What is the 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.
What is wire wound resistors used for?
Wire wound resistors, which are used in electronic equipments and instruments where high precision and more power dissipation are specified. Wire Wound Resistors are preferred over metal oxide resistors because of being better temperature co-efficient and of smaller size.
What is the characteristic of wire wound resistor?
Wirewound resistors have some very desirable characteristics. They have superior surge handling capability. They can offer higher precision and more tightly controlled temperature coefficients than any other technology. And, they are more stable.
What are wire wound resistor made of?
Wirewound resistors are commonly made by winding a metal wire, usually nichrome, around a ceramic, plastic, or fiberglass core. The ends of the wire are soldered or welded to two caps or rings, attached to the ends of the core.
What are the advantages and disadvantages of a wire wound resistor?
Advantages and disadvantages of wire wound resistor
- Low cost.
- High accuracy.
- High stability.
- Wide resistance range.
Where are wire wound resistors often used?
high power resistor applications
The wire wound resistor is often used in high power resistor applications or some other uses where its properties of low noise and power dissipation are needed . The wire wound resistor is used in a variety of applications and in particular as a power resistor where larger amounts of power need to be dissipated.
Is potentiometer a position sensor?
A linear potentiometer is a type of position sensor. They are used to measure displacement along a single axis, either up and down or left and right. Linear potentiometers are often rod actuated and connected to an internal slider or wiper carrier.
Which of the following is a disadvantage of wire wound resistor?
Disadvantages of wire-wound resistors: large size and low resistance, most of which are below 100KΩ. In addition, due to structural reasons, its distributed capacitance and inductance are relatively large and cannot be used in high-frequency circuits.
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 are wirewound power resistors used in a circuit?
What are Wirewound Power 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.
How is the resistance of a wire related to its resistivity?
The metal wire’s resistivity and the resistance of the resistor are directly proportional. If a metal wire has high resistance then it opposes huge electric current. Thus, the wire gives high resistance to the electric current. In contrast, a metal wire including less resistance can block less quantity of electric current.
What was the first type of resistor made?
Wire wound resistors were one of the first types of resistor to be manufactured in the earliest days of electrical science and then wireless. They were superseeded in many applications by carbon resistors and then metal oxide and metal film resistors.
