Students view the equations used to determine the ac parameters of the transistor circuit.
Transistor AC Analysis Practice Problem: Circuit #5
By Patrick Hoppe
The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.
Parallel LC Circuit Tic-Tac-Toe 1
By Terry Bartelt
By playing a game of tic-tac-toe, a student can review what happens to currents and voltages throughout a parallel LC circuit when the applied frequency increases from 0 Hz toward resonance.
Absolute Optical Encoders
The operation and characteristics of an absolute optical encoder used in automation applications are presented.
Voltage Waveforms in an Edison Three-Wire System
Learners view the waveforms and voltages of an Edison Three-Wire System and read a description of the polarities across the secondary of the center-tap transformer. This transformer supplies power to residential homes.
The Vertical Portion of the Sine Wave
In this animated lesson, learners examine sine waves and alternating current. A brief quiz completes the object.
The Horizontal Portion of the Sine Wave
In this animated object, learners examine cycles, frequency, Hertz, wavelengths, and periods. A brief quiz completes the activity.
AC Voltage Conversion Problems
By John Rosz, Terry Bartelt
Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.
AC Voltage Conversions
In this animated object, learners examine the formulas used to convert peak, RMS, average, and peak-to-peak AC voltages. A brief quiz completes the activity.
AC Current Flow
In this interactive and animated object, learners examine the flow of electron current into and out of hot and neutral sockets during each alternation of an AC waveform. A brief quiz completes the activity.
Models in Education
Three different models in education
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