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Characteristics of wound resistors
1.Noncombustible winding coated resistor
2. High pressure impact resistance
3. Heat faster
4. Short time over load performance is good
5. Low noise
6. Resistance has not changed over the years
7. Error range: + / - 5%, + / - 2%, + / - 1%
8. Power range: 1/2w ~ 10000W
Advantages and disadvantages of winding resistor
The advantages of the winding resistor: resistance high precision, low noise, stable and reliable at work, temperature coefficient is small, can withstand the high temperatures, can still work normally under the environmental temperature of 170 ℃.
Winding resistor of disadvantages: large volume, low resistance, mostly under 100 k Ω. In addition, due to structural reasons, its distributed capacitance and inductance coefficient are relatively large, which cannot be used in high-frequency circuits.
Application of wire-wound resistors
Winding resistor is mainly used in low-frequency ac circuit to play the role of step-down, shunt, load, feedback, energy conversion, matching and so on, or in the power supply circuit plays the role of absorber and voltage divider, but also can be used as a shock loop and transformer attenuation adjustment and pulseTo form a shunt in a circuit. In addition, it can also be used in rectifier filter capacitor discharge and spark elimination. At the same time can be widely used in home appliances, medical equipment, automotive industry, railway, aviation, military equipment and instruments and other fields
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