What is a winder resistor
The winding resistor is made of nickel-chromium or manganese copper wire, and the copper wire is made from the ceramic tube. The winding resistor is characterized by extremely high resistance. The noise is small in operation, stable and reliable, can withstand high temperature, still working properly at 170 ° C at ambient temperature. But it is large, the resistance is low, mostly below 100,000 USA. In addition, due to structural reasons, its distributed capacitance and inductance coefficient are relatively large, and cannot be used in high frequency circuits.
The wire-wound resistor is made of a resistive wire on the insulating skeleton. The resistor is generally made of alloys having a certain resistivity of nickel-chromium, manganese copper. The insulating skeleton is made of a metal such as a metal such as a ceramic, plastic, a metal such as a metal, and a flat shape. The resistive wire can be wound on the skeleton according to the need, or the multilayer can also be wound, or an induction winding method.
The wire winding resistor is one of a fixed resistance. Its circuit symbol is the same as normal resistance. The internal and outer structures of the wire resistance are shown in the figure. Its innermost layer is a glass fiber core column that has a resistor on the core. The two ends of the resistor and the solder foot lead are pressed internally, and the outer layer seals it with insulated package filler.