Students view the equations used to determine the ac parameters of the transistor circuit.
Op Amp Fundamentals: The Summing Amplifier
By Patrick Hoppe
Students read an explanation of the summing amplifier and the formulas for closed-loop gain. An example is given.
How Metal Detectors Operate
By Terry Bartelt
Learners examine how metal detectors function. This object includes animation and sound.
Transistor Fundamentals: Decibel Gain, Power, and Voltage
Students read about decibel power gain and decibel voltage gain. Examples are given for each.
Transistor Fundamentals: AC Coupling Capacitors
Students view the design and function of an ac model for a transistor circuit.
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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