Total Resistance in a Parallel Circuit
By Terry Bartelt
The learner will apply the three formulas used to find the total resistance of three types of parallel resistor circuit configurations.
Digital Circuit Devices
The two types of digital devices, logic gates and flip-flops, and the types of basic operations they perform are presented.
Series-Opposing Zener Diodes
In this animated and interactive object, learners examine the voltages that develop across two series zener diodes, which are connected in opposite directions, when DC and AC voltages are applied across them. A brief quiz completes the activity.
Parallel RC 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.
Voltage Divider Rule (VDR)
By Terry Fleischman, Patrick Hoppe
Students review the Voltage Divider Rule and work practice problems.
Parallel RL Circuit Practice Problems
In this interactive object, students calculate inductive reactance, impedance, current, and power in parallel RL circuits.
The Optocoupler
In this animated object, learners examine the operation of an optocoupler, specifically how it is connected to external components to provide interfacing and isolation and how it responds to excessive frequencies. A quiz completes the activity.
Voltage and Current Amplitudes in a Series RLC Circuit
Learners examine how voltages and currents vary in a series RLC circuit as the applied frequency changes.
Op Amp Fundamentals: The Transresistance Amplifier
By Patrick Hoppe
The current-to-voltage conversion of the transresistance amplifier is examined. The formulas for output voltage and impedance are defined and an example ties the concepts together.
Volts Per Hertz Ratio
In this animated and interactive object, learners examine why the voltage produced by an AC drive must be increased when its frequency is increased due to inductive reactance.
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.
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.
The Duty Cycle of a Multivibrator
In this interactive and animated object, learners examine the duty cycle of a squarewave produced by a multivibrator using a 555 IC (integrated circuit). A brief quiz completes the activity.
The Magnetic Circuit
Learners compare electromagnetic quantities with the voltage, current, and resistance quantities of an electrical circuit. A brief quiz completes the object.
Synchronous & Asynchronous Inputs on a JK Flip-Flop
Students examine the operation of synchronous and asynchronous inputs on a JK Flip-Flop.
The Neutral Current of an Edison Wire System
Learners take a close look at the Edison Wire System and observe how the current values through the two lines and the neutral of the system change as the loads vary.
Hexadecimal Numbering System
In this learning activity you'll review the hexadecimal numbering system.
The Speed-Power Product
Learners examine how to multiply the gate propagation delay by the gate power dissipation to find the speed-power product. Examples are shown.
Voltage Drops in a Series Circuit
Students study the concept that the voltage drop across a series circuit resistor is proportional to its resistance. They then complete a brief quiz.
Series-Parallel Circuit Analysis Practice Problems: Circuit 2
In this interactive object, learners solve a series-parallel DC circuit analysis problem. Immediate step-by-step feedback is given.
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.
Boolean Theorems (Single Variable)
Students analyze the eight single variable Boolean theorems and their expressions.
Voltage Sources in Series
In this learning activity you'll explore the effect of connecting voltage sources in series to increase voltage applied to a load.
Parallel Circuit Analysis Practice Problems Part 1
In this interactive object, students work parallel circuit analysis problems. They solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated.
The Generation of Alternating Current
This learning object describes the production of an alternating current in a generator with a single-loop armature. An illustration of how a sine wave is produced is shown through animation.