This circuit with germanium transistors is from 1960 and was found in Mullard's transistor application manual from 1960. The circuit can be adapted to use more modern transistors.
This circuit was found in a 1999 publication. Its purpose is to flash two LEDs according to the...
This circuit is based on the well-known digital module ICL7107 feeding 4 displays with...
This configuration can be found in other articles in this section. This was obtained in a 2000...