Everything for Electronics

Circuit Simulation Made Easy

After reading the May-June 2018 NV article on Ohm’s law, I thought a follow-up article that goes a little deeper might be in order. Specifically, how Ohm’s Law together with a computer and a couple of tricks can be used to calculate the time dependence of much more complex circuits involving not just resistors but capacitors, inductors, op-amps ... you name it! In this article, I’ll describe a simple numerical method that is intuitive and solves many complex problems with just a few lines of code. No simulator needed!


More Tricks with Old-School Digital Clocks

Here are a few of the many possible variations on the general theme of discrete-logic digital clocks. If you have a few LED displays, counters, drivers, and simple logic, you can probably build a clock. Consult the datasheets of the ICs you choose to use, breadboard everything first, and have fun.


Seven Common Ways to Generate a Sine Wave

The sine wave is a naturally occurring signal shape in communications and other electronic applications. Many electronic products use signals of the sine wave form. Audio, radio, and power equipment usually generates or processes sine waves. As it turns out, there are literally dozens of ways to generate a sine wave. Here are some popular methods you should be familiar with.


Magnetic Saturation And The 100 Amp DC Current Transformer

For most of us, measuring DC current means putting an ammeter or low resistance current shunt in the line. But now, you can build an adapter that can be used with your voltmeter and will measure 100 amps DC.                   


Wire Wrap Is alive And Well!

Construction articles found in electronics magazines use printed circuit boards for all but the simplest circuits, so investing time and money into the PC board fabrication process seems to be the next logical step, albeit a bit daunting for the new hobbyist. PC board fabrication is not necessarily the next step.

There is another alternative … wire wrap.


The Lost Art of Strip Board Prototyping

Many techs of yesteryear built their projects on a breadboard, then would transfer everything to a mirror copper clad board. Here's everything you need to know to use this timeless technique to wire up circuits for prototyping or functional applications.


Build the 3D LED Matrix Cube

This article shows you how to build a really cool 3D cube with a 4 x 4 x 4 monochromatic LED matrix which has a total of 64 LEDs.

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