A Timer-Off Application

By Terry Bartelt

Learners examine how a PLC Timer-Off instruction is used in the operation of an automotive paint booth.

Hall-Effect Sensor Application

Learners view practical examples of how a Hall-effect sensor is used.

Overflow and Underflow for Signed Binary Numbers

By John Casey, Terry Bartelt, Terry Fleischman

Learners examine the occurrence of overflow and underflow conditions in a programmable logic controller. It is recommended that users view the learning object “Signed Binary Numbers” in advance of this object.

Rotating Vector Representation of the Sine Function

The learner will be able to represent steady-state AC sinusoidal signals using phase vectors, which will lead to a simplified technique of analyzing AC circuits in a very similar way that we analyze DC circuits.

Series RL Circuit Vector and Circuit Analyzer

By James Bourassa, John Rosz

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Ohm's Law Practice Problems #3

By Patrick Hoppe

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.

Comparing Electronic and Hydraulic Components

Learners read about the similarities of electronic and hydraulic components and then match the schematic symbols in a drag-and-drop exercise.

Unloading Valves

By Terry Bartelt, Stephen Schneider

In this animated object, learners examine the internal structure of an unloading valve. This learning object includes a video clip demonstrating the use of an unloading valve in a metal stamping application.

The Processor Scan Cycle

Learners examine the three steps of a processor scan cycle.

Internal Elements of a 555 Timer

In this highly interactive object, learners examine the internal elements of a 555 IC and their operation. Learners then test their knowledge in a variety of exercises.

Apparent Power

Learners read an explanation of the concept of apparent power in a power distribution system involving motors, generators, and transformers. A quiz completes this interactive lesson.

Analog Voltmeter Operation

Students follow the procedure to measure voltage with an analog voltmeter. They examine the use of the Function Switch and the Range Switch. A brief quiz completes the activity.

The Spring-and-Diaphragm Actuator

Learners study an animation of a spring-and diaphragm actuator controlling the opening of a flow valve.

The Purge Level Measurement Method

In this animated object, learners examine how the purge pressure system is used to measure levels of material. A brief quiz completes the activity.

Hydraulic Pumps

In this animated object, learners examine how various types of positive and non-positive displacement hydraulic pumps work.

Testing a Hydraulic Pump

Learners follow an animated test procedure to determine if the parts of a hydraulic pump are worn.

Hydraulic Filters

Studies show that more than 75 percent of all hydraulic system failures are a direct result of unclean oil. In this interactive object, learners examine the three primary types of hydraulic system filters. A brief quiz completes the activity.

Hydraulic Brake Valves

The operation of a hydraulic brake valve, including the internal components, is presented using animations.

Types of Pneumatic Compressors

Learners examine the operation of positive and non-positive displacement compressors used in pneumatic systems.

Wound-Rotor Motors

Learners study animation showing the operation of an AC wound-rotor motor with its external starting resistors. A short quiz completes the activity.

Thru-Beam Photoelectric Sensors

This animated lesson shows the operation and characteristics of thru-beam optical sensors.

Three-Phase Delta Transformer Calculations

By James Bourassa

Using a memory shortcut for calculations, the learner determines line and phase values of current in a three-phase AC configuration. Practice problems complete the activity.

Average Voltages of Pulsating DC Voltages

In this learning activity, learners will learn to calculate the average voltage produced by half-wave and full-wave rectifiers.

Voltage Drops in a Series Circuit

Students study the concept that the voltage drop across a series circuit resistor is proportional to its resistance. They then complete a brief quiz.

Calculating Horsepower, RPM, and Torque

In this animated and interactive object, learners examine the formula for horsepower and work practice problems.