This charger for small batteries was obtained from the 1982 Radio Experimenter Handbook. The circuit is low current.
The circuit presented was obtained from a 1976 Italian Radio Elettronica but can be easily...
This crystal-controlled circuit with 60 mW output power is in the Radio Electronics magazine of...
This circuit is from a 1981 publication. The DC supply can be made with voltages from 6 to 12 V...