Using a BA1404 integrated circuit this small FM stereo transmitter was found in a Radio Electronics magazine from October 1989. The coils are indicated.
This is yet another simple LED driving game circuit that appears in several other versions on this site....
We found this circuit in a 1991 publication, but it can be assembled with more modern components. We can...
We found this oscillator in a 1979 amateur radio documentation. The circuit can use transistors like the...