发明公开
- 专利标题： Battery feed circuit for a pair of subscriber lines
- 专利标题（中）： 电源电路用于对用户线。
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申请号： EP85106673.8申请日： 1985-05-30
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公开(公告)号： EP0163308A2公开(公告)日： 1985-12-04
- 发明人: Kawami, Shigeru , Tabu, Takashi , Ayano, Mitsutoshi , Shibuya, Kiyoshi , Itoh, Shin-ichi
- 申请人： FUJITSU LIMITED
- 申请人地址： 1015, Kamikodanaka, Nakahara-ku Kawasaki-shi, Kanagawa 211 JP
- 专利权人： FUJITSU LIMITED
- 当前专利权人： FUJITSU LIMITED
- 当前专利权人地址： 1015, Kamikodanaka, Nakahara-ku Kawasaki-shi, Kanagawa 211 JP
- 代理机构： Füchsle, Klaus, Dipl.-Ing.
- 优先权： JP108500/84 19840530
- 主分类号： H04M19/00
- IPC分类号： H04M19/00
摘要：
Battery feed circuit, arranged for a pair of subscriber lines (A, B), including a voltage drive circuit (4, 5) including an operational amplifier (40, 50) having a predetermined output impedance determined by an alternating current terminal impedance for the pair of subscriber lines (A, B), voice signals and induced noise signals being terminated by the voltage drive circuit (4, 5).
公开/授权文献
- EP0163308B1 Battery feed circuit for a pair of subscriber lines 公开/授权日：1991-02-06
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