What is a wirewound resistor used for?

What is a wirewound resistor used for?

Wirewound resistors are typically used in high power and industrial applications such as circuit breakers and fuses.

How hot do wirewound resistors get?

The maximum working surface temperature is up to 400 °C. The TCR varies from 75 to 200 ppm/°C, and typical resistance values are in the range from 1 Ω to 10 kΩ. The majority of the power wirewound resistors have a ceramic core and a ceramic coating to protect the winding.

Are wirewound resistors inductive?

Wirewound resistors, by virtue of their construction, have self-inductance and are hence inductive. In a noninductive resistor, a second layer of resistance wire is wound in the opposite direction of the first wind.

Are wirewound resistors non inductive?

The WWN series wire wound resistors – non inductive have very low inductance (less than 1µH), high heat dissipation and low TCR. The resistors are coated using layers of Flame Proof Epoxy with axial lead wire. In WWN series, resistors up to 5W, the resistance value is color coded with 3 bands plus a tolerance band.

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.

What is wirewound potentiometer?

W-w Potentiometer uses a resistive element which looped copper nickel or nickel chrome resistive wire evenly around the cable core or card core. Combination of the resistive element and a noble metal alloy wiper maintains the precision and steady performance.

What does a power resistor do?

Power resistors are used when there is a need to safely convert large amounts of energy into heat using electrical energy as a medium. They are used as controllable power dissipation devices, protective devices, and devices that simulate real world loads.

Can you make a homemade resistor?

To create a wirewound resistor, one piece of wire would have to serve as the path for the electrical current to flow from one end of the resistor to the other. To create a resistor with a small resistance (or Ohm) value, use a thicker, shorter wire as the path between the two electrical leads.

What is wirewound inductor?

The RF inductor is the power inductor for high-frequency circuits with high quality factor (Q value) and is mainly used in communications, wireless, antenna, LAN, and other applications.

What is the difference between a non inductive and inductive resistor?

A non-inductive resistor can be used to replace an inductive resistor, but that might not be a realistic goal. Inductive resistors are typically cheaper to construct and are more commonly made with higher power ratings.

What is a wirewound inductor?

How do you know if a resistor is non inductive?

Resistors that have been specifically constructed to be non-inductive will be labeled as such under the Features filter on our website.

What happens if there is too much resistance in a circuit?

The higher the resistance, the lower the current flow. If abnormally high, one possible cause (among many) could be damaged conductors due to burning or corrosion. All conductors give off some degree of heat, so overheating is an issue often associated with resistance.

Why is my resistor smoking?

Resistors generate heat as current flows through them. If the applied voltage rises too high, they will heat up until they smoke or melt.