This circuit was found in an Elektor from the 90s. It is a circuit that generates different types of sound effects. The components are still common today.
The purpose of this circuit is to automatically turn a water pump on and off. Sensor 1 is the...
This NOR or NO-OR function circuit can be implemented with two or more general purpose...
This circuit has an interface for a multimeter or electronic voltmeter. We found it in a 90s...