This circuit is used to sense temperatures in degrees Celsius and Fahrenheit. The circuit is from Special Projects from 1983 in Radio Electronics magazine.
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...