This circuit, which controls both the temperature and the level of a liquid in a reservoir, was found in an Electronic Design from the 90s. The circuit is based on a double 555.
This biestable touch circuit was found in American 1980s documentation. The circuit must not be...
This simple electronic toy organ produces an interesting sound, which can be used by the most...
This circuit is from an old documentation from 1995, but it can be easily assembled today by the...