All About Circuits

Latest 5G Education

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A 50-Ohm Cable?

A 50-Ohm Cable?

Early in my explorations of electricity, I came across a length of…


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Design Project: Telegraph System

Design Project: Telegraph System

What voltage will you choose to use for each of the station batteries?


Worksheets - 5G

Balanced Attenuator Calculator

Balanced Attenuator Calculator

This balanced attenuator calculator helps you determine the resistor (R1) values for a balanced attenuator.


Tools

Friis Transmission Calculator

Friis Transmission Calculator

This calculator allows you to solve for any of the six variables in the Friis formula for RF transmission: transmitter power, transmitter gain, receiver power, receiver gain, frequency, or distance.


Tools

Antenna Downtilt and Coverage Calculator

Antenna Downtilt and Coverage Calculator

This calculator will determine the correct antenna downtilt angle given the heights of the antennas and distance between them.


Tools

Passive Filter Circuits

Passive Filter Circuits

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


Worksheets - 5G

Radar Maximum Range Calculator

Radar Maximum Range Calculator

This tool is designed to calculate the maximum distance (range) that a radar can detect


Tools

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

EIRP Calculator

EIRP Calculator

A helpful tool for computing the Effective Isotropic Radiated Power (EIRP) of an antenna


Tools

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

Snell’s Law Calculator

Snell’s Law Calculator

Given three of the four input parameters (refractive indices, angles of incidence, and refraction) this tool calculates the missing variable based on Snell's law.


Tools

Digital Communication

Digital Communication

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


Worksheets - 5G

Link Budget Calculator

Link Budget Calculator

A Link Budget puts into account all gains and losses a signal goes through in a system as it is transmitted. The calculator calculates the power of the received signal given amplifier and antenna gains, and medium loss.


Tools

Analog Lab - 555 Oscillator (Astable Multivibrator)

Analog Lab - 555 Oscillator (Astable Multivibrator)

In this hands-on electronics experiment, build an oscillator using a 555 timer and learn the theory of operation of the 555 timer when configured as an astable multivibrator.


Textbook

Active-mode Operation (BJT)

Active-mode Operation (BJT)

When a transistor is in the fully-off state (like an open switch), it…


Textbook

Skin Depth Calculator

Skin Depth Calculator

A tool designed to calculate skin depth based on the conductive material being used and the frequency of the signal.


Tools

Binary Math Circuits

Binary Math Circuits

Add the following binary numbers:


Worksheets - 5G

555 Lab - LED Flasher with Inductive Flyback

555 Lab - LED Flasher with Inductive Flyback

In this hands-on electronics experiment, build a multiple LED flasher and learn how to use inductive flyback to generate a voltage pulse that is greater than the supply voltage.


Textbook

Inductor Commutating Circuits

Inductor Commutating Circuits

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


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Applying Ohm’s Law—Rules and Methods for Circuit Analysis

Applying Ohm’s Law—Rules and Methods for Circuit Analysis

When analyzing complex series and parallel circuits, it is easy to…


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Boolean Arithmetic

Boolean Arithmetic

Let us begin our exploration of Boolean algebra by adding numbers…


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Four-Channel Audio Mixer

Four-Channel Audio Mixer

A very common misconception students have about potentiometers is the…


Worksheets - 5G

Trigonometry for AC Circuits

Trigonometry for AC Circuits

Identify which trigonometric functions (sine, cosine, or tangent) are…


Worksheets - 5G

Negative Feedback

Negative Feedback

If we connect the output of an op-amp to its inverting input and apply…


Textbook

Basic Logic Gates

Basic Logic Gates

Identify the type of logic gate shown in this schematic diagram, and…


Worksheets - 5G

Digital Lab - Digital Combination Lock

Digital Lab - Digital Combination Lock

In this hands-on electronics experiment, build a digital combination lock with LED output indicators and learn about XOR gate functionality and how to implement NOR logic functionality using diodes.


Textbook

Analog Lab - Non-inverting Amplifier

Analog Lab - Non-inverting Amplifier

In this hands-on electronics experiment, you will build a programmable non-inverting amplifier and learn how to use the negative feedback of an operational amplifier to control the gain.


Textbook

TTL NAND and AND gates

TTL NAND and AND gates

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


Textbook

Performance-Based Assessments for Basic Electricity Competencies

Performance-Based Assessments for Basic Electricity Competencies

(Template)


Worksheets - 5G

The Pentode

The Pentode

Another strategy for addressing the problem of secondary electrons…


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Memory with moving parts: “Drives”

Memory with moving parts: “Drives”

The earliest forms of digital data storage involving moving parts was…


Textbook

Introduction to Boolean Algebra

Introduction to Boolean Algebra

Mathematical rules are based on the defining limits we place on the…


Textbook

Simple Vector Addition

Simple Vector Addition

Remember that vectors are mathematical objects just like numbers on a…


Textbook