0 votes 0 votes A hysteresis type $TTL$ inverter is used to realize an oscillator in the circuit shown in the figure. If the lower and upper trigger level voltages are $0.9$ $V$ and $1.7$ $V$, the period (in $ms$), for which output is $LOW$, is __________. Analog and Digital Electronics gate2014-ee-3 trigger-level oscillator numerical-answers + – makhdoom ghaya asked Feb 11, 2017 edited Dec 3, 2019 by go_editor makhdoom ghaya 9.4k points answer comment Share See all 0 reply Please log in or register to add a comment.