This charger for small batteries was obtained from the 1982 Radio Experimenter Handbook. The circuit is low current.
We found this circuit in English documentation for PCs from 1996. The ZN448 is a very uncommon...
This circuit is from a Fairchild digital clock module shown in the March 1977 issue of Radio...
This circuit is regulated by zener and provides a voltage of 9 V. The circuit is from a Radio...