This lead-acid battery charger was found in a Popular Electronics from the 90s. The circuit has a maximum current of 2 A, being suitable for powering inverters in emergency lighting systems.
This simple CMOS touch switch was obtained in a 1987 publication. All components are common and the...
The load controlled by this circuit depends on the triac used. The circuit is from Electronics Now magazine...
This didactic circuit from a 1977 Radio Shack documentation shows how to use the 741 as a...