Ferrite cores are a specific type of magnetic core that manufacturers make out of ferrite. These magnetic cores are where the windings for transformers and other electrical components are formed. Electronics manufacturers prefer to use ferrite cores because of their high magnetic permeability. Also, they feature low electrical conductivity. This low electrical conductivity prevents eddy currents, which refers to an electric current that’s induced by a varying magnetic field. Since ferrite cores don’t suffer losses at high frequencies, they’re a great option for radio frequency transformers. Ferrite cores often make their way into switched-mode power supplies and AM radio receivers.
Tokyo Denkikagaku Kogyo, better known as TDK Corporation, was founded in 1935. At the time, its goal was to provide the world with the first-ever commercial manufacturer of magnetic ferrite material. Since then, the company has evolved to release a number of products and services that center on ceramics and ferrite.