| 摘要 |
PURPOSE:To simplify circuit constitution and to improve functions by stopping a backward refulx by time division. CONSTITUTION:Amplifier 3 from interlocutor 1 to interlocutor 2 turns on with time-vidision pulse string P1P3P5P7... and turns off with P2P4P6. Amplifier 5 from interlocutor 2 interlocutor 1 turns on with time-division pulse train P2P4P6... and turns off P1P3P5.... Gate 4 control amplifier 3 in time-division mode. Transmission from interlocutor 1 to 2 is performed by amplifier 3 only in the time zone of pulse train P1P3P5.... As a result, a reflux returning from interlocutor 1 to amplifier 3 via amplifier 3 and amplifier is not transmitted because of reversing in phase between pulse trains P1P2P3.... Similarly, a reflex from interlocutor 2 to 1 is not generated. |
