In this charger the current is limited by the incandescent lamp. Lamps from 40 to 100 W can be used and even connected in parallel, depending on the load.
This voice scrambler circuit was obtained from an American 1990s documentation. Used operational...
This circuit was obtained in a 1979 English magazine. This circuit is a treble filter that,...
This circuit, from a 1975 Motorola manual, uses a power Darlington transistor of the time. We can...