Annular iron core of annular inductance

The utility model relates to an annular iron core of an annular electrical inductance. The utility model is provided with an annular body which is directly shaped by pressing magnetism conducting powder, and a cutting groove is arranged on the annular body so that an air gap is generated. In this way, the utility model utilizes the design that the magnetism conducting powder is directly shaped, an outer cutting groove controls the generation and the size of the air gap, etc., non magnetism conducting material can be avoided from coating the appearance surface of the magnetism conducting powder, costs are reduced, the problem of nonuniform coating is avoided, and the rate of products meeting standards is enhanced; the size of the air gap can be changed through the width of the cutting groove so that the electrical inductance of different electrical inductance quantities can be generated, and therefore, the products with different electrical inductance quantities can be smartly manufactured according to market demand.