This circuit was found in a 1967 RCA documentation. The components are of the time. The circuit limits the current to 50 mA when the battery is fully charged.
The circuit shown below provides four adjustable reference voltages. Each of them is produced by a...
This powerful siren is suitable for warning or alarm systems. The components are current and the...
This circuit was found in the February 1990 issue of Radio Electronics magazine. The circuit uses...