Patent ID: 6593839
Filing Date: 2003-07-15
Classification: H01F

Abstract:
A leakage flux-type power conversion transformer comprising:a first core having a leg; a second core having a leg; a primary winding, wound around the leg of the first core; and a secondary winding, wound around the leg of the second core; said primary winding and said secondary winding being electro-magnetically coupled together; at least one gap being provided between the leg of said first core and the leg of said second core; at least one of said primary winding and said secondary winding comprising a braided wire, braided from three or more cluster wires, each comprising a plurality of strands; and the size of the braid pitch (P) of the braided wire being such that the ratio (W/P) between the average one-turn winding length W of said strands and the braid pitch (P) is between 0.5 and 2.5.