This battery circuit provides a charging current of 500 mA depending on the solar panel. The switching circuit is from a National Semiconductor documentation from the 90s.
This conventional slow-moving circuit uses incandescent light bulbs, but can be changed to use...
This TTL dice is from an old publication from 1978, but it can still be assembled, as the...
The purpose of this circuit is to control magnetic door locks activated by the power grid. The...