This trigger produces an output pulse when zeroing the input signal. The circuit is from a documentation from the 70s, presenting a hysteresis of 100 mV.
This circuit is from an old publication from 1977 and can be implemented with more modern...
This is the traditional 555 monostable configuration found at many points in this section and on...
This circuit was obtained in a 1991 Electronics Handbook. The publication no longer exists, but...