This classic windscreen wiper interval setup was found in American documentation from the 90s. The circuit can be found with variations at other points on this site.
Critical components of this project are the Geiger tube and the 300V battery. The battery can be...
The instrument is a common multimeter on the lower voltage scale. The FET can be BF245 or MPF102. The...
Suggested by National Semiconductor in a documentation of the 90s, this circuit uses a power...