公开(公告)号：DE2647146A1

公开(公告)日：1977-04-28

申请号：DE2647146

申请日：1976-10-19

Applicant: IBM

Inventor： HERKO JOSEPH MICHAEL ,  JOYCE JAMES MAURICE

IPC: H02M3/156 ,  H02M3/337 ,  H02M3/338 ,  G05F1/56

Abstract: Opposite phase outputs of a pulse width modulator (12) are connected to a transformer (18) primary winding (N1, N2) with a centre tapping. Collectors of two transistors (22, 24) connected in phase, are connected to the input voltage source (V1). Two secondary windings (N3, N4; N5, N6) with opposite winding sense are connected by one end of the transistor (22, 24) bases, and by the other to the input of a filter (28). Emitters of transistors (22, 24) are connected to the tappings of secondary windings (N3-N6).