Inductive Reactance Demonstration 1
By Terry Bartelt
Learners view video clips showing how coiled wire provides more resistance to AC current flow than uncoiled wire.
The Reflected Load in a Transformer (Screencast)
Learners examine how the load resistance connected to the secondary coil of a transformer affects the primary current. A brief quiz completes the activity.
Op Amps 6: Circuit Resistance for the Inverting Amplifier
By Todd Van De Hey
The learner will calculate input and output circuit resistance for the Inverting Op-Amp configuration.
RC Time Constant
By Tim Tewalt, Patrick Hoppe
In this animated object, learners observe the voltage on a capacitor at various time constants when it either charges or discharges. Students then answer questions in the categories of Identify, Compare, and Compute.
Op Amps 5: Non-Inverting Amplifier Circuit Resistance
The learner will calculate basic circuit resistance.
Energizing Time Constants of an RL Circuit
In this animated object, students view an explanation of how current, voltage, and the magnetic field strength of a series RL circuit change during five time constants. A brief quiz completes the activity.
Voltages Across Series and Parallel Capacitive Circuits (Screencast)
In this interactive and animated object, learners examine how dc voltages develop across capacitors that are connected in series and in parallel.
Capacitive Reactance Practice Problems
By Patrick Hoppe
Students solve problems on the determination of total capacitive reactance of series-parallel capacitors.
Inductive Reactance Practice Problems
Students solve problems on the determination of total inductive reactance of series-parallel inductors.
Sine Wave Fundamentals: Practice Problem #9
In this interactive object, learners determine the Vp, Vp-p, Vrms, Vavg, and the frequency of a sine wave that is displayed on an oscilloscope screen.
Parallel LC Circuit Tic-Tac-Toe 2
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 is increased above resonance.
Op Amps 4: The Op Amp Buffer
Understand the op-amp buffer configuration and calculate basic circuit impedance.
Sine Wave Fundamentals: Practice Problem #6
Discharging Time Constants of an RC Circuit (Screencast)
In this animated object, learners examine how current, voltage and the discharging capacitor of a series RC changes during 5 time constants. A brief quiz completes the activity.
Rotating Vector Representation of the Sine Function
The learner will be able to represent steady-state AC sinusoidal signals using phasors, which will lead to a simplified technique of analyzing AC circuits in a very similar way that we analyze DC circuits.
Sine Wave Fundamentals: Practice Problem #10
Sine Wave Fundamentals: Practice Problem #7
Op Amps 2: The Non-Inverting Amplifier
The learner will describe the non-inverting op-amp configuration and calculate the circuit gain.
AC Voltage Conversions (Screencast)
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.
Sine Wave Fundamentals: Practice Problem #5
Series RLC Circuit Tic-Tac-Toe 2
By playing a game of tic-tac-toe, a student can review what happens to currents and voltages throughout a series RLC circuit when the applied frequency is increased above resonance.
Transformer Practice Problems
Students solve practice problems on voltage, current, and impedance matching. Examples precede the problems.
Sine Wave Fundamentals: Practice Problem #8
Op Amps 3: The Inverting Amplifier
Describe the inverting op-amp configuration and calculate the circuit gain.
Sine Wave Fundamentals: Practice Problem #4