Wound resistors are a type of fixed resistor. Wound resistor elements are made by winding resistive wire around an insulating mandrel. The resistive wire is typically made of alloys such as nichrome or manganin, which have specific resistivity. The insulating mandrel is made into various shapes like tubes and flats from materials such as ceramics, plastics, and coated metals. The resistive wire can be wound in a single layer or multiple layers on the mandrel as needed, or use methods like inductive-free winding. Wound resistors are mainly used in precision instruments, telecommunication equipment, and electronic devices in AC and DC circuits for voltage division, voltage reduction, current division, and as load resistors.