Categories

High-pass Filters

Textbook

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

Polar Form and Rectangular Form Notation for Complex Numbers

Textbook

In order to work with complex numbers without drawing vectors, we…

What is Network Analysis?

Textbook

Generally speaking, network analysis is any structured technique used…

Finite-length Transmission Lines

Textbook

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

Permanent Magnets

Textbook

Centuries ago, it was discovered that certain types of mineral rock…

Power Density Calculator

Tools

A tool designed to calculate the power density of an antenna

“Long’’ and “Short’’ Transmission Lines

Textbook

In DC and low-frequency AC circuits, the characteristic impedance of…

Low-pass Filters

Textbook

By definition, a low-pass filter is a circuit offering easy passage to…

Mutual Inductance

Worksheets - Wireless/RF

When an electric current is passed through a coil of wire, what…

Magnetic Fields and Inductance

Textbook

Whenever electrons flow through a conductor, a magnetic field will…

Noise Figure and Noise Temperature Calculator

Tools

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

Reflection Attenuator Calculator

Tools

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

What is a Filter?

Textbook

It is sometimes desirable to have circuits capable of selectively…

Coax Impedance Calculator

Tools

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

Balanced Attenuator Calculator

Tools

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

Network Protocols

Textbook

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

What Is the Skin Effect?

Textbook

The Skin Depth of Copper in Electrical Engineering As previously…

Half-wave Rectifier

Textbook

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

Q Factor and Bandwidth of a Resonant Circuit

Textbook

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

More on Spectrum Analysis

Textbook

Computerized Fourier analysis, particularly in the form of the FFT…

Millman’s Theorem

Worksheets - Wireless/RF

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

Absolute dB scales

Textbook

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

Contributors (7)

Textbook

Contributors to this chapter are listed in chronological order of…

Regulated Power Sources

Worksheets - Wireless/RF

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

Averager and Summer Circuits

Textbook

If we take three equal resistors and connect one end of each to a…

Special-purpose Diodes

Textbook

Schottky diodes Schottky diodes are constructed of a metal-to-N…

High Voltage Ohmmeters

Textbook

Most ohmmeters of the design shown in the previous section utilize a…

Temperature Coefficient of Resistance

Textbook

You might have noticed on the table for specific resistances that all…

Universal Shift Registers: Parallel-in, Parallel-out

Textbook

The purpose of the parallel-in/ parallel-out shift register is to take…

PC Oscilloscope

Textbook

PARTS AND MATERIALS IBM-compatible personal computer with sound card,…

Diode Switching Circuits

Textbook

Diodes can perform switching and digital logic operations. Forward and…

Superconducting Devices

Textbook

Superconducting devices, though not widely used, have some unique…

Feedback

Textbook

If some percentage of an amplifier’s output signal is connected…

AC Resistor Circuits (Inductive)

Textbook

Instantaneous Values in AC Circuits Pure resistive AC circuit:…

Digital Communication

Worksheets - Wireless/RF

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

Contributors (12)

Textbook

Contributors to this chapter are listed in chronological order of…

Thyristors

Textbook

Thyristors are a broad classification of bipolar-conducting…

Inductor Commutating Circuits

Textbook

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

Strain Gauges

Textbook

If a strip of conductive metal is stretched, it will become skinnier…

An Analogy for Divided Feedback

Textbook

A helpful analogy for understanding divided feedback amplifier…

Friis Transmission Calculator

Tools

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

Non-right Triangle Trigonometry

Textbook

The Law of Sines (for any triangle) The Law of Cosines (for any…

Signal Coupling

Textbook

PARTS AND MATERIALS 6 volt battery One capacitor, 0.22 µF…

DC Generator Theory

Worksheets - Wireless/RF

Generators used in battery-charging systems must be regulated so as to…

CMOS 555 Long Duration Blue LED Flasher

Textbook

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

Practical Power Factor Correction

Textbook

When the need arises to correct for poor power factor in an AC power…

The Common-gate Amplifier (IGFET)

Textbook

Electrical Connections

Worksheets - Wireless/RF

What, exactly, is necessary to establish electrical continuity between…

JFET Current Regulator

Textbook

PARTS AND MATERIALS One N-channel junction field-effect transistor,…

Hysteresis

Textbook

Thyristors are a class of semiconductor components exhibiting…

Transistors, Insulated-gate Field-effect (IGFET or MOSFET)

Textbook

We have the symbols for depletion mode and enhancement mode MOSFETs -…

Tesla Polyphase Induction Motors

Textbook

Most AC motors are induction motors. Induction motors are favored due…

General Troubleshooting Tips

Textbook

When first approaching a failed or otherwise misbehaving system, the…

Practical Considerations - Transformers

Textbook

Power Capacity As has already been observed, transformers must be well…

Electrical Noise and Interference

Worksheets - Wireless/RF

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

Introduction to DC Circuits

Textbook

“DC” stands for Direct Current, which can refer to either…

An Electric Pendulum

Textbook

Capacitors store energy in the form of an electric field, and…

Gas Discharge Tubes

Textbook

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

Pi Attenuator Calculator

Tools

This calculator helps you determine the values of the resistors R1 and R2 to be used for a Pi Attenuator.

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

Worksheets - Wireless/RF

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