The diagram is from a 1990s document. The integrated circuit must be equipped with a heat sink. The table shows the component values for different output voltages.
Photoelectric cells can be used as sensitive light sensors. However, the low voltage they generate...
With the illustrated circuit we can run a DC motor in one direction or the other, depending on...
In this circuit the relay triggers on when light falls onto the sensor, a common LDR. Power supply...