The followingNE555 datasheetincludes another 555 Precision
Timers series which is produced byTexas Instrumentssuch NA555, SA555,
and SE555. In the datasheet you can find application information for designing
monostable operation, astable operation, missing-pulse detector, frequency
divider, pulse-width modulation, pulse position modulation and sequential timer
using the NE555 series with circuit diagram for each application.
The figure above shows youthe NE555 Missing-Pulse Detector Circuit Diagram. According to the datasheet, this circuitry design can be used to detect a missing pulse or abnormality long spacing between consecutive pulses in a train of pulses. When the pulse spacing is less than the timing interval, the timing interval is retriggered continuously by the input pulse train.
We can make the spacing of pulse a little bit longer, missing the pulse or terminating pulse train to complete the timing interval and thereby generating a specific output pulse (as shown in the datasheet). Please complete read of NE555 Missing-Pulse Detector Circuit Diagram in the NE555 Datasheet (source: hqew.net).
BAS29215
The figure above shows youthe NE555 Missing-Pulse Detector Circuit Diagram. According to the datasheet, this circuitry design can be used to detect a missing pulse or abnormality long spacing between consecutive pulses in a train of pulses. When the pulse spacing is less than the timing interval, the timing interval is retriggered continuously by the input pulse train.
We can make the spacing of pulse a little bit longer, missing the pulse or terminating pulse train to complete the timing interval and thereby generating a specific output pulse (as shown in the datasheet). Please complete read of NE555 Missing-Pulse Detector Circuit Diagram in the NE555 Datasheet (source: hqew.net).
BAS29215
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