Transformer, loudspeaker device and loudspeaker system

摘要

A transformer (50) includes a bobbin (52) having a cavity (52a), a primary winding (54) wound around the bobbin (52), and a secondary winding (56) wound around the bobbin (52) and magnetically coupled with the primary winding (54). In the transformer (50), at least one (56) of the primary winding (54) and the secondary winding (56) is divided into at least two portions (56a, 56b) which include a portion (56a) wound at an inside region of the transformer (50) and a portion (56b) wound at an outside region of the transformer (50). Also, at least a portion of the other one (54) of the primary winding (54) and the secondary winding (56) is wound between said at least two portions (56a, 56b) obtained by dividing the one (56) of the primary winding (54) and the secondary winding (56), and at least a portion of the cavity (52a) of the bobbin (52) is used as a space to dispose another member therein. <IMAGE>