Found in the September 1982 issue of Radio Electronics magazine, this circuit triggers a relay intermittently. Triggering is done by a reed switch, but other types of sensors can be used.
This lockable two-position servo control system was found in documentation from the 1990s. The...
The battery charger shown in the figure uses two 60 W incandescent bulbs in series to limit the...
The accuracy of this 3-digit digital capacitor meter depends on the tolerance of the components used and...