Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.

Learners view examples of devices that prevent mistakes from occurring.

In this animated object, learners examine a closed-loop feedback system that uses digital circuits to control the position of a gear rack.

In this learning activity you'll explore how a fuse de-energizes a parallel circuit when too many lamps are connected to a power outlet.

Students read an introduction to transformers that includes schematic symbols, turns ratios, mutual inductance, and the coefficient of coupling.

In this learning activity you'll solve three binary subtraction problems using the 2's complement method.

In this interactive object, learners solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated by each resistor.

In this animated object, learners examine the two types of optical encoders used in automation applications: incremental and absolute. A brief quiz completes the activity.

In this learning activity you'll review independent and dependent variables and view a demonstration of the positive and negative correlation.

In this animated object, students examine the steps for wiring an electrical circuit from reading a schematic diagram.

Learners examine how air-to-open valves and air-to-close valves are used in different situations. A brief quiz completes the activity.

Students view drawings of the dc analysis of a voltage-divider biased NPN transistor.

Learners view the operation of a full-wave rectifier which has two diodes.

In this screencast, learners examine the internal elements of a 555 IC and their operation.

Learners review the three formulas for power and work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and asked to solve for power. Immediate feedback is provided.

In this animated activity, learners examine the conversion of electrical energy into an electrostatic charge within the dielectric material of a capacitor.

In this animated object, learners observe the changes inside the DC shunt motor that could cause the motor to break apart when its field coil opens. A short quiz completes the activity.

Learners view an animation showing the one-shot operation of a programmable logic controller.

In this interactive object, learners read a description of value-added and non-value-added activities and then place various work duties into these two categories.

Learners review Ohm's Law and then work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and are asked to solve for the third.

In this animated and interactive object, the learner uses a Casio fx-260 calculator to solve for the magnitude of the resultant and of one of the component forces in a right triangle.

In this interactive object, students calculate capacitive reactance, phase angle, impedance, and power in series RC circuits.

In this animated lesson, the learner examines how a ladder circuit causes the cylinder of a hydraulic circuit to make a single extension and retraction.

Learners view colorful animations showing the operation of a VR stepper motor.

Learners view animations showing how to change the connections to cause a DC motor to reverse its rotation. A short quiz completes the activity.