An Algorithm for Converting a Hexadecimal Number to a Decimal Number
By Kevin Ritzman
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.
Transformer Loading
By Terry Bartelt
In this animated activity, learners see that changing the resistance value of the load in the secondary of a transformer causes current to vary in the primary.
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.
Basic Logic Gates
By Terry Bartelt, Terry Fleischman
The learner will understand the operation of the six fundamental logic gates and the inverter by using truth tables, Boolean Algebra equations, switch analogies, and written statements.
Parallel Resistance Practice Problems
By Patrick Hoppe
Students work practice problems in which the total resistance of the circuit is calculated. Feedback is provided.
Comparing Analog and Digital Signals
Learners compare animations of analog and digital data signals. A short quiz completes the activity.
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.
Ideal Filters
Students read about the ideal versions of the four common filters (low-pass, high-pass, bandpass, and notch), and view graphical representations of the filters' frequency characteristics.
Inductance
This learning activity describes the physical properties that affect the inductance, in henries, of an inductor.
Half-Wave Rectifier
This primer introduces the student to the half-wave rectifier. Both the 1st and 2nd approximations are examined.
The TI-83 Plus Calculator: Using the Reciprocal Key
Learners examine the use of the reciprocal key on the TI-83 Plus calculator to determine parallel resistance.
The Zener Diode 2
In this animated object, learners examine the operation of a zener diode in the forward and reverse bias conditions. A quiz completes the activity.
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.
Op Amp Fundamentals: The Inverting Amplifier
The inverting amplifier configuration is presented. The closed loop voltage gain and the closed loop bandwidth formulas are explained, along with the concept of negative feedback.
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.
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.
Superposition Theorem with Complex Numbers
Students read an explanation of "superposition" as a technique for ac circuit analysis. Complex numbers are used.
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.
Variable Resistors
In this animated activity, students read about the two general types of variable resistors: potentiometers and rheostats. They then answer six multiple-choice questions.
Transformers
Students read an introduction to transformers that includes schematic symbols, turns ratios, mutual inductance, and the coefficient of coupling.
The RC Time Constant
Learners examine the concept of the RC time constant. The instantaneous voltage across the capacitor is calculated.
The Semiconductor Diode
In this interactive object, learners examine the PN sections of a diode and the diode's forward- and reverse-biased operations. A brief quiz completes the activity.
Digital Circuit Devices
The two types of digital devices, logic gates and flip-flops, and the types of basic operations they perform are presented.
Waveforms of an SCR Circuit
Learners view waveforms at various locations of an SCR circuit controlling the intensity a light bulb. The waveforms are shown when the light is dim, at medium brightness, and at full brightness. A brief quiz completes the activity.
Automotive Electrical Systems: Ohm's LawPractice Problems #2
By Andrew Rinke, Patrick Hoppe
Learners review Ohm's Law and then work 12 problems to help them apply the law to automotive electrical systems. 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.