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Friis Transmission Calculator

Tools

This calculator computes the power received by an antenna using Friis formula

Q Factor and Bandwidth of a Resonant Circuit

Textbook

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

EIRP Calculator

Tools

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

Balanced Attenuator Calculator

Tools

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

Design Project: Telegraph System

Worksheets - Telecom

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

Digital Communication

Worksheets - Telecom

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

Antenna Downtilt and Coverage Calculator

Tools

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

Bridged-Tee Attenuator Calculator

Tools

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

Radar Maximum Range Calculator

Tools

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

Snell’s Law Calculator

Tools

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.

Link Budget Calculator

Tools

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.

A 50-Ohm Cable?

Textbook

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

Passive Filter Circuits

Worksheets - Telecom

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

Wire Loop Inductance Calculator

Tools

This calculator helps you compute the inductance of a wire loop.

Computer Simulation of Electric Circuits

Textbook

Computers can be powerful tools if used properly, especially in the…

Waveguides

Textbook

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

JFET Quirks

Textbook

Microstrip Trace Width Calculator

Tools

This tool is designed to compute for the trace width of a microstrip

Asynchronous Counters

Textbook

In the previous section, we saw a circuit using one J-K flip-flop that…

Contributors (1)

Textbook

Contributors to this chapter are listed in chronological order of…

Sources of Electricity

Worksheets - Telecom

What is the difference between DC and AC electricity? Identify some…

How to Use Thevenin’s Theorem

Textbook

This page will walk you step-by-step through the process of…

Kirchhoff’s Current Law (KCL)

Textbook

What Is Kirchhoff’s Current Law? Kirchhoff’s Current Law,…

Flip-Flop Circuits

Worksheets - Telecom

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

Capacitor Impedance Calculator

Tools

This tool calculates a capacitor's reactance for a given capacitance value and signal frequency.

Why L/R and not LR?

Textbook

Learn About L/R Time Constants It is often perplexing to new students…

Si Lab - Full-wave Center-tap Rectifier

Textbook

In this hands-on semiconductor electronics experiment, build a full-wave rectifier for AC to DC conversion and learn about center-tapped transformers.

Encoders and Decoders

Worksheets - Telecom

What does it mean, in general terms, to encode something? Conversely,…

Transistors, Hybrid

Textbook

In essence, the IGFET controls the base current of a BJT, which…

Timer Circuits

Worksheets - Telecom

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

The TRIAC

Textbook

SCRs are unidirectional (one-way) current devices, making them useful…

N-Way Power Divider Calculator

Tools

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

Time-Delay Electromechanical Relays

Worksheets - Telecom

What does the normal status of an electrical switch refer to?…

AC Lab - Build a Transformer

Textbook

In this hands-on AC electronics experiment, build a simple transformer and learn some important transformer fundamentals including voltage step-up and step-down.

Memory Devices

Worksheets - Telecom

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

Voltage Divider Calculator

Tools

The voltage divider is a circuit used to create a voltage less than or equal to the input voltage.

Si Lab - Full-wave Bridge Rectifier With Output Filtering

Textbook

In this hands-on semiconductor experiment, build an improved full-wave rectifier with output filtering and learn about capacitive filtering in AC-to-DC power converters.

Summary of Filters

Textbook

As lengthy as this chapter has been up to this point, it only begins…

The Bipolar Junction Transistor (BJT) as a Switch

Textbook

Bipolar junction transistors (Also known as BJTs) can be used as an…

DC Lab - Build Your Own Multimeter

Textbook

In this hands-on electronics experiment, you will build a simple voltmeter and ammeter while learning some fundamentals about circuit measurements.

Tube Parameters

Textbook

For bipolar junction transistors, the fundamental measure of…

Si Lab - Half-wave Rectifier

Textbook

In this hands-on semiconductor electronics experiment, build a half-wave rectifier circuit using a silicon diode and learn about the differences between permanent magnet motor operation on AC vs. DC power.

Phase Rotation

Textbook

Three-Phase Alternator Let’s take the three-phase alternator…

Bandpass Filter Calculator

Tools

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

Comparator with Hysteresis (Schmitt Trigger) Calculator

Tools

This calculator will compute the required resistor ratio (R2/R1) and reference voltage (VREF) to create the desired high (VTH) and low (VTL) threshold voltages in a non-inverting comparator circuit with hysteresis (commonly called a Schmitt trigger).

Design Project: Telegraph System

Worksheets - Telecom

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

Factoring Equivalencies

Textbook

Factoring Identities :   a2 - b2 = (a + b) (a - b) a2 + 2ab + b2…

Voltage Regulation

Textbook

As we saw in a few SPICE analyses earlier in this chapter, the output…

Voltage and Current

Textbook

As was previously mentioned, we need more than just a continuous path…

Negative Feedback

Textbook

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

What Is the Skin Effect?

Textbook

The Skin Depth of Copper in Electrical Engineering As previously…

Si Lab - JFET Switching Circuit and Static Electricity Sensor

Textbook

In this hands-on semiconductor electronics experiment, use a junction field-effect transistor (JFET) to build a sensitive switching circuit and learn about JFET current gain.

Introduction to Mixed-Frequency AC Signals

Textbook

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