This circuit was found in a RE Experimenter Handbook from the 90's. The components are of the time, rare nowadays, except the 555 and 4017.
This circuit was found in the component's own manual, which is not very common nowadays. Note that...
The circuit shown is a Step-Down converter that can provide a 5 A output with 4 to 18 V inputs. The...
This circuit, from a 1988 documentation, makes successive actuation of the shower to control the...