The LVDT DC Conversion Circuit
By Terry Bartelt
Learners study how a circuit converts the AC output of a linear voltage differential transformer (LVDT) into variable DC voltage. It is recommended that learners view the learning object IAU7807, “The LVDT: A Linear Voltage Differential Transformer in Action” before going through this object.
On-Off Control of a Feedback System
Learners examine the operation of the on-off control mode using a home heating example. A short quiz completes the activity.
The PLC Examine-Off Instruction
In this animated object, learners examine the operation and programming requirements of a PLC Examine-Off instruction. A brief quiz completes the activity.
Hydraulic Cylinder Speed (Screencast)
In this screencast, learners examine why the piston of a hydraulic cylinder extends slower than it retracts. A brief quiz completes the activity.
RPM of AC Motors
By Terry Bartelt, Terry Fleischman
Learners study factors that affect the synchronous speed of an AC motor: the applied AC frequency and the number of stator poles.
Cavitation
By Terry Bartelt, Stephen Schneider
In this animated activity, learners examine how cavitation occurs in a hydraulic pump. A video clip is included. Learners then test their knowledge in a brief quiz.
Hydraulic Mechanical Force
This animated lesson shows how to calculate the amount of force generated by hydraulic cylinders.
Integral Reset Setting
Learners study animations showing the integral function of a closed-loop control system and the difference between the two types of integral controller settings, reset rate and reset time. A short quiz completes the activity.
Comparing Electronic and Hydraulic Components (Screencast)
Learners read about the similarities of electronic and hydraulic components and then match the schematic symbols in a drag-and-drop exercise.
Feedback System Application
In this animated and interactive object, learners examine a heat exchanger as an example of an automated closed-loop system.
PLC Timer Instructions
Learners examine the animated Timer-On Delay instruction and the Timer-Off Delay instruction of a PLC timer. A brief quiz completes the activity.
Pneumatic Air Conservation
In this animated activity, learners read about air loss in a pneumatic system and ways to reduce the leakage. The object includes audio.
Pneumatic Cylinder Flow Control
Learners use animated needle valves and check valves to change the speed of a pneumatic cylinder as it extends and retracts. A brief quiz completes the learning object.
Hydraulic Color Code Drill
By John Rosz, Terry Bartelt
This interactive learning object is designed to help learners memorize the color code used on some hydraulic schematic diagrams. Learners quiz themselves using electronic flashcards.
Hall-Effect Sensor Application
Learners view practical examples of how a Hall-effect sensor is used.
The LVDT: A Linear Voltage Differential Transformer in Action
In this animated object, learners study the operation of a linear voltage differential transformer. A brief quiz completes the activity.
Armature Reaction
In this animated activity, learners study how the magnetic field of an armature can distort the DC motor's main magnetic field. A brief quiz completes the object.
Humidity Measurements
Learners examine dew point and the two types of humidity values, absolute and relative, along with the types of instruments used to measure them. The activity includes a video clip and a quiz.
Crank Slider Velocity
By James Bourassa
In this animated object, learners identify the basic parts and operation of a crank slider mechanism. They also follow the steps to use rotational input velocity to determine the linear output velocity of a slider component.
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.
Analog Position Control (Screencast)
In this animated object, learners examine an analog closed-loop feedback system that uses potentiometers to control the position of a gear rack.
Inductive Proximity Sensors (Screencast)
Learners examine the operation of an inductive proximity sensor in this animated object. A brief quiz completes the activity.
High-Low Speed Drive Adjustments
Learners examine the circuitry in a DC variable speed drive that prevents the motor from running at 0 rpm or at maximum speed under certain conditions.
Industrial Control Classifications
In this animated object, learners examine automated manufacturing systems classified as motion control, batch process control, and continuous process control.
The Reynolds Number
In this animated learning object, users study the factors that affect a pipe’s fluid flow and how those factors pertain to a numerical value (the Reynolds Number).