This circuit was found in a PE Hobbyst Handbook of 1989. It uses a black light fluorescent of the time. Small fluorescent black light from 1 to 4 W can be used.
This configuration, which appears in other projects in this section and on the website, shows how...
This circuit should be placed between a turntable and recorder or playback media from the input to...
This goniometer for the medium wave range was found in a 1967 documentation. It can be adapted to work...