This circuit was obtained from an 80s factory manual. The integrated circuits used are uncommon today, but the diagram is for reference only.
This circuit was found in a 1965 US documentation. The circuit converts a DC signal to a 400 Hz AC...
This circuit is from Popular Electronics from March 1991. It can still be assembled with the...
This circuit was found in a 90’s Popular Electronics. The circuit is used to analyze noise in...