Categories

Electromagnetic Induction

Textbook

While Oersted’s surprising discovery of electromagnetism paved…

Resistor Color Code Calculator and Chart—4 Band, 5 Band, or 6 Band Resistors

Tools

A handy all-in-one tool for reading resistor color code values for a 4 band resistor, 5 band resistor, or 6 band resistor.

Q Factor and Bandwidth of a Resonant Circuit

Textbook

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

Voltage Divider Circuits

Textbook

Let’s analyze a simple series circuit and determine the voltage…

Capacitor Impedance Calculator

Tools

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

AC Capacitor Circuits

Textbook

Capacitors Vs. Resistors Capacitors do not behave the same as…

Superposition Theorem

Worksheets - Passives

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

Capacitance Calculator

Tools

This calculates the capacitance of a capacitor based on its charge, Q, and its voltage, V, according to the formula, C=Q/V.

Active-mode Operation (BJT)

Textbook

When a transistor is in the fully-off state (like an open switch), it…

AC Lab - Phase Shift in a Capacitive Circuit

Textbook

In this hands-on AC electronics experiment, build a simple RC circuit that demonstrates phase shift and learn how out-of-phase AC voltages do not add algebraically.

Power in Resistive and Reactive AC circuits

Textbook

Consider a circuit for a single-phase AC power system, where a 120…

Time Constant Calculations

Worksheets - Passives

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

Copper Wire Ampacity Table

Textbook

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

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.

Analog Lab - Op Amp Integrator

Textbook

In this hands-on electronics experiment, you will build an analog integrator using an operational amplifier and learn about integration functions, op amp input bias currents, and how to limit the voltage swing of a potentiometer.

Resistors Types

Textbook

These are the most common types of resistors available. Resistors…

Series LED Resistor Calculator

Tools

This series LED resistance calculator is perfect for when you have a single LED or a number of the same color of LEDs in series and need to know which resistor you should use.

Rectangle Loop Inductance Calculator

Tools

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

Series R, L, and C

Textbook

Let’s take the following example circuit and analyze it:  …

Intro Lab - How to Use an Ohmmeter to Measure Resistance

Textbook

In this hands-on introduction to electronics, you will experiment with a multimeter and learn how to measure resistance using the ohmmeter function.

The Thyristor

Textbook

A thyristor is a device that has a number of unusual characteristics.…

Safe Practices

Textbook

If at all possible, shut off the power to a circuit before performing…

Digital Logic With Feedback

Textbook

With simple gate and combinational logic circuits, there is a definite…

Synchronous Motors

Textbook

Single Phase Synchronous Motors Single-phase synchronous motors are…

Power Added Efficiency Calculator

Tools

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

Millman’s Theorem Revisited

Textbook

You may have wondered where we got that strange equation for the…

Network Topology

Textbook

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

Tesla Polyphase Induction Motors

Textbook

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

DC Bridge Circuits

Worksheets - Passives

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

Wire-by-Number project kit introduction

Worksheets - Passives

Wire-by-Number project: simple voltage divider Description: Build a…

The Common-base Amplifier

Textbook

The final transistor amplifier configuration (Figure below) we need to…

Capacitor Sizing Equation

Textbook

Capacitance Formula     Permittivity of Dielectric  …

Design Project: Voltmeter

Worksheets - Passives

The most important component of your voltmeter will be the…

Amplifier Circuits

Textbook

Note, Q3 and Q4 in the figure below are complementary, NPN and PNP…

Data Flow

Textbook

Buses and networks are designed to allow communication to occur…

Physiological Effects of Electricity

Textbook

Most of us have experienced some form of electric “shock,”…

Broadside Coupled Trace Inductance Calculator

Tools

This calculator helps you compute the inductance of a broadside coupled trace.

Thevenin’s, Norton’s, and Maximum Power Transfer Theorems

Worksheets - Passives

Suppose a 12 volt lead-acid battery has an internal resistance of 20…

Resistor Color Codes

Textbook

Try out our Resistor Color Code Calculator in our Tools section.…

AC Lab - Sensing AC Electric Fields

Textbook

In this hands-on AC electronics experiment, you will sense AC electric fields using the sensitive voltage detector and learn about capacitive coupling, EMI, and shielding techniques.

Latch Circuits

Worksheets - Passives

What do you think this logic buffer gate will do, with the output…

Complex Voltage and Current Calculations

Textbook

There are circumstances when you may need to analyze a DC reactive…

Safe Circuit Design

Textbook

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

Diodes

Textbook

A diode is an electronics component made from a combination of a…

Complex Number Arithmetic

Textbook

Since complex numbers are legitimate mathematical entities, just like…

Summer and Subtractor OpAmp Circuits

Worksheets - Passives

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

Important Constants

Textbook

Euler’s Number Euler’s constant is an important value for…

Analog and Digital Signals

Textbook

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

Pressure Unit Conversion Calculator

Tools

This calculator will convert pressure values to ten different standard units for pressure.

Digital Lab - 10-bit Flashing LED Sequencer

Textbook

In this hands-on electronics experiment, build and test an automated circuit that sequentially flashes 10 LED, and learn about counters, frequency dividers, and switch debouncing.

Wire Loop Inductance Calculator

Tools

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

Ohm’s Law - How Voltage, Current, and Resistance Relate

Textbook

The first, and perhaps most important, relationship between current,…

Harmonic Phase Sequences

Textbook

In the last section, we saw how the 3rd harmonic and all of its…

Design Project: Telegraph System

Worksheets - Passives

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

OpAmp Oscillator Circuits

Worksheets - Passives

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

Arc Flash and Arc Blast

Worksheets - Passives

Electromechanical relays used to start and stop high-power electric…

Conductor Ampacity

Textbook

The smaller the cross-sectional area of any given wire, the greater…

Semiconductor Manufacturing Techniques

Textbook

The manufacture of only silicon based semiconductors is described…

Complex Circuits

Textbook

What do we do if we come across a circuit more complex than the simple…

Permanent Magnets

Textbook

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