Published:2011/5/2 5:36:00 Author:Christina | Keyword: Transistor, storage time, test circuit | From:SeekIC
This circuit uses two pieces of CMOSCC4001. If the measure time and the storage time of T is less than the maximum allowable value, the green light turns on, this means qualified; the TS is too large, so the red light turns on, this means unqualified.
Add the pulse to begin testing, point A's pulse width is about 50μS, during the test tube T conducted. Point B's pulse width is about 4μS, this is the T's maximum allowable storage time. If TS<4μS, the C will be 1 , RS flip-flop does not turn, so the red light turns on, green turns off.
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