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Leakage current is the most important parameter in measuring electrical safety performance. A leakage current measuring system which meets multiple IEC standards is designed based on TMS320F2812 in the paper. Pretreatment amplifying circuit adopts high precision linear optocoupler HCNR201 and broadband amplifier HA7-5127-5. AD converter is the embeded 12-bit A/D in the DSP. Magnification times of...