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 from a Radio Electronics from February 1976 activates the relay in two different ways...
The integrated circuit used in this project is unusual and it includes internal transistors that...
This circuit is quite old, from 1964, but can still be mounted with BC558 transistors. The circuit is...