Categories

Digital Communication

Worksheets - Modules

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

Other Diode Technologies

Textbook

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

Networks and Busses

Textbook

The wires between the tank and the monitoring location is  called…

Standing Waves and Resonance

Textbook

Whenever there is a mismatch of impedance between transmission line…

Mixed-Frequency Signals

Worksheets - Modules

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

Radio Circuits

Textbook

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

Pulse Width Modulation

Textbook

Pulse Width Modulation (PWM) uses digital signals to control power…

AC Instrumentation Transducers

Textbook

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

Special Transformers and Applications

Textbook

Impedance Matching Because transformers can step voltage and current…

Phase-Locked Loops

Worksheets - Modules

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

Passive Filter Circuits

Worksheets - Modules

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

Electrical Signal Types

Textbook

With BogusBus, our signals were very simple and straightforward: each…

Principles of Radio

Textbook

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

Network Protocols

Textbook

Aside from the issues of the physical network (signal types and…

Waveguides

Textbook

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

Signal Modulation

Worksheets - Modules

A modern method of electrical power control involves inserting a…

Friis Transmission Calculator

Tools

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

Design Project: Pulse-Width Modulation (PWM) Signal Generator

Worksheets - Modules

What shape of voltage waveform would you expect to measure (using an…

Fundamentals of Radio Communication

Worksheets - Modules

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

Attenuators

Textbook

What is Attenuators? Attenuators are passive devices. It is…

Susceptance and Admittance

Textbook

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

Rectifier Circuits

Textbook

What is Rectification? Now we come to the most popular application of…

Noise Figure and Noise Temperature Calculator

Tools

This calculator computes the noise figure and noise temperature in a system

Impedance Transformation

Textbook

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

Coax Inductance Calculator

Tools

A calculator for computing the inductance of a coaxial cable.

Coax Impedance Calculator

Tools

A helpful tool for calculating the impedance of a coaxial cable.

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.

AC Instrumentation Transducers

Textbook

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

Radio Circuits

Textbook

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

Waveguide Calculator (Rectangular)

Tools

This tool calculates the cutoff frequency of a rectangular waveguide

Pulse Width Modulation

Textbook

Pulse Width Modulation (PWM) uses digital signals to control power…

Power Density Calculator

Tools

A tool designed to calculate the power density of an antenna

Simple Parallel (Tank Circuit) Resonance

Textbook

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

Electromagnetism

Textbook

The discovery of the relationship between magnetism and electricity…

Special Transformers and Applications

Textbook

Impedance Matching Because transformers can step voltage and current…

Maximum Power Transfer Theorem

Textbook

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

BJT Quirks

Textbook

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

Electrical Noise and Interference

Worksheets - Modules

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

Parallel Wire Inductance Calculator

Tools

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

Harmonics in Polyphase Power Systems

Textbook

In the chapter on mixed-frequency signals, we explored the concept of…

Meter Check of a Transistor (BJT)

Textbook

Bipolar transistors are constructed of a three-layer semiconductor…

Conductors and Insulators

Worksheets - Modules

Given two lengths of metal wire, which one will have the least…

The Unijunction Transistor (UJT)

Textbook

Unijunction transistor: Although a unijunction transistor is not a…

Noninverting Amplifier

Textbook

PARTS AND MATERIALS Operational amplifier, model 1458 or 353…

Parallel Resistor-Inductor Circuits

Textbook

Let’s take the same components for our series example circuit…

An Analogy for Divided Feedback

Textbook

A helpful analogy for understanding divided feedback amplifier…

Absolute dB scales

Textbook

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

Capacitance, Reactance, and Admittance Calculator

Tools

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

The Pentode

Textbook

Another strategy for addressing the problem of secondary electrons…

Active Filters

Worksheets - Modules

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

Valence and Crystal Structure

Textbook

Valence: The electrons in the outermost shell, or valence shell, are…

Permeability and Saturation

Textbook

The nonlinearity of material permeability may be graphed for better…

Inverting and Noninverting OpAmp Voltage Amplifier Circuits

Worksheets - Modules

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

Sensing AC Magnetic Fields

Textbook

PARTS AND MATERIALS Audio detector with headphones Electromagnet coil…

MESFETs

Textbook

DC Mesh Current Analysis

Worksheets - Modules

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

Rectangle Loop Inductance Calculator

Tools

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

The Importance of Electrical Safety

Textbook

With this lesson, I hope to avoid a common mistake found in…

Converting Truth Tables into Boolean Expressions

Textbook

In designing digital circuits, the designer often begins with a truth…

The Quadratic Formula

Textbook

Solving for x in a given polynomial equation “ax2 + bx + c…