Title:
電力線通信装置
Document Type and Number:
Japanese Patent JP4708145
Kind Code:
B2
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.
Inventors:
Fumio Ichihara
Application Number:
JP2005292522A
Publication Date:
June 22, 2011
Filing Date:
October 05, 2005
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H04B3/56
Domestic Patent References:
| JP2005063844A | ||||
| JP2004120740A |
Foreign References:
| US20040041228 | ||||
| US6809633 |
Attorney, Agent or Firm:
Shohei Oguri
Toshimitsu Ichikawa
Kimihide Hashimoto
Toshimitsu Ichikawa
Kimihide Hashimoto