Troubleshooting a Faulty JK Flip-Flop
By Terry Bartelt
In this animated object, learners examine the recommended procedure for troubleshooting a defective JK flip-flop using a logic pulser and probe.
Complex Numbers: So What's All the Fuss About?
By Patrick Hoppe
Learners explore the use of complex numbers through a series AC circuit analysis problem. The steps are compared to the graphical method of finding circuit impedance and the phase angle.
By Terry Fleischman
In this learning activity you'll read the procedures for using the vertical function of an oscilloscope and view illustrations of waveforms.
Current Source Approximations
Learners examine first and second approximations and view examples of a "stiff" current source.
Voltage Waveforms in an Edison Three-Wire System
Learners view the waveforms and voltages of an Edison Three-Wire System and read a description of the polarities across the secondary of the center-tap transformer. This transformer supplies power to residential homes.
Logic State Indicators
Instructions on how to interpret state indicator symbols for input and output terminals of digital devices is presented.
The Digital Logic Probe
Students view the layout and operation of a digital logic probe.
The Mathematical Expression of an AC Sine Wave As a Function of Time: Practice Problems
Students view the mathematical expression of a sinusoidal waveform with respect to time (t) and solve five problems. The answers are provided so students may check their work.
The Ideal Bode Plot
The Ideal Bode plot is introduced. The three main topics covered are: corner frequencies, midband voltage gain, and the roll-off rate.
Inductive Reactance Demonstration 2
In this animated object, learners examine how a coil of wire provides more resistance to AC current flow than an uncoiled wire. This learning object contains audio.
ElectroMagnetic Radio Waves
In this animated object, learners examine how magnetic waves are transmitted as radio signals.
Instantaneous Voltage Calculations of a Charging RC Circuit (Calculator TI-30XIIS)
Students view the keystrokes of a TI-30XIIS calculator that are required to solve for the instantaneous voltage of a charging RC circuit.
The Three-Way Switching Circuit
In this animated object, learners examine the mechanical configuration of a three-way switch and how it operates in a circuit. They also view diagrams showing the use of an ohmmeter to determine the electrical connections.
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.
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.
Students read about the concept of true power and view examples of how it is dissipated as heat is provided.
Transistor Fundamentals: AC Models
Students read about the four steps to creating an ac model and view examples.
Tracing Logic Circuit Signals
Learners follow steps to trace logic signals from the inputs of several interconnecting logic gates to one output.
The Function Generator: Voltage Control
Learners read a description of the knob controls, pushbuttons and output terminals on the Wavetek Model 25 signal generator.
Instantaneous Voltage Calculations of a Charging RC Circuit (Calculator TI-35X orTI-36X)
Learners view a sample of the keystrokes from a TI-35X or 36X calculator that are required to solve for the instantaneous voltage of a charging RC circuit.
Power Factor Correction
Students read an explanation of power factor correction. Examples of both inductive and capacitive loads are given.
Capacitor/Inductor: An Auto Analogy
By Roger Brown
Learners compare the experience of driving an auto to the circuit responses of RL (resistance/inductance) circuits and RC (resistance/capacitance) circuits. Acceleration, position, speed, and torque are graphed.
The Universal NOR Gate
Learners read how the NOR gate can be configured to obtain the other common logic gates. Schematics and Boolean expressions demonstrate how the AND, OR, and Hex Inverter functions are achieved through the use of only NOR gates
In this learning activity you'll describe the operation of a logic inverter using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.
Parallel RL Circuit Practice Problems
By James Bourassa, John Rosz
In this interactive object, students calculate inductive reactance, impedance, current, and power in parallel RL circuits.