Differential Scope Primer is a good introduction to oscillospe measurement. This web posting is a shortened version of the information on that document related to ground loops. I have also added here some of my own comments. Most oscilloscopes are designed to measure voltages that are referenced to earth ground, which is connected to the →
So, if you have wondered why LED light bulbs are so expensive today, How LED Light Bulbs Are Made article gives explanation of how they are manufactured and how that compares to the manufacture of traditional light bulbs should help. However, it also reveals why the cost will fall pretty dramatically over the next few →
EDN magazine publishes every year directory on various microprocessorors. The directory provides a snapshot each year of the companies, products, intellectual property, and software-development tools available as digital-signal-processing resources for embedded-system developers. Scratching the surface: The 2010 DSP Directory lists the relevant DSP offerings this year. This directory aims to provide designers and system architects →
Selling products whose design anyone can access, edit, or use on their own is pretty crazy. It’s also good business according to 13 Open Source Hardware Companies Making $1 Million or More (video) article. The article mentions thirteen companies with million dollar revenues from open source hardware (OSHW).Companies providing OSHW allow all designs of the →
URL Encoding is used when placing text in a query string to avoid it being confused with the URL itself. It is normally used when the browser sends form data to a web server. URL Encoding replaces spaces with “+” signs, and unsafe ASCII characters with “%” followed by their hex equivalent. The URLEncode and →
Power Quality and Utilisation Guide is a free on-line reference source for power quality information. It provides both background theory and solutions from electrical power industry. The guide is prepared by specialist authors from industry and academia, and edited by Copper Development Association‘s David Chapman. The Guide is organized into 8 sections and presented in →
MUST SEE!: LEGO Mindstorm Pirate Movie is a little movie made using nothing by LEGO Mindstorm NXT sets and LEGO blocks. It is amazing. The movie is only 2:20 long, and the rest of the video shows you what’s behind the curtain. I think this could be one of the best Lego buildings on youtube. →
Internet is usually a goldmine of all technical information, but there’s not much on the internet about the rpm rotation sensor and it’s specification. CPU Cooling Fan Tachometer standards tries to fill this gap. It page describes a little about the tachometer or rpm rotation sensor and it’s electronics. CPU fan pinout page gives the →
Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It’s intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments. So very interesting stuff.. The microcontroller on the board is programmed using the Arduino programming language and the Arduino development environment. Arduino programming environment is lean →
I have written a lot of on electret microphone connections on my Powering microphones document. Here are some additions to my documents on electret microphones I found at SANKEN Basis of Wiring Method web page. The first circuit diagram shows the traditional “2 wire” method of wiring an electret capsule. Practically all electrets I have →