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.

Electromagnets

By Terry Bartelt

Learners examine how an electromagnet is formed. Animated illustrations show current running through a coil wrapped around an iron core.

Noninverting Op Amp

In this animated object, learners examine the fundamental operation of a noninverting operational amplifier. A brief quiz completes the activity.

RL Time Constant

By Patrick Hoppe

Learners read an explanation of the RL time constant and examine the formula for calculating the instantaneous current value. The current is graphed as it climbs to maximum or drops to zero. Note* In the formulas in this module, the Greek letter epsilon should be the mathematical constant 'e'.

Parallel Capacitance: Practice Problems

Learners solve six problems determining the total capacitance of a parallel circuit. Immediate feedback is provided.

Series Capacitance

Students view the steps for determining the total capacitance for a series circuit. They then work practice problems.

Voltage Divider Rule Practice Problems

Learners review the VDR and work six problems. Immediate feedback is given.

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.

Resistor Color Code Practice

In this learning activity you'll build a resistor's color code based on the bands.

Resistor Color Code Description

In this interactive activity, students read about the colored stripes on a resistor and interpret the placement of those colors to determine the value of four-band resistors.

Exclusive-NOR Gate (Screencast)

In this learning activity you'll review the operation of an Exclusive-NOR gate by using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

Inductive Reactance Demonstration 1

Learners view video clips showing how coiled wire provides more resistance to AC current flow than uncoiled wire.

Series-Opposing Zener Diodes

In this animated and interactive object, learners examine the voltages that develop across two series zener diodes, which are connected in opposite directions, when DC and AC voltages are applied across them. A brief quiz completes the activity.

Transfer Functions: The RL High Pass Filter (Screencast)

Learners read how the RL 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.

Series Inductance

In this learning activity you'll calculate the total inductance of a series circuit.

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.

Inductive Reactance Practice Problems

Students solve problems on the determination of total inductive reactance of series-parallel inductors.

Inductor Series - Parallel: Practice Problems

Students complete 10 practice problems.

Inductors in Parallel

Learners examine the process for determining the total inductance of a parallel circuit. They then complete practice problems.

Capacitive Reactance Practice Problems

Students solve problems on the determination of total capacitive reactance of series-parallel capacitors.