Voltage Divider Rule Practice Problems

By Patrick Hoppe

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

Op Amp Fundamentals: The Non-Inverting Amplifier

Students are introduced to the non-inverting amplifier configuration. The formulas for closed loop gain and bandwidth are shown, and an example is given.

Current and Voltage Parameters of Digital Circuitry

In this interactive learning object, students read about the voltage and current parameters commonly found on a data sheet. A brief quiz completes the activity.

Graphical BJT/JFET Transistor Biasing

By Roger Brown

Learners use two calculations to prepare a graphical solution to the biasing of bipolar junction transistors and junction field effect transistors. This method eliminates the problem of having to re-calculate the operational Q point when dealing with hard saturation.

Electromagnets

By Terry Bartelt

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

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.

Ohm's Law Practice Problems #1

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.

Sine Wave Fundamentals: Practice Problem #1

In this interactive object, learners determine the Vp, Vp-p, Vrms, Vavg, and the frequency of a sine wave displayed on an oscilloscope screen.

Series-Parallel Circuit Analysis Practice Problems: Circuit 10

Learners examine a series-parallel circuit and solve 14 problems related to voltage, current, and power. A help screen is provided.

The Function Generator: Frequency Control

Learners read how to use the knobs and the output terminals of a Wavetek Model 25 function generator to obtain a waveform at a desired frequency.

Total Impedance of a Series Circuit Using Complex Numbers

Students view several examples of how to determine the total impedance of a series circuit. The "j" term is used in all of the calculations.

Exclusive-OR Gates

In this learning activity you'll explore how an Exclusive-OR gate operates by using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

Designing a Ladder Diagram

By Terry Bartelt, Terry Fleischman

In this animated object, learners examine the design of a ladder circuit that provides manual control to a water pumping system. Students also study modifications to the circuit as the complexity of the system increases.

Fundamentals of a DC Motor

Learners study the interaction between the conductors of the stator and the armature inside a DC motor, which causes the shaft to rotate. A short quiz completes the activity.

Transformer Action Demonstration

Learners view animations and video clips showing how power is transmitted from one energized coil to another.

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.

Power Law Practice Problems #5

Wattmeters

Learners examine the function of the analog wattmeter to measure true power, how it is connected in a circuit, and how the internal components develop a measurement. A brief quiz completes the activity.

Pulse Train Fundamentals: Practice Problem #2

In this interactive object, learners determine the pulse width, period, duty cycle, and frequency of a waveform.

Pulse Train Fundamentals: Practice Problem #5

The TI-83 Plus Calculator: Using the Reciprocal Function for Complex Numbers

Learners examine the correct method for calculating complex reciprocals. The solution for total impedance of a parallel circuit in rectangular form is shown.

Transfer Functions: The RL High Pass Filter

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.

Transfer Functions: The RL Low Pass Filter

Learners read how the transfer function for a RC low 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.

Transformers

Students read an introduction to transformers that includes schematic symbols, turns ratios, mutual inductance, and the coefficient of coupling.

Power Calculations in a Series/Parallel Circuit

In this learning activity you'll explore various ways to calculate the power consumed in a series/parallel circuit.