Categories

Signal Modulation

Worksheets - Software-Defined Radio

A modern method of electrical power control involves inserting a…

Other Diode Technologies

Textbook

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

BJT Quirks

Textbook

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

Principles of Radio

Textbook

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

Phase-Locked Loops

Worksheets - Software-Defined Radio

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

Maximum Power Transfer Theorem

Textbook

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

Mixed-Frequency Signals

Worksheets - Software-Defined Radio

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

Design Project: Radio Transmitter

Worksheets - Software-Defined Radio

Research the FCC (Federal Communication Commission) guidelines on…

Passive Filter Circuits

Worksheets - Software-Defined Radio

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

Radio Circuits

Textbook

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

What Is the Skin Effect?

Textbook

The Skin Depth of Copper in Electrical Engineering As previously…

Fundamentals of Radio Communication

Worksheets - Software-Defined Radio

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

Special Transformers and Applications

Textbook

Impedance Matching Because transformers can step voltage and current…

Reflection Attenuator Calculator

Tools

This tool is designed to calculate the value of resistance R1 in a reflection attenuator.

Noise Figure and Noise Temperature Calculator

Tools

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

Other Diode Technologies

Textbook

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

Electromagnetic Induction

Textbook

While Oersted’s surprising discovery of electromagnetism paved…

Characteristic Impedance

Textbook

The Parallel Wires of Infinite Length Suppose, though, that we had a…

Introduction to Mixed-Frequency AC Signals

Textbook

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

Peak Detector

Textbook

A peak detector is a series connection of a diode and a…

Finite-length Transmission Lines

Textbook

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

N-Way Power Divider Calculator

Tools

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

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

Decibels

Textbook

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

High-pass Filters

Textbook

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

Wavelength (TEM) Calculator

Tools

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

Network Topology

Textbook

Point-to-Point Connecting two digital devices with a network, would…

Power Added Efficiency Calculator

Tools

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

Electric Fields and Capacitance

Textbook

Introduction Whenever an electric voltage exists between two separated…

Q Factor and Bandwidth of a Resonant Circuit

Textbook

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

What is Network Analysis?

Textbook

Generally speaking, network analysis is any structured technique used…

Selsyn (Synchro) Motors

Textbook

Normally, the rotor windings of a wound rotor induction motor are…

Radio Circuits

Textbook

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

Voltmeter Usage

Textbook

PARTS AND MATERIALS Multimeter, digital or analog Assorted batteries…

Amplifier Impedances

Textbook

Input impedance varies considerably with the circuit configuration…

Op-Amp Practical Considerations

Textbook

Real operational amplifiers have some imperfections compared to an…

Voltage, Current, and Resistance

Worksheets - Software-Defined Radio

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

Active Loads in Amplifier Circuits

Worksheets - Software-Defined Radio

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

Logic Simplification With Karnaugh Maps

Textbook

The logic simplification examples that we have done so far could have…

Time Constant Equations

Textbook

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

Copper Wire Ampacity Table

Textbook

Ampacities of copper wire, in free air at 30o C: INSULATION TYPE…

Some Examples with AC Circuits

Textbook

Let’s connect three AC voltage sources in series and use complex…

Sensitive Voltage Detector

Textbook

PARTS AND MATERIALS High-quality “closed-cup” audio…

Semiconductor Manufacturing Techniques

Textbook

The manufacture of only silicon based semiconductors is described…

Tank Circuit Resonance Calculator

Tools

This calculator computes the resonant frequency of a tank circuit

Oscilloscope Trigger Controls

Worksheets - Software-Defined Radio

A very useful tool for observing rotating objects is a strobe light.…

Conversion From Decimal Numeration

Textbook

Because octal and hexadecimal numeration systems have bases that are…

Sensitive Audio Detector

Textbook

PARTS AND MATERIALS High-quality “closed-cup” audio…

Simultaneous Equations for Circuit Analysis

Worksheets - Software-Defined Radio

Solve this equation for the value of x: x + 5 = 8 How many exact…

Gas Discharge Tubes

Textbook

If you’ve ever witnessed a lightning storm, you’ve seen…

Winding Configurations

Textbook

Transformers with Multiple Secondaries Transformers are very versatile…

Gate Universality

Textbook

NAND and NOR gates possess a special property: they are universal.…

Basic Logic Gates

Worksheets - Software-Defined Radio

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