GOST 19138 4-1973 Thyristors Method for measuring turn-on rise and delay times《晶闸管 接通、上升和延迟时间测定方法》.pdf

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GOST 19138 5-1985 Triode thyristors Method for measuring turn-on rise and delay time《三极晶闸管 控制极接通、上升和延迟时间测定方法》.pdf

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