| 发明名称 |
EARPLUG TYPE HANDSET EQUIPPED WITH AN INPUTTOUTPUT SEPARATOR |
| 摘要 |
PURPOSE:To reduce a handset in size and weight by connecting a common node of acoustic-electric converter coils connected in series to either the ground side or the input-output side in such a way that the impedance value is the same in either case. |
| 申请公布号 |
JPS5247715(A) |
申请公布日期 |
1977.04.15 |
| 申请号 |
JP19750123419 |
申请日期 |
1975.10.13 |
| 申请人 |
TANI DENKI KOUGIYOU KK |
发明人 |
AKIYAMA MASAKI |
| 分类号 |
H04B1/46;H03H7/48;H04M1/05;H04M1/58;H04R1/00;(IPC1-7):04R1/08;04B1/46;04R1/10;04M11/00;03H7/48 |
主分类号 |
H04B1/46 |
| 代理机构 |
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代理人 |
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