In this lesson, Dorian McIntire demonstrates a simple light and dark detector by activating an LED to illustrate the voltage divider principle.
Now that you know how an LED can be turned on or off using a photocell, learn how to calculate the correct resistor values for a light and dark detector.
In this lesson, electrical engineer Dorian McIntire walks through sinking and sourcing cards, as well as an introduction to PLC interfacing.
Now that you know about interfacing requirements for PNP and NPN sensors, it's time to see how to plan and connect the sensors to a PLC input card.
In this lesson, electrical engineer Dorian McIntire demonstrates the versatile detection ability of capacitive proximity sensors on a range of materials.
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