This charger for small batteries was obtained from the 1982 Radio Experimenter Handbook. The circuit is low current.
This circuit was found in a 1973 Radio Elettronica magazine from Italy. The circuit can be...
This power control was found in a 1968 power circuit manual. The SCRs are according to the power of...
The circuit in the figure uses two of the 4001's four gates to trigger a relay in a timed manner. The...