Ground Fault Circuit Interrupters
By Terry Bartelt
In this animated activity, learners examine how ground fault circuit interrupters work and why they are an important safety feature.
Selecting a Proper Single Phase Transformer
By Gary Lindell, Terry Bartelt
Students follow the steps that are required to select a transformer with the proper ratings. Voltage, frequency, current, and KVA are considered.
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.
The Broadband Telco Services Subscriber Loop
Walk through the subscriber loop and learn how the signal travels from the central office to the subscriber.
By Terry Bartelt, Pat Jensen
In this learning module, you'll explore what electrical grounding is, how it works, and some real-world applications.
In this learning activity, we’ll explore the impact of electric shock on the human body.
Treating Electrical Shock Victims
Explore the step-by-step procedures to rescue and care for electrical shock victims.
The 7493 IC Binary Counter (Video)
In this screencast, learners examine the construction of a 7493 IC as mod-2 and mod-8 up-counters. They view how this binary counter can be modified to operate at different modulus counts.
Three Phase Wye Transformer Calculations
In this interactive object, learners follow steps to find phase voltages in a partial three-phase power distribution circuit.