INDUCTOR AND POWER FACTOR CORRECTOR USING THE SAME

摘要

The present invention is related to an inductor, which includes winding set, a magnetic core, and an auxiliary magnetic core. The magnetic core includes a winding part and two opposite end-surfaces. The auxiliary magnetic core including a top surface is attached on one of the end surface and faces the other end surface so as to form an air gap therebetween. The permeability of the auxiliary magnetic core is smaller than that of the magnetic core. The winding is wound around the winding part, the air gap, and the auxiliary magnetic core. The auxiliary magnetic core achieves magnetic saturation before that of the magnetic core when current flowing through the winding set is increased, which reduces current variation per unit time of the inductor.

主权项

1. An inductor comprising:
a magnetic core comprising a winding part and two opposite end surfaces; an auxiliary magnetic core comprising a top surface, the auxiliary magnetic core attached on one of the end surfaces and spaced from the other end surface to form an air gap, the permeability of the auxiliary magnetic core being smaller than that of the magnetic core; and a winding set wound on the winding part, the air gap, and the auxiliary magnetic core, wherein the auxiliary magnetic core achieves magnetic saturation before that of the magnetic core when a current flowing through the winding set is increased to reduces current variation per unit time of the inductor.