State the material used for making (1) Magnetic Core (2) Fuse element
1 Answer
(1) Magnetic Core
The material used for a magnetic core is a soft magnetic material, with the specific choice depending on the application (e.g., frequency of the magnetic field).
- For low-frequency applications (like transformers and motors): Soft Iron or Silicon Steel (an iron alloy). It is typically used in the form of thin, insulated sheets called laminations to reduce energy loss from eddy currents.
- For high-frequency applications (like in switch-mode power supplies): Ferrites, which are ceramic materials with high magnetic permeability and high electrical resistance.
Key Property: High magnetic permeability (easily magnetized and demagnetized).
(2) Fuse Element
The material used for a fuse element is typically an alloy with specific properties.
- The most common material is an alloy of Lead and Tin. Other materials like Zinc, Copper, or Silver are also used depending on the fuse's current rating and performance requirements.
Key Properties: Low melting point and low electrical resistance.