Thin Resonant Transformer with Leakage Inductance Adjusting Structure

A thin resonant transformer comprising:

• a wire bobbin, an inner winding, a magnetic plate, an outer winding, and two symmetric magnetic cores;
• wherein:
• the wire bobbin has a spool having a hollow interior;
• the wire bobbin has a top provided with a top plate and a bottom provided with a bottom plate;
• the top plate is provided with a first through hole;
• the bottom plate is provided with a second through hole aligning with the first through hole;
• the inner winding is wound around the spool;
• the magnetic plate is mounted in the wire bobbin;
• the magnetic plate has an upper end closely fit in the first through hole and a lower end closely fit in the second through hole;
• the outer winding is wound in the wire bobbin and encompasses the inner winding and the magnetic plate;
• the outer winding secures the magnetic plate in the wire bobbin;
• the magnetic plate is arranged between the inner winding and the outer winding;
• each of the two magnetic cores has a middle pole and two symmetric side poles;
• the middle poles of the two magnetic cores are inserted into the spool and contact each other;
• the two side poles of the two magnetic cores cover two sides of the spool and contact each other;
• the inner winding, the outer winding, and the two magnetic cores generate a first magnetic circuit;
• and
• the magnetic plate, the inner winding, and the outer winding generate a second magnetic circuit.