This circuit was found in an 80's General Electric documentation. The circuit uses uncommon components today like the PUT. Unijunction admits equivalent.
This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of...
This circuit is from the 2005 Linear Technology Application Manual. The circuit must be powered by 5...
We find this circuit in a 1976 NASA handbook. The circuit can be designed based on current logical...