Changeable Threshold Level Trigger Circuit

Published:2011/7/21 21:54:00 Author:Joyce | Keyword: Changeable , Threshold , Level, Trigger | From:SeekIC

As shown in the figure, with the setting characteristics of reset end feet 4 and trigger end feet 2 of 555, it can compose a RS trigger. Feet 5 is connected with the pressure dividing point 2/3 VDD of the resistance within the substrate. Adding an adjustable control voltage on feet 5 would change the threshold level and trigger level to compose a changeable threshold level Schmidt trigger. C1, C2 are high frequency filter capacitances used to decoupling.



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