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

By Terry Bartelt

Learners follow steps to convert numbers from Gray code to binary code. They then view steps to change binary values to Gray code numbers.

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 Zener Diode: Practice Problems

By Patrick Hoppe

Students complete 10 practice problems. These deal with the determination of series current, zener current, and load current, and if the zener diode is operating in the breakdown region.

Op Amps 2: The Non-Inverting Amplifier

By Todd Van De Hey

The learner will describe the non-inverting op-amp configuration and calculate the circuit gain.

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.

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.

The Welder's Tool Bag

By lloyd

In this learning object, you’ll explore what tools should be a part of every welding tool bag.

Ohm's Law Practice Problems #3

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.

Interpreting the Resistor Color Code

Students examine how to interpret resistor color code bands to determine resistance values and tolerance ranges. This interactive learning object has audio content and includes exercises.

Current Divider Rule Practice Problems

In this interactive object, learners review the CDR and work nine problems. Immediate feedback is given.

Clock Pulse Triggering of Flip-Flops

This learning object shows the symbols used to represent the type of pulse required at the clock input to activate flip-flops.

Demultiplexers

In this animated object, learners examine the operation of a demultiplexer along with the data output and select lines. A brief quiz completes the activity.

Pulse Train Fundamentals: Practice Problem #1

In this interactive object, learners determine the pulse width, period, duty cycle, and frequency of a waveform.

Calculating Blank Size for Rolled Sheet Metal

By Dave Hoffman

In this interactive object, students read how to calculate the blank size for cylinders in a three-roll pinch roller. A calculator is required for the brief quiz that completes the activity.

Calculating Lengths for Tube Bending

The learner reads an explanation of how to determine lengths for tubing and pipe bending and then performs calculations in an interactive exercise. Two methods for determining angle bends are shown. A calculator is required.

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.

The Variable Reluctance Stepper Motor

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

Ignition System of a Combustion Engine

Students view the parts and movements of a combustion engine in this animated activity. Each part is described.

Logic State Indicators

Instructions on how to interpret state indicator symbols for input and output terminals of digital devices is presented.

Boolean Theorems (Single Variable)

Students analyze the eight single variable Boolean theorems and their expressions.

Determining Punch & Dies for Press Brake Forming

Introduction to selecting the proper punch and die for air bending or bottoming when forming on a press brake. Includes charts and methods for selection.

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.