All About Circuits

Latest Wireless/RF Education

Categories

Active Filters

Active Filters

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


Worksheets - Wireless/RF

Resonant Filters

Resonant Filters

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


Textbook

Susceptance and Admittance

Susceptance and Admittance

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


Textbook

Finite-length Transmission Lines

Finite-length Transmission Lines

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


Textbook

AC Waveforms

AC Waveforms

When an alternator produces AC voltage, the voltage switches polarity…


Textbook

Bridged-Tee Attenuator Calculator

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.


Tools

Data Flow

Data Flow

Buses and networks are designed to allow communication to occur…


Textbook

High-pass Filters

High-pass Filters

A high-pass filter’s task is just the opposite of a low-pass…


Textbook

N-Way Power Divider Calculator

N-Way Power Divider Calculator

This calculator determines the total path loss provided by an RF n-way power splitter.


Tools

VSWR / Return Loss Calculator

VSWR / Return Loss Calculator

A calculator designed to compute the VSWR, reflection coefficient, return loss and matching loss in a transmission line


Tools

Parallel Wire Inductance Calculator

Parallel Wire Inductance Calculator

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


Tools

BJT Quirks

BJT Quirks

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


Textbook

Decibels

Decibels

The Bel is Used to Represent Gain In its simplest form, an…


Textbook

LC Tank Circuit Resonance Calculator

LC Tank Circuit Resonance Calculator

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


Tools

Optical Data Communication

Optical Data Communication

A modern alternative to sending (binary) digital information via…


Textbook

Impedance Transformation

Impedance Transformation

Standing waves at the resonant frequency points of an open- or…


Textbook

Absolute dB scales

Absolute dB scales

Decibel as Absolute Unit of Power It is also possible to use the…


Textbook

Q Factor and Bandwidth of a Resonant Circuit

Q Factor and Bandwidth of a Resonant Circuit

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


Textbook

What Is the Skin Effect?

What Is the Skin Effect?

The Skin Depth of Copper in Electrical Engineering As previously…


Textbook

Electrical Noise and Interference

Electrical Noise and Interference

Define what noise means, in the electrical sense of the word. How does…


Worksheets - Wireless/RF

Inductor Voltage and Current Relationship

Inductor Voltage and Current Relationship

Inductors do not have a stable “resistance” as conductors…


Textbook

Vol IV. Credits

Vol IV. Credits

All entries arranged in alphabetical order of surname. Major…


Textbook

Power Density Calculator

Power Density Calculator

A tool designed to calculate the power density of an antenna


Tools

DC Lab - Precision Potentiometer

DC Lab - Precision Potentiometer

In this hands-on electronics experiment, you will build a precision potentiometer from three lower precision potentiometer and learn about voltage range compression and parameter interactions.


Textbook

Wattmeter Design

Wattmeter Design

Power in an electric circuit is the product (multiplication) of…


Textbook

Inductor Commutating Circuits

Inductor Commutating Circuits

A popular use of diodes is for the mitigation of inductive…


Textbook

Inverting and Noninverting OpAmp Voltage Amplifier Circuits

Inverting and Noninverting OpAmp Voltage Amplifier Circuits

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


Worksheets - Wireless/RF

Operational Amplifier Models

Operational Amplifier Models

While mention of operational amplifiers typically provokes visions of…


Textbook

Decibels

Decibels

The Bel is Used to Represent Gain In its simplest form, an…


Textbook

Voltage/Current Converter OpAmp Circuits

Voltage/Current Converter OpAmp Circuits

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


Worksheets - Wireless/RF

Power in Resistive and Reactive AC circuits

Power in Resistive and Reactive AC circuits

Consider a circuit for a single-phase AC power system, where a 120…


Textbook

Performance-Based Assessments for Network Analysis Competencies

Performance-Based Assessments for Network Analysis Competencies


Worksheets - Wireless/RF

Pi-Match Impedance Matching Calculator

Pi-Match Impedance Matching Calculator

This calculator is designed to compute the parameters required to design a Pi-Match Impedance Circuit


Tools

Microprocessor Programming

Microprocessor Programming

The “vocabulary” of instructions which any particular…


Textbook

Autotransformers

Autotransformers

How much voltage is there between the following pairs of points in…


Worksheets - Wireless/RF

Series and Parallel Capacitors

Series and Parallel Capacitors

When capacitors are connected in series, the total capacitance is…


Textbook

TTL NAND and AND gates

TTL NAND and AND gates

Suppose we altered our basic open-collector inverter circuit, adding a…


Textbook

Important Constants

Important Constants

Euler’s Number Euler’s constant is an important value for…


Textbook

Logarithms for Analog Circuits

Logarithms for Analog Circuits

The concept of a mathematical power is familiar to most students of…


Worksheets - Wireless/RF

Why digital?

Why digital?

Although many textbooks provide good introductions to digital memory…


Textbook

Power Quality Measurement

Power Quality Measurement

It used to be with large AC power systems that “power…


Textbook

Voltage, Current, and Resistance

Voltage, Current, and Resistance

Voltage is commonly defined as “electrical pressure.” The unit of…


Worksheets - Wireless/RF

Amplifiers

Amplifiers

Practical Benefit of Active Devices The practical benefit of active…


Textbook

Introduction to Complex Numbers

Introduction to Complex Numbers

If I needed to describe the distance between two cities, I could…


Textbook

Derivatives of Power Functions of e

Derivatives of Power Functions of e

Example Derivatives of e Proportionality Constant When we say that a…


Textbook

Wavelength (TEM) Calculator

Wavelength (TEM) Calculator

This calculator determines the wavelength of a signal given the frequency and dielectric constant.


Tools

Contributors (11)

Contributors (11)

Contributors to this chapter are listed in chronological order of…


Textbook

Microprocessor Programming

Microprocessor Programming

The “vocabulary” of instructions which any particular…


Textbook

Specific Troubleshooting Techniques

Specific Troubleshooting Techniques

After applying some of the general troubleshooting tips to narrow the…


Textbook

AC Lab - Variable Inductor

AC Lab - Variable Inductor

In this hands-on AC electronics experiment, build a variable conductor and learn the impact of a metal core placed inside an inductor coil has on the inductance.


Textbook

Operational Amplifier Models

Operational Amplifier Models

While mention of operational amplifiers typically provokes visions of…


Textbook

Performance-Based Assessments for Digital Circuit Competencies

Performance-Based Assessments for Digital Circuit Competencies

(Template)


Worksheets - Wireless/RF

The Command-line Interface

The Command-line Interface

If you’ve used DOS or UNIX operating systems before in a…


Textbook

Switches, Hand Actuated

Switches, Hand Actuated

A switch is an electrical component that can “make” or…


Textbook

Circuits and the Speed of Light

Circuits and the Speed of Light

Suppose we had a simple one-battery, one-lamp circuit controlled by a…


Textbook

Metric Notation

Metric Notation

The metric system, besides being a collection of measurement units for…


Textbook

Display Tubes

Display Tubes

In addition to performing tasks of amplification and switching, tubes…


Textbook

Transistor Ratings and Packages (JFET)

Transistor Ratings and Packages (JFET)


Textbook

Voltmeter Impact on Measured Circuit

Voltmeter Impact on Measured Circuit

Every meter impacts the circuit it is measuring to some extent, just…


Textbook

Specific Resistance

Specific Resistance

Designing Wire Resistance Conductor ampacity rating is a crude…


Textbook