PLC Counter Operation

By Terry Bartelt, Tom Yapp

Learners examine the two methods used by programmable logic controllers to perform a counting operation using addition or counter instructions. A brief quiz completes the activity.

Feedback System Application

By Terry Bartelt

In this animated and interactive object, learners examine a heat exchanger as an example of an automated closed-loop system.

Sensor Wiring Configurations

In this animated object, learners examine how two- three- and four-wire sourcing and sinking sensors operate. A brief quiz completes the activity.

Transistor Fundamentals: AC Coupling Capacitors

By Patrick Hoppe

Students view the design and function of an ac model for a transistor circuit.

Transistor Fundamentals: JFET Drain Curves

Students examine the drain curves for a JFET. They are also introduced to vocabulary terms and formulas.

Transistor Fundamentals: Review of Logarithms

Students review logarithms as they pertain to electronics.

Op Amp Fundamentals: The Inverting Amplifier

The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.

Op Amp Fundamentals: The Summing Amplifier

Students read an explanation of the summing amplifier and the formulas for closed-loop gain. An example is given.

Capacitors Series - Parallel: Practice Problems

Students complete 10 practice problems.

Motor Action (Screencast)

In this screencast, learners examine the interaction between a conductor that represents a motor armature and a magnetic field that represents a motorâ€™s main field. This interaction causes the shaft to turn.

Capacitor Values (Screencast)

In this screencast, learners examine the physical facets that determine the value of a capacitor.

The Hydraulic Color Code (Screencast)

In this screencast, learners read an explanation of the color code used on schematic diagrams for hydraulic circuits. Circuit examples for each color are shown.

Transfer Functions: The RC High Pass Filter

Learners read how the transfer function for a RC high pass filter is developed. The transfer function is used in Excel to graph the Vout. The circuit is also simulated in Electronic WorkBench and the resulting Bode plot is compared to the graph from Excel.

Instantaneous Voltage Calculations of a Charging RC Circuit (Calculator TI-35X orTI-36X)

Learners view a sample of the keystrokes from a TI-35X or 36X calculator that are required to solve for the instantaneous voltage of a charging RC circuit.

Oscilloscope AC Voltage Measurements

In this animated learning object, students view the operation of an oscilloscope that is used to measure AC voltages. A brief quiz completes the activity.

Series-Parallel Circuit Analysis Practice Problems: Circuit 2

In this interactive object, learners solve a series-parallel DC circuit analysis problem. Immediate step-by-step feedback is given.

Capacitive Probe Sensors

Learners study the operation of capacitive probe sensors used to measure levels in a tank.

Statics: Law of Transmissibility

By Steve Whitmoyer

Learners examine how a force may be considered to act at any point along its line of action as long as the magnitude and direction of the force remain unchanged. Numerical verification is provided.

Excess Gain of Optical Sensors

In this animated activity, learners examine how to change the gain of an optical sensor to overcome environmental conditions and distance.

Data Compare Instructions

In this animated object, learners examine three data compare instructions used by programmable logic controllers (PLCs). A practical application to show how these instructions are used in an industrial setting is provided.

Two-Wire Sensors

In this animated object, learners examine the signals produced by sourcing and sinking two-wire sensors. A brief quiz completes the activity.

Transistor Fundamentals: E-MOSFETs, the Ohmic Region

The ohmic region of the E-MOSFET is identified. Formulas are given to determine the proper operation in the ohmic region. An example of circuit analysis is also given.

Kirchhoff's Voltage Law (KVL): Practice Problems

By Terry Fleischman, Patrick Hoppe

Learners review Kirchhoff's Voltage Law and work six practice problems. Feedback is given.

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.