The Relay
By Terry Bartelt
In this animated lesson, students view the operation of an electromechanical relay. A brief quiz concludes the activity.
The MOD Number
By Patrick Hoppe
Learners read how to calculate the MOD number and how it is used.
The Thevenin Theorem
This animated object allows students to examine the four steps used to reduce a complex circuit to a simple series circuit.
Transfer Functions: The RC High Pass Filter
Learners read how the transfer function for a RC 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.
An Algorithm for Converting a Decimal Number to a Hexadecimal Number
By Kevin Ritzman
In this animated activity, learners examine a systematic method for converting a decimal number (base 10) into a hexadecimal number (base 16).
Transistor DC Analysis Practice Problems: Circuit #1
Learners analyze a base-biased npn transistor circuit. A "help" screen is available.
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.
The 555 Monostable Multivibrator
Learners examine a 555 integrated circuit, which functions as a one-shot monostable multivibrator, and then test their knowledge. Immediate feedback is provided. Animations are used to show the sequential operations.
An Algorithm for Converting a Hexadecimal Number to a Decimal Number
In this animated and interactive object, learners follow two methods for converting a hexadecimal number to a decimal number. They test their knowledge in exercises at the end of the learning object.
Current Divider Rule (CDR)
Students review the Current Divider Rule (CDR) and work practice problems.
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.
Selecting a Proper Single Phase Transformer
By Gary Lindell, Terry Bartelt
Students follow the steps that are required to select a transformer with the proper ratings. Voltage, frequency, current, and KVA are considered.
The Transfer Functions: RC Low-Pass Filter with a Bode Plot
Students read how the transfer function is developed for an RC low-pass filter. A straight line Bode plot is drawn through close approximations.
The DC Shunt Motor
Learners examine the operation of a DC Shunt motor and its characteristics. A quiz completes the activity.
Vector Diagram for a Parallel RC Circuit
Learners read about the vector diagram for a parallel RC circuit. This animated lesson presents information on current flow through each branch, total current, and phase angle.
Transformers
Students read an introduction to transformers that includes schematic symbols, turns ratios, mutual inductance, and the coefficient of coupling.
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.
Series RC Circuit Practice Problems
By James Bourassa, John Rosz
In this interactive object, students calculate capacitive reactance, phase angle, impedance, and power in series RC circuits.
Serial-In Serial-Out Shift Register
In this animated activity, students view the operation of a 4-bit serial-in serial-out register. A brief quiz completes the learning object.
Series-Parallel Circuit Analysis Practice Problems: Circuit #5
Learners examine a series-parallel circuit and solve 14 problems related to voltage, current, and power. A help screen is provided.
Transistor Fundamentals: Emitter-Biased NPN Transistor
Students view a dc analysis of an emitter-biased NPN transistor.
Transistor Fundamentals: Voltage-Divider Biased NPN Transistor
Students view drawings of the dc analysis of a voltage-divider biased NPN transistor.
Series RLC Circuit Tic-Tac-Toe 1
By playing a game of tic-tac-toe, a student can review what happens to currents and voltages throughout a series RLC circuit when the applied frequency is increased from 0 Hz towards resonance.
Instantaneous Current Calculations of an Energizing RL Circuit (Using a TI-36X Calculator)
Learners view a sample of the keystrokes on a TI-36X calculator that are required to solve for the instantaneous current of an energizing RL circuit.
Power Dissipation
Students look at the power dissipated by a single gate and by an IC. The concept of average current draw is introduced and examples are provided.