Fundamentals of Radio Communication

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

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What Is the Skin Effect?

The Skin Depth of Copper in Electrical Engineering As previously…

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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

BJT Quirks

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

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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

Passive Filter Circuits

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

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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

Other Diode Technologies

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

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Textbook

Principles of Radio

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

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Textbook

Radio Circuits

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

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Textbook

Design Project: Radio Transmitter

Research the FCC (Federal Communication Commission) guidelines on…

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Mixed-Frequency Signals

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

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Worksheets - Software-Defined Radio

Signal Modulation

A modern method of electrical power control involves inserting a…

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Worksheets - Software-Defined Radio

Microstrip Inductance Calculator

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

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Tools

Waveguides

A waveguide is a special form of transmission line consisting of a…

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Textbook

Polar Form and Rectangular Form Notation for Complex Numbers

In order to work with complex numbers without drawing vectors, we…

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Susceptance and Admittance

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

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Active Filters

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

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Worksheets - Software-Defined Radio

Finite-length Transmission Lines

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

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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

Introduction to Digital Communication

In the design of large and complex digital systems, it is often…

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Introduction to Mixed-Frequency AC Signals

In our study of AC circuits thus far, we’ve explored circuits…

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Textbook

Bridged-Tee Attenuator Calculator

This calculator helps you determine the values of the resistors R1 and R2 to be used for a bridged-tee attenuator.

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Tools

Simple Parallel (Tank Circuit) Resonance

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

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Textbook

Parallel Wire Inductance Calculator

This tool is designed to calculate the inductance of two parallel wires

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Tools

Special Transformers and Applications

Impedance Matching Because transformers can step voltage and current…

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Textbook

Mutual Inductance

When an electric current is passed through a coil of wire, what…

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Worksheets - Software-Defined Radio

Bandpass Filter Calculator

This calculates values of the inductance, capacitance of an inductor and capacitor used in a Butterworth LC bandpass filter.

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Tools

What Is the Skin Effect?

The Skin Depth of Copper in Electrical Engineering As previously…

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Textbook

What is a Filter?

It is sometimes desirable to have circuits capable of selectively…

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Textbook

Mixed-Frequency Signals

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

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Worksheets - Software-Defined Radio

Passive Filter Circuits

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

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Worksheets - Software-Defined Radio

Maximum Power Transfer Theorem

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

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Textbook

Electrical Isolation

SPICE analysis of Electrical Isolation Aside from the ability to…

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Textbook

Design Project: DC Motor

The armature windings of your DC motor will have very low resistance.…

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Worksheets - Software-Defined Radio

Ideal Diode Current and Voltage Calculator

This calculator solves for any single missing value in the ideal diode I-V equation for a forward-biased PN-junction diode. Parameters are current, saturation current, voltage, temperature, and ideality factor.

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Tools

Amplifiers

Practical Benefit of Active Devices The practical benefit of active…

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Permanent Magnets

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

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Textbook

Quantum Physics

“I think it is safe to say that no one understands quantum…

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Textbook

Digital Lab - S-R Flip-flop Using NAND Gates

In this hands-on electronics experiment, build an edge-triggered S-R flip-flop, learn the difference between a latch and a flip-flop, and experience how a switch bounce can cause logic errors.

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Textbook

Si Lab - JFET Current Regulator

In this hands-on semiconductor electronics experiment, build a junction field-effect transistor (JFET) current regulator and learn some of the advantages of JFETs over BJTs for current regulation.

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Textbook

Negative Feedback OpAmp Circuits

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

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Practical Considerations - Capacitors

Capacitors, like all electrical components, have limitations that must…

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Scientific Notation and Metric Prefixes

Write the following exponential expressions in expanded form: 101 =…

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An Electric Pendulum

Capacitors store energy in the form of an electric field, and…

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Resonant Filters

So far, the filter designs we’ve concentrated on have employed…

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IGBTs

Because of their insulated gates, IGFETs of all types have extremely…

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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

Motor Control Circuits

The interlock contacts installed in the previous section’s motor…

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Textbook

Millman’s Theorem Revisited

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

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Textbook

BJT Quirks

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

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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

Lorentz Force Calculator

This calculator will determine the combined Lorentz force exerted on a charged particle moving through both an electric field and a magnetic field.

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