Found in an Elektor from the 90s, this circuit is used with analog TV signals. The components are still common today.
Found in a 1967 RCA manual, the purpose of this circuit is to keep the coffee warm in an electric...
The operational amplifier used in this application is uncommon today. This Raytheon circuit can be...
We found this circuit in an article of our own from 1992. The circuit is based on an integrated circuit...