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 circuit was found in the September 1976 issue of Radio Electronics magazine. The circuit is...
This stage of low power audio amplification was very common in devices powered by the 60's and...
This transistorized “grid dip” oscillator was found at Radio Electronics in June 1953. The...