Students read about light-emitting diodes, including LED voltage and current, and how to protect against reverse voltage.

In this animated and interactive object, learners study how a DC circuit, consisting of a diac, a capacitor, and two resistors, causes a light-emitting diode to turn on and off. A brief quiz completes the activity.

The learner will gain an understanding of robot motion control by comprehending the fundamentals of the encoder.

Learners follow steps to calibrate a transmitter used in process control applications. A brief quiz completes the activity.