Explain the operation of this “H-bridge” motor control circuit: At…
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Suppose a 12 volt lead-acid battery has an internal resistance of 20…
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Identify some different ways you can create the sine-wave audio tracks…
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A transmission line of infinite length is an interesting abstraction,…
Textbook
Because batteries create current flow in a circuit by exchanging…
Textbook
Reactive Power We know that reactive loads such as inductors and…
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Don’t just sit there! Build something!! Learning to mathematically…
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In this hands-on semiconductor electronics experiment, build a full-wave rectifier for AC to DC conversion and learn about center-tapped transformers.
Textbook
If you’ve ever witnessed a lightning storm, you’ve seen…
Textbook
In this hands-on semiconductor electronics experiment, build a voltage follower amplifier using a bipolar junction transistor (BJT) in common-collector configuration and learn about circuit ground and impedance transformations.
Textbook
JFETs, like bipolar transistors, are able to “throttle”…
Textbook
Don’t just sit there! Build something!! Learning to mathematically…
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Given two lengths of metal wire, which one will have the least…
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Calculate the voltage output by the secondary winding of a transformer…
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Design a passive circuit that will create a "split” ( V/-V) power…
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There are three major kinds of power supplies: unregulated (also…
Textbook
To overcome the challenge of creating necessary DC bias voltage for an…
Textbook
Don’t just sit there! Build something!! Learning to mathematically…
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Don’t just sit there! Build something!! Learning to mathematically…
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By definition, a low-pass filter is a circuit offering easy passage to…
Textbook
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AC Motors Perhaps the most important benefit of polyphase AC power…
Textbook
Don’t just sit there! Build something!! Learning to mathematically…
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Wire-by-Number project: simple voltage divider Description: Build a…
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Don’t just sit there! Build something!! Learning to mathematically…
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This page will walk you step-by-step through the process of…
Textbook
In ladder logic symbolism, an electromechanical relay coil is shown as…
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Explain how a moving-coil, or dynamic microphone works. Identify how…
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Protective relays are special power-sensing devices whose job it is to…
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Up to this point we have considered logic reduction problems where…
Textbook
A common phrase heard in reference to electrical safety goes something…
Textbook
Varicap or varactor diodes A variable capacitance diode is known as a…
Textbook
Because batteries create current flow in a circuit by exchanging…
Textbook
In this collection of hands-on electronics experiments, build and test digital circuits and learn the fundamentals of digital logic circuits, including gates, counters, logic levels, hysteresis, memory, and more.
Textbook
What does the normal status of an electrical switch refer to?…
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What is Attenuators? Attenuators are passive devices. It is…
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Don’t just sit there! Build something!! Learning to mathematically…
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Impedance Matching Because transformers can step voltage and current…
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If the ends of a wire loop are attached to two half-circular metal…
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Determine if the light bulb will de-energize for each of the following…
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The variable reluctance motor is based on the principle that an…
Textbook
In the common-emitter section of this chapter, we saw a SPICE analysis…
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These are the most common types of resistors available. Resistors…
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What is the difference between a JMP (“jump”) instruction and a…
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In this series of hands-on electronics experiments, build alternating current (AC) circuits and learn about basic electrical engineering circuit concepts, including transformers, motors, phase shifts, signal coupling, and noise cancellation.
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In this hands-on AC electronics experiment, build a large AC permanent capacitor split-phase induction motor and learn the principles of AC induction motor function.
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In this hands-on AC electronics experiment, use a PC-based oscilloscope program to observe waveforms from a musical keyboard and learn basic oscilloscope operation.
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This calculator will help compute the inductance of a length of wire.
Tools
Stepper Motor vs Servo Motor A stepper motor is a…
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This calculator computes for the capacitor charge time and energy, given the supply voltage and the added series resistance.
Tools
Wiring Color Codes Infographic. Released under the Creative Commons…
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Shockley Diodes and Silicon Controlled Rectifiers (SCRs) Shockley…
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The Parallel Wires of Infinite Length Suppose, though, that we had a…
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Quantum physics describes the states of electrons in an atom according…
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As an instructor of electronics, I am called upon frequently to help…
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So far we have been finding Sum-Of-Product (SOP) solutions to logic…
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Most of us have experienced some form of electric “shock,”…
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The earliest forms of digital data storage involving moving parts was…
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Input impedance varies considerably with the circuit configuration…
Textbook
We have the symbols for depletion mode and enhancement mode MOSFETs -…
Textbook
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