This circuit was obtained in a 1969 Mullard manual. The transistors are from that time. The input sensitivity is 300 mV.
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...