Kirchhoff's Voltage Law
By Patrick Hoppe
Students read a definition of Kirchhoff's Voltage Law and view examples of its use.
Parallel Resistance Practice Problems
Students work practice problems in which the total resistance of the circuit is calculated. Feedback is provided.
Transformer Ratios
By Terry Bartelt
Students read descriptions of the voltage, current, and turns ratios of the primary and secondary coils for a transformer in this interactive lesson.
Half-Wave Rectifier
This primer introduces the student to the half-wave rectifier. Both the 1st and 2nd approximations are examined.
Op Amp Fundamentals: The Transconductance Amplifier
Students read an introduction to the transconductance amplifier. They also view formulas for voltage-to-current conversion, closed-loop input, and output impedance. An example of how R1 controls the conversion factor is given.
Series-Parallel Circuit Analysis Practice Problems: Circuit 9
Learners examine a series-parallel circuit and solve 14 problems related to voltage, current and power. A help screen is provided.
Assembling a Circuit from a Schematic Diagram
In this animated object, students examine the steps for wiring an electrical circuit from reading a schematic diagram.
An Inductor Opposing a Current Change
Learners read how an inductor opposes a current change when it begins to energize and when it begins to de-energize. A short quiz completes the activity.
Superposition Theorem with Complex Numbers
Students read an explanation of "superposition" as a technique for ac circuit analysis. Complex numbers are used.
The RC Time Constant
Learners examine the concept of the RC time constant. The instantaneous voltage across the capacitor is calculated.
The Transistor Switch
The learner views the operation of a transistor switching from saturation to cutoff. A brief quiz completes the activity.
The DC Motor
Learners examine the wiring of the primary components of the three types of DC motors, series, shunt, and compound. The operational characteristics of each type of motor are described. A quiz completes the activity.
The Silicon Controlled Rectifier
In this animated activity, learners examine the operation of the SCR, including how it is biased and how it is turned off. A brief quiz completes the object.
The Inductive Kick of an Inductor
In this animated activity, learners study the principle behind an inductor producing a high momentary voltage while its magnetic field collapses. A short quiz concludes the lesson.
The MOD Number
Learners read how to calculate the MOD number and how it is used.
Resistor Color Code Recognition Drills
By James Bourassa, John Rosz
In this interactive object, students complete progressively more difficult exercises as a way to improve their ability to recognize resistor color code values.
Transistor Fundamentals: AC Coupling Capacitors
Students view the design and function of an ac model for a transistor circuit.
Power Law Practice Problems #1
Learners review the three formulas for power and work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and asked to solve for power. Immediate feedback is provided.
Pulse Train Fundamentals
Learners examine the fundamentals of a pulse train. Concepts such as time on, time off, duty cycle, period, and frequency are covered.
Impedance: Series to Parallel Conversion
Students view the formulas to be used to convert a series impedance to a parallel impedance.
Maximum Power Transfer
Learners are introduced to the maximum power transfer theorem. Examples show the load as it varies and the results are graphed.
The Voltage Divider Rule with Complex Numbers
Students read an explanation of the Voltage Divider Rule with complex numbers. Examples are given.
Inductance
This learning activity describes the physical properties that affect the inductance, in henries, of an inductor.
Digital Circuit Devices
The two types of digital devices, logic gates and flip-flops, and the types of basic operations they perform are presented.
Difference Op Amp
Learners examine the fundamental operation of a difference operational amplifier. A brief quiz completes the activity.