By Terry Bartelt
Learners read an explanation of the concept of apparent power in a power distribution system involving motors, generators, and transformers. A quiz completes this interactive lesson.
Students view a graphical explanation of how the motor condition (unloaded, 50 percent loaded, fully loaded) affects the phase between voltage and current, the current draw from the AC supply, the amount of power consumed, and the power factor.
Analog Voltmeter Operation
Students follow the procedure to measure voltage with an analog voltmeter. They examine the use of the Function Switch and the Range Switch. A brief quiz completes the activity.
Maximum Power Transfer
By Patrick Hoppe
Learners are introduced to the maximum power transfer theorem. Examples show the load as it varies and the results are graphed.
The 555 Astable Multivibrator
Learners observe the animated operation of an astable mulivibrator using a 555 IC (integrated circuit) chip and external components.
Series RL Circuit Vector and Circuit Analyzer
By James Bourassa, John Rosz
Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.
A Sample DC/AC I Exam
Students complete a sample exam for DC/AC I. It provides an overview of the material presented in the course.
Noninverting Op Amp
In this animated object, learners examine the fundamental operation of a noninverting operational amplifier. A brief quiz completes the activity.
Learners are introduced to primary and secondary batteries. Examples are given.
Operation of Full-Wave Bridge Rectifier
By Matthew Treu
In this learning activity you'll explore the operation of a full-wave bridge rectifier circuit.
Current Divider Rule (CDR)
Students review the Current Divider Rule (CDR) and work practice problems.
The Basic Operation of a Diode
In this interactive and animated object, learners examine the operation of a semiconductor diode when it is forward and reverse biased. A brief quiz completes the activity.
The Zener Diode: Practice Problems
Students complete 10 practice problems. These deal with the determination of series current, zener current, and load current, and if the zener diode is operating in the breakdown region.
Op Amps 2: The Non-Inverting Amplifier
By Todd Van De Hey
The learner will describe the non-inverting op-amp configuration and calculate the circuit gain.
Rotating Vector Representation of the Sine Function
The learner will be able to represent steady-state AC sinusoidal signals using phase vectors, which will lead to a simplified technique of analyzing AC circuits in a very similar way that we analyze DC circuits.
Ohm's Law Practice Problems #3
Learners review Ohm's Law and then work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and are asked to solve for the third.
Interpreting the Resistor Color Code
Students examine how to interpret resistor color code bands to determine resistance values and tolerance ranges. This interactive learning object has audio content and includes exercises.
Current Divider Rule Practice Problems
In this interactive object, learners review the CDR and work nine problems. Immediate feedback is given.
Clock Pulse Triggering of Flip-Flops
This learning object shows the symbols used to represent the type of pulse required at the clock input to activate flip-flops.
In this animated object, learners examine the operation of a demultiplexer along with the data output and select lines. A brief quiz completes the activity.
Pulse Train Fundamentals: Practice Problem #1
In this interactive object, learners determine the pulse width, period, duty cycle, and frequency of a waveform.
Ignition System of a Combustion Engine
Students view the parts and movements of a combustion engine in this animated activity. Each part is described.
Logic State Indicators
Instructions on how to interpret state indicator symbols for input and output terminals of digital devices is presented.
Boolean Theorems (Single Variable)
Students analyze the eight single variable Boolean theorems and their expressions.
Average Voltages of Pulsating DC Voltages
In this learning activity, learners will learn to calculate the average voltage produced by half-wave and full-wave rectifiers.