Posts

Global Voltage Chart

World Travelers, this is for you. Here is an eight page global voltage chart by SurgeX. Almost every country is listed on this chart.

What a great resource. Check it out.

SurgeX International Global Voltage Chartpdf icon

 

 … Read more

Product Data Sheets – What should be on product data sheets?

Random Thoughts by Jim Brown

Jim Brown answers this question, “What should be on product data sheets?”  He gives some very insightful information. Thank you Jim!

The full version of Jim’s article includes sections on Intercom and Infrared systems.

It’s … Read more

It Ain't Just Dirt… Grounding to Reduce Hum and Buzz – Part 2

Theory and Practice – By Dale Shirk

In this article I will discuss the role of grounding in keeping audio and other technical systems free of hum, buzz, and other unwanted noises.

In Part 1 I discussed grounding for safety. … Read more

The Forward-Referenced Interface

Tips and Tricks by Rick Chinn

Connecting computers into audio systems is one of those things that we are called upon to do more and more often these days. The obvious solution uses a cable with a mini-TRS on one … Read more

Shield Current Induced Noise – Causes and Solutions Part 2

Random Thoughts by Jim Brown

Shield Current Induced Noise – Jim Brown addresses the causes and some solutions.

In the last issue, we learned how current flowing on the shield of audio cables will be converted to voltage on the … Read more

Shield Current Induced Noise – Causes and Solutions

Random Thoughts by Jim Brown

This article addresses shield current induced noise caused by the imbalance in the magnetic coupling between the shield and the two signal conductors.

My last two columns have focused on pin 1 problems as an … Read more


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Gauss's Law and the Electrostatic Field

By Dr. Eugene Patronis

The concept of the electric field may be hazy to some readers so we will begin by reviewing some fundamentals. I am assuming that everyone is familiar with the fact that electric charge exists in two … Read more


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The Electrostatic Field and Electrostatic Potential Relationship

By Dr. Eugene Patronis

This is the fourth in a series of articles dealing with coaxial cables operating in the frequency span from direct current through the microwave region. The first article, which dealt only with currents, inductance, and magnetic … Read more

The EMI Project – Part 2 Point Source Field (Magnetic Field)

Theory and Practice – By Dale Shirk

Point Source Field (Magnetic Field) – Dale Shirk addresses how magnetic interference gets into our audio circuits and how to keep it out.

We’ve all learned about electromagnets and magnetism generating current in … Read more

The Electromagnetic Interference (EMI) Project – Part 1 Introduction

Part 1: Introduction by Pat Brown

This article addresses this question, “What are the effects of electromagnetic interference EMI on various types of audio wire?”

Hum and buzz pickup is a common problem for audio systems. SynAudCon Hum and Buzz … Read more