We found this circuit in documentation from the 90s. The circuit uses components that are still common today, turning off a load after the programmed time. The time is given by the capacitor.
We found this circuit in an American publication from 1977. The integrated circuit is the 7400 and the...
With 3 transistors, we found this receiver in a documentation from 1966. The circuit has an output...
This circuit detects when a powered circuit suffers a malfunction, lighting an LED. The supply...