This digital to analog converter circuit was found in the March 1980 Radio Electronics magazine. The power supply should be symmetrical, and the digital controls can be TTL.
We found this circuit with PUT in an American publication from the 1980s. PUT is not a common...
This circuit was found in a 90s Popular Electronics. The circuit uses components from that time,...
This electronic ignition for cars of the time was found in the Radio Electronics magazine of May...