Design and analysis of optical coupling isolation amplifier for J-TEXT tokamak
- 1. Huazhong University of Science and Technology, Wuhan (China)
- 2. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Wuhan (China)
Description
A wideband optical coupling isolation amplifier is presented. Experimental results showed that the presented isolation amplifier can transmit an analog signal from dc to 2.7 MHz 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. (authors)
Additional details
Publishing Information
- Journal Title
- Nuclear Fusion and Plasma Physics
- Journal Volume
- 35
- Journal Issue
- 3
- Journal Page Range
- p. 265-271
- ISSN
- 0254-6086
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 51032891
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- AMPLIFIERS; CAPACITORS; CONTROL SYSTEMS; DESIGN; MHZ RANGE 01-100; SIGNALS; SIMULATION; TOKAMAK DEVICES
- Descriptors DEC
- CLOSED PLASMA DEVICES; ELECTRICAL EQUIPMENT; ELECTRONIC EQUIPMENT; EQUIPMENT; FREQUENCY RANGE; MHZ RANGE; THERMONUCLEAR DEVICES
Optional Information
- Notes
- 9 figs., 1 tab., 10 refs.