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A capacitor cross-coupled (CCC) wideband common-gate low-noise amplifier (CGLNA) with improved linearity and frequency response is presented. A novel differential active inductor (AI) is designed to improve the in-band gain flatness and high-frequency gain using the gate-inductive gain-peaking technique. The AI prevents the small-signal current flowing to the ground through the gate–drain capacitors...
Voltage sag has become one of the most power quality problems of customer complaints. This paper researches on how to use fault current limiter (FCL) to relieve the voltage sag of sensitive load node. Assuming that three phase short circuit fault occur on every bus in power grid respectively, the voltage sag matrix is determined, buses in vulnerability area of sensitive load node are found. Sensitive...
The transesterification of Jatropha oil and methyl acetate to biodiesel catalyzed by Novozym 435 (N435) was explored. The organic solvent and the factors of influenced reaction were optimized.The optimum reaction conditions were 6% of N435 based on the Jatropha oil weight, the molar ratio of n-hexane to Jatropha oil was 19, 10% of organic trihydroxymethyl aminomethane base on the Jatropha oil weight,...
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