The R3 trigger circuit with adjustable trigger level

Published:2012/12/21 1:18:00 Author:Ecco | Keyword: R3 trigger , adjustable trigger level | From:SeekIC

The circuit has two input terminals, i.e. the triggered terminal ( pin 8 ) and reset terminal ( pin 12 ). The trigger level is adjusted by potentiometer RP (10kΩ). Figure b illustrates the pulse waveform. At time t1, the input voltage UE = U8 is lower than the setting trigger voltage U6 = U7, and the reset input remains high ( + U.S. ) level, the pin 14 outputs high level to block the output terminal (pin 2), then U2 is in low level. Until UE = U8 achieve the setting trigger voltage U6 = U7, output voltage U2 only changes to high from low level.



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