To provide a power conversion transformer which is structurally easy to produce and has high conductor occupation factor inside a bobbin and small parasitic capacitance.
The power conversion transformer comprises: a cylindrical bobbin 32 around which primary winding 34 is wound; the primary winding 34 wound around the bobbin 32; secondary winding 36 arranged coaxially with the primary winding and spirally wounded on an outer peripheral side of the primary winding 34 wound around the bobbin 34, and insulated; cores 46 and 48 for magnetically coupling the primary winding 34 and the secondary winding 36; and a fixing part 38 for holding a lead-out part 36a of the secondary winding 36 and fixing the secondary winding 36 at a prescribed position.
ARIGA HIROKI
ENDO TOMOHIRO
Takashi Okamura
Horimai Kazuharu
Yoshihiro Hirai
Masahiko Denda