Categories

Optical Data Communication

Textbook

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

Special Transformers and Applications

Textbook

Impedance Matching Because transformers can step voltage and current…

Fundamentals of Radio Communication

Worksheets - Antennas

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

What Is the Skin Effect?

Textbook

The Skin Depth of Copper in Electrical Engineering As previously…

Free Space Path Loss Calculator

Tools

This calculator calculates the free space loss, given the distance, frequency, and gain, between two antennas.

RF Power Ratio Conversion Calculator

Tools

This tool is designed to convert power ratios to decibel

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.

Radar Maximum Range Calculator

Tools

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

EIRP Calculator

Tools

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

Radio Circuits

Textbook

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

BJT Quirks

Textbook

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

Passive Filter Circuits

Worksheets - Antennas

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

Mixed-Frequency Signals

Worksheets - Antennas

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

Microstrip Patch Antenna Calculator

Tools

This tool calculates the dimensions of the microstrip patch antenna given the desired operating frequency.

AC Instrumentation Transducers

Textbook

Just as devices have been made to measure certain physical quantities…

Principles of Radio

Textbook

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

Waveguides

Textbook

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

Signal Modulation

Worksheets - Antennas

A modern method of electrical power control involves inserting a…

Digital Communication

Worksheets - Antennas

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

Friis Transmission Calculator

Tools

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

Signal Modulation

Worksheets - Antennas

A modern method of electrical power control involves inserting a…

Inductance, Reactance, and Admittance Calculator

Tools

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

Electric Fields and Capacitance

Textbook

Introduction Whenever an electric voltage exists between two separated…

VSWR / Return Loss Calculator

Tools

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

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.

Q Factor and Bandwidth of a Resonant Circuit

Textbook

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

Electric Shock

Worksheets - Antennas

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

Digital Communication

Worksheets - Antennas

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

Phase-Locked Loops

Worksheets - Antennas

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

Analog and Digital Signals

Textbook

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

Susceptance and Admittance

Textbook

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

Microstrip Inductance Calculator

Tools

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

Waveguide Calculator (Circular)

Tools

This tool calculates the cutoff frequency of a circular waveguide

Other Diode Technologies

Textbook

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

EIRP Calculator

Tools

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

Electromagnetic Induction

Textbook

While Oersted’s surprising discovery of electromagnetism paved…

Other Waveshapes

Textbook

As strange as it may seem, any repeating, non-sinusoidal waveform is…

Half-wave Rectifier

Textbook

PARTS AND MATERIALS Low-voltage AC power supply (6-volt output) 6-volt…

Power Added Efficiency Calculator

Tools

A calculator designed to compute the power-added efficiency (PAE) of an amplifier

Data Flow

Textbook

Buses and networks are designed to allow communication to occur…

Time Constant Equations

Textbook

Value of time constant in series RC and RL circuits   Time…

Special-purpose Batteries

Textbook

Mercury Standard Cell Back in the early days of electrical measurement…

Algebraic Substitution for Electric Circuits

Worksheets - Antennas

There are two basic Ohm’s Law equations: one relating voltage,…

Calculus for Electric Circuits

Worksheets - Antennas

∫f(x) dx Calculus alert! Calculus is a branch of mathematics that…

Special-output Gates

Textbook

Complementary Output Gates It is sometimes desirable to have a logic…

Safe Circuit Design

Textbook

As we saw earlier, a power system with no secure connection to earth…

Capacitance, Reactance, and Admittance Calculator

Tools

A calculator for solving the capacitance, reactance, and admittance of a capacitor.

JFET Quirks

Textbook

CMOS 555 Long Duration Blue LED Flasher

Textbook

PARTS AND MATERIALS Two AAA Batteries Battery Clip (Radio Shack…

Vol III. Credits

Textbook

All entries arranged in alphabetical order of surname. Major…

Characteristic Impedance

Worksheets - Antennas

Note the “50 ohm” rating printed on the jacket of the cable. What…

Thevenin-Norton Equivalencies

Textbook

Since Thevenin’s and Norton’s Theorems are two equally…

Active Loads in Amplifier Circuits

Worksheets - Antennas

We know that the current in a series circuit may be calculated with…

Inductor Commutating Circuits

Textbook

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

Multiplexers

Textbook

A multiplexer, abbreviated mux, is a device that has multiple inputs…

Design Project: Event Counter

Worksheets - Antennas

If your event sensing switch is mechanical in nature, you will likely…

Multiple-input Gates

Textbook

The Use of Logic Gate Inverters and buffers exhaust the possibilities…

Protective Relays

Textbook

A special type of relay is one that monitors the current, voltage,…

Voltage Regulator

Textbook

PARTS AND MATERIALS Four 6 volt batteries Zener diode, 12…

Design Project: Sensitive Microphone Amplifier

Worksheets - Antennas

Identify which direction each potentiometer wiper must move in this…