Patent ID: 8125306
Filing Date: 2012-02-28
Classification: H01F

Abstract:
1. A transformer set, comprising: a first bobbin piece for winding a first primary winding coil, wherein said first bobbin piece has a first sheathing part; a second bobbin piece partially accommodated within said first sheathing part of said first bobbin piece, and comprising: a third bobbin piece for winding a second primary winding coil, wherein said third bobbin piece has a second sheathing part, and said third bobbin piece and said first bobbin piece are arranged in bilateral symmetry; a fourth bobbin piece partially accommodated within said second sheathing part of said third bobbin piece, wherein said fourth bobbin piece and said second bobbin piece are arranged in bilateral symmetry, and said fourth bobbin piece comprises: a magnetic core assembly partially embedded into said first bobbin piece, said second bobbin piece, said third bobbin piece and said fourth bobbin piece, wherein said first primary winding coil, said first secondary winding coil, said second primary winding coil and said second secondary winding coil interact with said magnetic core assembly to achieve voltage regulation.