This powerful transmitter for the 27 MHz band was found in a Japanese publication from 1961. The circuit is powered by battery and has the details of the coils given next to the diagram.
With the illustrated circuit we can run a DC motor in one direction or the other, depending on...
This timer for long time intervals is from the 1990 Motorola Linear Databook. The setting applies...
We found this circuit in a 1980s publication for amateur radio. It consists of an audio amplifier...