The Ferrite toroidal core for RFI suppression or broad band transformer. Material 77 is also usable as power transformer

The Iron Powder Toroidal Core is a versatile and reliable component suited for various applications. With a high inductance value and a wide range of turns and sizes available, this core offers exceptional performance in electronic circuits. High inductance value for efficient circuit operation<BR/>Multiple sizes and turns options for versatility in design<BR/>Durable iron powder material for long-lasting use<BR/>Precise construction for accurate circuit performance<BR/>Wide range of applications in electronics and telecommunications