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| 引用本文： | ������,���� ��,��������,��֣ ��,���� ��,��ׯ ��.����J-TEXT װ�õĹ���ϸ���Ŵ�����������[J].核聚变与等离子体物理,2015,35(3):265-271. |
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| 作者姓名： | ������ ���� �� �������� ��֣ �� ���� �� ��ׯ �� |
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| 作者单位： | (1. ????????????????????????????人 430074?? 2. ???п??????????????????????人 430074) |
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| 摘 要： |
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Design and analysis of optical coupling isolation amplifier for J-TEXT tokamak |
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| PAN Ming-jun,ZHANG Ming,LI Ting-ting,ZHENG Wei,RAO Bo,ZHUANG Ge.Design and analysis of optical coupling isolation amplifier for J-TEXT tokamak[J].Nuclear Fusion and Plasma Physics,2015,35(3):265-271. |
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| Authors: | PAN Ming-jun ZHANG Ming LI Ting-ting ZHENG Wei RAO Bo ZHUANG Ge |
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| Institution: | (1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan 430074; 2. Huazhong University of Science and Technology, Wuhan 430074) |
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| Abstract: | A wideband optical coupling isolation amplifier is presented. Experimental results showed that the presented isolation amplifier can transmit an analog signal from dc to 2.7MHz with good linearity and low propagation delay. Effects of the compensation capacitor on the frequency characteristics of the isolation amplifier was studied by simulation analysis. Meanwhile the mathematical model of the circuit was established with parts of the parasitic parameters taken into consideration. The linearity and frequency characteristics of the circuit was studied, combining theoretical analysis, simulation and test. At last, the availability of the presented isolation amplifier was verified in the Langmuir probe floating potential measurement system on J-TEXT tokamak. |
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