Described in the December 1969 Radio Electronics magazine, this circuit is intended to supply the previous circuit. The circuit is not isolated from the power grid.
This circuit works with only 1.5 V and can be powered by a solar panel. The circuit is from 1991....
This digital timer provides timings from 1 minute to 10 hours with indication on a 3-digit...
This sensitive Japanese mid-wave receiver from the 1960s has an output power of 45 mW and is...