This circuit is used to turn on the headlights when it gets dark. The circuit is from an Electronics Now magazine from October 1998. The power transistor must be equipped with a heatsink.
This modern regenerative receiver was featured in the March 1994 issue of Electronics Now...
As part of a larger project, we found this modulation meter in the August 1994 Electronics Now...
This small receiver for the medium wave range was found in Radio Electronics magazine from July...