Unlike the previous circuit this one trigger when the temperature drops below the set value. The circuit is from June 1986 Radio Electronics magazine.
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...