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 allows the coding of several relays from coded keys that must be activated, according to...
In this circuit the relay triggers on when light falls onto the sensor, a common LDR. Power supply...
An irregular signal can be converted into a pulse of duration determined by the switching...