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Power Technical Articles
Test & Measurement
Understanding, Calculating, and Measuring Total Harmonic Distortion (THD)
Total harmonic distortion (THD) is a measurement that tells you how much of the distortion of a voltage or current is due to harmonics in the signal.
February 20, 2017
An Introduction to Ground: Earth Ground, Common Ground, Analog Ground, and Digital Ground
Learn about the basics of grounds, grounding, and ground symbols. Not all grounds are created equal. In this article, we'll discuss earth ground, common ground, analog ground, and digital...
May 18, 2017
The Basics of SSRs (Solid-State Relays): The Switching Device
An introduction to the basic operation of solid-state relays with a focus on the output devices in today’s SSRs.
June 16, 2017
How to Buffer an Op-Amp Output for Higher Current, Part 1
Op-amps become even more versatile if you can use them in high-current applications. In this article, we will look at a basic current-buffering circuit....
March 14, 2016
Understanding MOSFET On-State Drain-to-Source Resistance
This technical brief covers some useful details regarding a common MOSFET parameter referred to as on-state resistance.
September 02, 2016
Reverse Polarity Protection: How to Protect Your Circuits Using Only a Diode
Connecting power with incorrect polarity is an easy mistake to make. Fortunately, protecting your device from reverse polarity is also quite easy....
June 28, 2018
Understanding Total Harmonic Distortion (THD) in Power Systems
This article describes the cause and effect of total harmonic distortion (THD) in power systems. Some means of improving THD are also discussed....
March 15, 2017
An Introduction to Transient Voltage Suppressors (TVS)
An intro to transients and the devices used to suppress them. Learn about the variety of devices used to suppress transients.
May 24, 2017
Need a Current Regulator? Use a Voltage Regulator!
This article, part of AAC’s Analog Circuit Collection, shows you how linear voltage regulators can also be handy in constant-current applications....
February 12, 2018
An in-depth look at transformer isolation. Electrical isolation is necessary to protect circuits, equipment, and people from shocks and short circuits, as well as to make accurate measurements....
July 31, 2015
Discontinuous Conduction Mode of Simple Converters
Discussed here are the discontinuous conduction mode, mode boundary, and conversion ratio of simple converters. During continuous conduction mode, the inductor current in the energy transfer...
June 11, 2015
FET vs. BJT vs. IGBT: What’s the Right Choice for Your Power Stage Design?
This article will help the reader understand the different types of power semiconductors: how they work, their key parameters, and trade-offs....
March 13, 2017
Learning to Simplify: Thevenin and Norton Equivalent Circuits
This article reviews the basics of finding Thevenin and Norton equivalents and discusses how to apply Thevenin's theorem to a practical circuit....
October 01, 2015
How to Troubleshoot a Diode Bridge Rectifier
This article will examine different faults of a diode bridge rectifier to provide some insight into troubleshooting an AC/DC power supply....
February 01, 2019
How the Boost PFC Converter Circuit Improves Power Quality
A boost power factor correction (PFC) converter can significantly improve both the power factor and the harmonic distortion.
December 16, 2016
An Introduction to SCADA Systems
This article walks through SCADA systems used to automate various power systems used in numerous industries. It also details what the system is made up of, how they optimize performance in...
August 31, 2015
The PNP Transistor: Characteristics and Applications
This article helps you understand what PNP transistors are, how they’re used, and why they’re less common than NPN transistors.
April 20, 2018
Overcurrent Protection in AC Power Systems
Get an intro to overcurrent protection and OCPDs (overcurrent protection devices).
October 27, 2017
AC-DC Converters - Disassembling a Linear Power Supply
An AC-DC wall adaptor gets disassembled to see what components are used to build it, then the purpose of each component is analyzed.
December 22, 2015
Galvanic Isolation: Purpose and Methodologies
Galvanic isolation is a way to isolate functional sections of electrical systems to prevent current flow. A brief explanation of differing methods to create galvanic isolation....
January 12, 2016
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