Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
2000-02-29
2000-12-05
Riley, Shawn
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 97, H02M 3335
Patent
active
06157550&
ABSTRACT:
A switching power supply circuit arranged such that stability of each output voltage is enhanced and the device is kept from being large-sized. Secondary winding N2 of transformer T1 is grounded at one end through diode D1: the other end of the secondary winding N2 is connected to first output terminal 2; and tap CT thereof is coupled to second output terminal 3 through diode D2; and capacitors C2 and C3 are connected between the first output terminal 2 and ground and between the second output terminal and ground respectively. In addition to being arranged as above, the present switching power supply circuit is further arranged such that first output voltage V.sub.01L is obtained from feedback voltage generated at the whole of the secondary winding N2, while second output voltage V.sub.02H is obtained from combination of induced voltage generated at winding section n21 defined through division by the tap CT of the secondary winding N2 and the first output voltage V.sub.01L.
REFERENCES:
patent: 4079294 (1978-03-01), Teuling
patent: 5285368 (1994-02-01), Ishikawa
Riley Shawn
Toko Inc.
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