This circuit using programmable unijunction transistors was found in General Electric documentation from 1964. LEDs can be used instead of lamps.
This circuit is from 2001 documentation, serving to multiplex stereo signals for FM transmitters. The...
This circuit reverses the signal if both positive and negative. We found it in an American...
Found in a publication by Gernsback from 1960, this circuit makes use of germanium transistors of the time....