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Derive and Plot a Low Pass Transfer Function on MATLAB

Derive and Plot a Low Pass Transfer Function on MATLAB

Learn all about Akerberg-Mossberg Filters and how to plot the frequency response using MATLAB.


Learn About Fourier Coefficients

Learn About Fourier Coefficients

Learn about Fourier series coefficients.


Understanding the Successive Approximation Register ADC

Understanding the Successive Approximation Register ADC

One of the most common analog-to-digital converters used in applications requiring a sampling rate under 10 MSPS is the Successive Approximation Register ADC. This ADC is ideal for applications requiring a resolution between 8-16 bits.


Build an Object Detection DC Motor Controller

Build an Object Detection DC Motor Controller

In this continuing series of Building Raspberry Pi Controllers, you'll learn how to build a object detection control circuit for operating a small DC motor using a photocell.


Projects Dec 27, 2015 by Don Wilcher
Make Your Switch Sound Activated

Make Your Switch Sound Activated

In this article, we'll build a sound-activated switch that can be opened and closed with a double clap.


Projects Dec 21, 2015 by Tim Youngblood
Negative Feedback, Part 10: Stability in the Time Domain

Negative Feedback, Part 10: Stability in the Time Domain

The transient response of a negative-feedback amplifier can help us to understand the nature of stability and convey useful information about the stability characteristics of a particular circuit.


What We Want For Christmas

What We Want For Christmas

We polled a bunch of designers and engineers to see what they were asking for this Christmas. Here's the list!


News Dec 12, 2015 by Jennifer A. Diffley
The Box Craze Hits Engineering

The Box Craze Hits Engineering

Subscription boxes are targeting everyone from preppers to disc golfers. Electrical engineers now have their own set of boxes delivering monthly goodies.


News Dec 10, 2015 by Jennifer A. Diffley
Websites Every Electrical Engineer Should Be Visiting

Websites Every Electrical Engineer Should Be Visiting

The internet is chock full of amazing resources for electrical engineers. We've rounded up some of the best ones.


News Dec 09, 2015 by Alex Udanis
Negative Feedback, Part 9: Breaking the Loop

Negative Feedback, Part 9: Breaking the Loop

A simple “break-the-feedback-loop” simulation technique makes for convenient stability analysis, especially with complex circuits.


Negative Feedback, Part 8: Analyzing Transimpedance Amplifier Stability

Negative Feedback, Part 8: Analyzing Transimpedance Amplifier Stability

The techniques discussed in previous articles can help us to understand and remedy stability problems observed in a common circuit used to amplify photodiode signals.


How to Build a Wall-Following Robot

How to Build a Wall-Following Robot

This is the final part in a series of articles on building a robot that can follow lines or walls and avoid obstacles!


Adaptive Gain Control with the Least Mean Squares Algorithm

Adaptive Gain Control with the Least Mean Squares Algorithm

An introduction to the least mean squares algorithm and adaptive gain control through a simple example.


Negative Feedback, Part 7: Frequency-Dependent Feedback

Negative Feedback, Part 7: Frequency-Dependent Feedback

This article will help you to understand why the frequency response of a feedback network can seriously, and sometimes unexpectedly, degrade stability.


Negative Feedback, Part 6: New and Improved Stability Analysis

Negative Feedback, Part 6: New and Improved Stability Analysis

This article will show you a handy alternative approach to assessing stability via open-loop gain and the feedback factor.


Buck Converters and Their Cool Applications

Buck Converters and Their Cool Applications

The buck converter is a ubiquitous DC-DC converter that efficiently converts a high voltage to a low voltage efficiently. Efficient power conversion extends battery life, reduces heat, and allows for smaller gadgets to be built. The buck converter can be used in lots of cool applications.


Navigating the Boost Converter’s Vulnerability with Alternative Power Conversion Topologies

Navigating the Boost Converter’s Vulnerability with Alternative Power Conversion Topologies

Here are some great power conversion topologies that can be used as alternatives to the boost converter; they are much less vulnerable to short circuit load conditions.


Negative Feedback, Part 5: Gain Margin and Phase Margin

Negative Feedback, Part 5: Gain Margin and Phase Margin

How to use frequency-domain simulations to analyze loop gain and evaluate the stability of your amplifier circuit. We need a way to determine whether a circuit is sufficiently stable—in other words, stable enough to ensure that the circuit will perform properly despite part-to-part variations and environmental or operational conditions that affect the characteristics of the open-loop gain or the feedback network. There is where gain margin and phase margin come into play.


Use LTspice to Understand the LM741 OpAmp: Part 2

Use LTspice to Understand the LM741 OpAmp: Part 2

How an op amp works with LTspice simulation. We left off last time finishing up how the input stage of an op-amp works. The next important stage is made up by transistors Q3, Q4, Q5, Q6, and Q7.


Understanding Analog-to-Digital Converters: Deciphering Resolution and Sampling Rate

Understanding Analog-to-Digital Converters: Deciphering Resolution and Sampling Rate

Resolution and sampling rate are two important factors to consider when selecting an analog-to-digital converter (ADC). In order to understand these fully, concepts such as quantisation, and the Nyquist Criterion must be understood to a certain degree.