In the figure we have the way to control a flip-flop with the 4069 from positive pulses. The circuit can be used as a shield, if powered by 5 V.
This power supply for TTL and CMOS circuits with a voltage of 5 to 15 V was found in the Special...
The assembly of this interesting circuit appeared in Radio Electronics magazine in June 1958....
We found this circuit in the June 1992 issue of Radio Electronics magazine. The sensor is a common...