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.
This fiber optic receiver was obtained from a 1978 documentation. We can use any modern...
This circuit was found in a Popular Electronics documentation from the 90s. It is possible to switch...
This circuit was found in an old Motorola documentation from the 70s, as it uses one of its...