By Terry Bartelt
In this animated object, learners study how the internal parts of an AC synchronous motor interact with magnetic fields to cause rotation. A short 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.
In this animated object, learners examine how various types of positive and non-positive displacement hydraulic pumps work.
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.
Sizing Motor Overloads
By Terry Bartelt, Pat Jensen
Learners use the National Electrical Code to determine the size of a motor overload protection device.
DC Compound Motors
Learners study animation showing the operation of cumulative and differential DC compound motors. A short quiz completes the activity.
The Frequency of an AC Generator
By Walter Hedges, Terry Bartelt
Learners study the factors that determine the frequency of an AC generator, such as the rotational speed of the armature or the number of stator poles.
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.
Converting Between Gray and Binary Codes
Learners follow steps to convert numbers from Gray code to binary code. They then view steps to change binary values to Gray code numbers.
Single-Phase Motors: Introduction to Phase-Splitting
By Terry Bartelt, Terry Fleischman
Learners will understand how the interaction of the armature magnetic field and the rotating stator field cause the rotor of a single-phase AC motor to turn.
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.
The Variable Reluctance Stepper Motor
Learners view colorful animations showing the operation of a VR stepper motor.
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.
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.
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.
Absolute Optical Encoders
The operation and characteristics of an absolute optical encoder used in automation applications are presented.
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.
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.
Photoelectric Reciprocation Circuits
This animated lesson shows how a photoelectric sensor, connected to a ladder circuit, causes the cylinder of a hydraulic circuit to extend and retract.
Hydraulic Color Code Circuit Example
In this animated and interactive object, learners use a color code to understand the operations of a hydraulic circuit. A brief quiz completes the activity.