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The efforts to improve the security of a lightning strike is giving a lightning early warning system. One method that can be used to get the warning is to measure the electric field in the atmosphere. Electric field mill (EFM) is an instrument that can be used to measure the strength of electric fields in atmosphere as a result of electrostatic charge in CB cloud and the ground. In this experiment,...
High frequency current transformer (HFCT) was designed to detect partial discharge in power apparatus. Circuit model of HFCT is built to determine the effects of various parameters to the output. Various designs of HFCT were tested to get the best bandwidth and sensitivity.
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