Signal Modulation

A modern method of electrical power control involves inserting a…

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Worksheets - Software-Defined Radio

BJT Quirks

An ideal transistor would show 0% distortion in amplifying a signal.…

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Textbook

Passive Filter Circuits

In very simple, qualitative terms, rate the impedance of capacitors…

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Worksheets - Software-Defined Radio

Design Project: Radio Transmitter

Research the FCC (Federal Communication Commission) guidelines on…

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Worksheets - Software-Defined Radio

Mixed-Frequency Signals

What is a harmonic frequency? If an oscillator circuit outputs a…

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Worksheets - Software-Defined Radio

Fundamentals of Radio Communication

What does the acronym RF stand form, in reference to radio-related…

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Worksheets - Software-Defined Radio

Other Diode Technologies

Varicap or varactor diodes A variable capacitance diode is known as a…

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Textbook

Radio Circuits

(a) Crystal radio. (b) Modulated RF at antenna. (c) Rectified RF at…

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Textbook

Principles of Radio

One of the more fascinating applications of electricity is in the…

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Textbook

Phase-Locked Loops

This is a schematic for a simple VCO: The oscillator is of the RC…

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Worksheets - Software-Defined Radio

Special Transformers and Applications

Impedance Matching Because transformers can step voltage and current…

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Textbook

Maximum Power Transfer Theorem

The Maximum Power Transfer Theorem is not so much a means of analysis…

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Textbook

What Is the Skin Effect?

The Skin Depth of Copper in Electrical Engineering As previously…

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Textbook

Inductance, Reactance, and Admittance Calculator

This calculator gives the reactance and admittance of an inductor or the inductance given the reactance of an inductor

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Tools

Noise Figure Calculator

A tool designed to calculate the noise figure of cascaded amplifiers

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Tools

Harmonic Phase Sequences

In the last section, we saw how the 3rd harmonic and all of its…

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Textbook

Simple Parallel (Tank Circuit) Resonance

Resonance in a Tank Circuit A condition of resonance will be…

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Textbook

Harmonics in Polyphase Power Systems

In the chapter on mixed-frequency signals, we explored the concept of…

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Textbook

Microstrip Inductance Calculator

This calculator computes the inductance of a microstrip etched on a PCB.

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Tools

Frequency and Phase Measurement

An important electrical quantity with no equivalent in DC circuits is…

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Textbook

Three-phase Transformer Circuits

Since three-phase is used so often for power distribution systems, it…

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Textbook

Practical considerations - Digital Communication

A principal consideration for industrial control networks, where the…

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Textbook

Questions to Ask Before Proceeding

Has the system ever worked before? If yes, has anything happened to…

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Textbook

Special Transformers and Applications

Impedance Matching Because transformers can step voltage and current…

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Textbook

LC Tank Circuit Resonance Calculator

This calculator computes the resonant frequency of a parallel inductor and capacitor "tank" circuit.

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Tools

Finite-length Transmission Lines

A transmission line of infinite length is an interesting abstraction,…

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Textbook

What is a Filter?

It is sometimes desirable to have circuits capable of selectively…

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Textbook

Susceptance and Admittance

What is Conductance? In the study of DC circuits, the student of…

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Textbook

Active Filters

Don’t just sit there! Build something!! Learning to mathematically…

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Worksheets - Software-Defined Radio

Electric Shock

It is sometimes said regarding electrical safety that, Ït’s not the…

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Worksheets - Software-Defined Radio

Low-pass Filters

By definition, a low-pass filter is a circuit offering easy passage to…

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Textbook

Other Diode Technologies

Varicap or varactor diodes A variable capacitance diode is known as a…

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Textbook

Analog and Digital Signals

Instrumentation is a field of study and work centering on measurement…

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Textbook

Common Derivatives

    RELATED WORKSHEETS: Calculus for Electric Circuits…

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Textbook

Integrated Circuits

  A Logic Gate is assigned as an elementary building block of…

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Textbook

Simple Circuits

Shown here is the schematic symbol for a resistor: What is the purpose…

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Worksheets - Software-Defined Radio

Millman’s Theorem Revisited

You may have wondered where we got that strange equation for the…

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Textbook

Feedback

If some percentage of an amplifier’s output signal is connected…

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Textbook

Reluctance Motor

The variable reluctance motor is based on the principle that an…

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Textbook

Permanent Magnets

Centuries ago, it was discovered that certain types of mineral rock…

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Textbook

Special Diodes

Don’t just sit there! Build something!! Learning to mathematically…

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Worksheets - Software-Defined Radio

Q Factor and Bandwidth of a Resonant Circuit

The Q, or quality, factor of a resonant circuit is a measure of the…

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Textbook

Digital Lab - 10-bit Flashing LED Sequencer

In this hands-on electronics experiment, build and test an automated circuit that sequentially flashes 10 LED, and learn about counters, frequency dividers, and switch debouncing.

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Textbook

Introduction to SPICE

“With Electronics Workbench, you can create circuit schematics…

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Textbook

Other Specialized Motors

Shaded Pole Induction Motor An easy way to provide starting torque to…

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Textbook

Electrical Conduction in Semiconductors

In any electrically conductive substance, what are charge carriers?…

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Worksheets - Software-Defined Radio

Intro Lab - How to Use a Voltmeter to Measure Voltage

In this hands-on introduction to electronics, you will experiment with a multimeter and learn how to measure voltage using the voltmeter function.

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Textbook

Intro Lab - How to Use an Ohmmeter to Measure Resistance

In this hands-on introduction to electronics, you will experiment with a multimeter and learn how to measure resistance using the ohmmeter function.

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Textbook

DC Lab - Current Divider

In this hands-on electronics experiment, you will build resistive current dividers and observe how Ohm's law and Kirchhoff's current law function in real circuits using a voltmeter and an ammeter.

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Textbook

DC Lab - Sensitive Voltage Detector With Audio Output

In this hands-on electronics experiment, you will construct a voltage detector with adjustable sensitivity and audio output, and you will learn a method for detecting small electrical signals without an oscilloscope.

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Textbook

What is a Filter?

It is sometimes desirable to have circuits capable of selectively…

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Textbook

LC Resonant Frequency Calculator

A circuit with an inductor (L) and capacitor (C) connected in parallel or series will have a resonant frequency at which their impedances are equal. Given two of the three values—inductance, capacitance, or resonant frequency—this tool will calculate the missing third variable.

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Tools

Design Project: Sensitive Audio Detector

The choice of step-down transformers to use in a project such as this…

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Worksheets - Software-Defined Radio