Resonant power source apparatus

Details Resonant power source apparatus Resonant power source apparatus

2006-10-03

2006-10-03

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S097000

Reexamination Certificate

active

07116561

ABSTRACT:
A resonant power source apparatus has a series circuit of switching elements QL and QH connected to ends of a DC power source, a series circuit of a current-resonant capacitor, a resonant reactor, and a primary winding of a transformer connected to ends of the switching element QL or QH, a rectifying/smoothing circuit to rectify and smooth a voltage of a secondary winding, a pulse ratio controller to alternately turn on/off the switching elements QL and QH according to an output voltage from the rectifying/smoothing circuit, and a resonant period detector to detect a period during which energy is transmitted from the primary side to the secondary side of the transformer. The pulse ratio controller determines an ON period of the switching element according to a signal from the resonant period detector and an ON period of the switching element QH according to a signal from the rectifying/smoothing circuit.

REFERENCES:
patent: 6366476 (2002-04-01), Yasumura
patent: 6370043 (2002-04-01), Yasumura
patent: 7-63216 (1995-07-01), None

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