from resistance wire that is wound around a central core or former, that is usually made of ceramic. Basic construction concept of a wire wound resistor. Once wound, end caps are pressed onto the core and the resistance wire is welded to them to make proper contact.
How are resistors used in high power applications?
The applications of these resistors mainly include in high power applications. These kinds of resistors work with high accuracy by using a low temperature and are used in instrumentation due to its high accuracy. These resistors are applicable in a wide range of areas due to their properties like the following.