This Hughes circuit is from 1968. Equivalent modern components can be used. The input impedance is 1000 M ohm.
This circuit was found in a 1968’s publication and uses germanium transistors. Equivalents can be...
This common metronome configuration has already appeared in several of our articles and projects. This...
Using a 4018 IC and one gate of the 4081 it is possible to divide the frequency of digital signals by...