By Terry Bartelt
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.
SLC-500 Data File Elements
Learners examine the elements of a data file memory of an Allen-Bradley SLC-500 programmable controller. A quiz completes the activity.
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.
Operation of Full-Wave Bridge Rectifier
By Matthew Treu
In this learning activity you'll explore the operation of a full-wave bridge rectifier circuit.
Electronic Workbench Basics: Opening a File for Simulation
By Patrick Hoppe
Students read an introduction to the electronic workbench and view a demonstration of how to open a file for circuit simulation.
Signed Binary Numbers: 2's Complement
By John Casey, Terry Bartelt
Learners use this interactive and animated object to examine the use of binary numbers in a programmable logic controller. A brief quiz completes the activity.
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.
In this animated object, learners examine how PLC up/down-counters are used to control an automated parking lot gate.
The Basic Operation of a Diode
In this interactive and animated object, learners examine the operation of a semiconductor diode when it is forward and reverse biased. A brief quiz completes the activity.
The Hydraulic Color Code
Learners read an explanation of the color code used on schematic diagrams for hydraulic circuits. Circuit examples for each color are shown.
Kirchhoff's Current Law - Parallel Circuits
In this learning activity you'll explore Kirchhoff's Current Law and view examples of its application.
Ignition System of a Combustion Engine
Students view the parts and movements of a combustion engine in this animated activity. Each part is described.
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.
Designing a Cylinder Dwell Circuit
This animated lesson shows how a ladder circuit uses timer-on delays to cause an extrusion machine to operate.
Flow Control Valves
In this colorful and animated activity, learners study the operation of a needle valve and the operation of the needle valve with a check valve. A brief quiz completes the activity.
Testing a Hydraulic Pump
By Terry Bartelt, Stephen Schneider
Learners follow an animated test procedure to determine if the parts of a hydraulic pump are worn.
Learners view an animation of a counterbalance valve in operation and examine the valve’s internal structure.
Physics Concepts in Hydraulics
In this animated activity, learners view the following physics concepts in action: force, friction, horsepower, work, power, inefficiency, resistance, inertia, and energy.
PLC Sinking Input Modules
In this animated object, learners examine how to wire field devices to a PLC sinking input module.
Sizing Motor Overloads
By Terry Bartelt, Pat Jensen
Learners use the National Electrical Code to determine the size of a motor overload protection device.
Learners study animation showing the operation of an AC wound-rotor motor with its external starting resistors. A short quiz completes the activity.
DC Compound Motors
Learners study animation showing the operation of cumulative and differential DC compound motors. A short quiz completes the activity.
Thru-Beam Photoelectric Sensors
This animated lesson shows the operation and characteristics of thru-beam optical sensors.
Absolute Optical Encoders
The operation and characteristics of an absolute optical encoder used in automation applications are presented.
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.