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 circuit appeared in the June 1990 issue of Radio Electronics magazine. Integrated circuits must...
Lockout shooting, due to the incidence of light, can be achieved with the circuit in the figure. In...
This circuit can function either as a crystal or galena receiver with a pre-amplifier using a FET...