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An Introduction to Negative Impedance Converters

An Introduction to Negative Impedance Converters

An introduction to the properties and purposes of a negative resistance device. Later articles will extend to negative impedances and some applications.


Nodal Analysis and Dependent Sources

Nodal Analysis and Dependent Sources

The use of dependent sources when using Nodal Analysis.


Intermediate LTSpice Tutorial

Intermediate LTSpice Tutorial

LTSpice possesses several features that can be used to test your design beyond simple transient analysis and AC sweeps. This article will go over a few advanced functions.


PICAXE to PC Connections

PICAXE to PC Connections

This article describes in detail the connections necessary for two way communications between PICAXE microcontrollers and personal computers. Both serial connections and USB to serial conversion connections are covered.


Transformer Isolation

Transformer Isolation

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. Isolation transformers are one way to go.


Thin-Film Transistor Displays are the new Virtual Cockpits

Thin-Film Transistor Displays are the new Virtual Cockpits

Thin-film transistor displays are predicted to be the future of car displays. But they may be already overtaken by LCD quantum-dot displays.


News Jul 28, 2015 by Jennifer A. Diffley
Ambient Light Monitor: Display Measurements on an LCD

Ambient Light Monitor: Display Measurements on an LCD

Learn how to use an EFM8 microcontroller to convert current and voltage measurements to digits that can be displayed on an LCD. We'll discuss a convenient way to report analog-to-digital conversion values that represent current and voltage amplitudes.


Projects Jul 26, 2015 by Robert Keim
How to Display an Image on an LCD using an EFM8 Microcontroller

How to Display an Image on an LCD using an EFM8 Microcontroller

Use the EFM8’s USB functionality to transfer an image from your PC to an LCD.


Projects Jul 24, 2015 by Robert Keim
Use a PICAXE Microcontroller to Read and Display Temperature

Use a PICAXE Microcontroller to Read and Display Temperature

The 08M2 is the smallest member of the PICAXE family of microcontrollers; it is inexpensive, versatile, and easy to program using free software.


Special Cases in Nodal Analysis

Special Cases in Nodal Analysis

This article describes certain special cases when performing nodal analysis.


Mesh Analysis and Dependent Sources

Mesh Analysis and Dependent Sources

This article describes the technical aspects of Performing Mesh analysis with Dependent Sources.


Beyond the DMM: Components and Circuits for Measuring Current and Voltage

Beyond the DMM: Components and Circuits for Measuring Current and Voltage

Learn about devices and techniques used for in-circuit monitoring of currents and voltages.


Harnessing Ambient Light: Qualcomm’s Newest Display Technology

Harnessing Ambient Light: Qualcomm’s Newest Display Technology

Qualcomm MEMS's new technology harnesses the power of ambient light.


News Jun 27, 2015 by Tim Youngblood
Interfaces for Computer-Controlled Test Systems

Interfaces for Computer-Controlled Test Systems

A short introduction to some of the more popular interfaces used to connect test instruments to computers.


Measuring Resistance, In Circuit and Out

Measuring Resistance, In Circuit and Out

This article explains how to measure a resistance value, even if the resistor cannot be removed from its circuit.


How Low Can You Go? Measuring Small Voltages with a DMM

How Low Can You Go? Measuring Small Voltages with a DMM

Understanding the relationship between resolution and accuracy will help you determine how small a voltage, current, or resistance—or how small a change in those values—that you can actually measure with your digital multimeter.


Find Your Digital Multimeter Soulmate

Find Your Digital Multimeter Soulmate

Choosing a DMM isn't as simple as it looks. To choose the right DMM for your application, there are a number of factors that you should consider.


Analysis of Four DC-DC Converters in Equilibrium

Analysis of Four DC-DC Converters in Equilibrium

This technical article deals with the analysis of the four fundamental DC-DC converters (or choppers) in equilibrium. The four basic DC-DC converters considered for analysis are the following: Buck Converter, Boost Converter, Buck-Boost Converter and Ćuk Converter.


Make a Digital Voltmeter Using an Arduino

Make a Digital Voltmeter Using an Arduino

It's easy to make a simple digital voltmeter using an Arduino and 16x2 liquid crystal display (LCD).


Projects Jun 04, 2015 by Tim Youngblood
Agilent Technologies Launches Its Most Robust Triple Quadrupole Mass Spectrometer

Agilent Technologies Launches Its Most Robust Triple Quadrupole Mass Spectrometer

Agilent's new spectrometer is their most accurate to date.


News Jun 03, 2015 by Jennifer A. Diffley