Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate
2006-10-03
2009-12-15
Tso, Edward (Department: 2858)
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
C307S002000, C455S062000, C455S343100
Reexamination Certificate
active
07633774
ABSTRACT:
A power supply apparatus has a coupled transformer that inputs and outputs a communication signal and a capacitor that has high impedance to a commercial power supply frequency and low impedance to a communication signal frequency. The capacitor is connected between a primary winding of the coupled transformer and a power reception terminal. To both ends of the capacitor, a switching regulator is connected via a noise reduction circuit. To a secondary winding of the coupled transformer, a modem of a power line communication apparatus is connected. In the configuration, the coupled transformer and the switching regulator are thus connected in series.
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International Search Report dated Nov. 21, 2006.
Dickson Wright PLLC
Panasonic Corporation
Tso Edward
Williams Arun
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