We found this circuit in documentation from the 90s. The circuit uses components that are still common today, turning off a load after the programmed time. The time is given by the capacitor.
Found in Popular Electronics from 1969, this circuit uses a neon lamp from the time that had...
This receiver was found in the Radio Electronics magazine of March 1953. It tunes to the medium wave...
The figure shows how to use the XR2206 to generate sinusoidal signals in a different way. The...