Blogs

When I first wrote this I had been on this forum for about a month, and had made myself known. I've been drawing like crazy for the forums, submitted a new section for the eBook (ElectroStatic Discharge), and made a fair pest myself everywhere around here. It seems I made a big enough pest that...

I Am Starting A Conversation About Reworking Printed Curcuit Boards. There Is A Global Market Already In Place And Expensive Tooling Involved. This Market Will Be Shipped Overseas If More Is Not Done To Keep It Local. While Some People Can Compet,with Math And Science,others Should Be Aware That...

A couple of years back we started a thread asking for suggestions for useful websites that members have come across that have helped in all aspects of electronics, from information, learning, software etc. The original thread is one of the most viewed threads here at AAC: Useful Websites for...

I mentioned that I had a disagreement with an news article that reported that people associated Apple with innovation and IBM for something like reliability. Having delivered opinions on Apple, I start in on IBM. I do realize that the GMR head on hard drives has been an absolutely essential...

I went to the 33rd annual OKCA Knife Show yesterday. Once upon a time they billed themselves as "The largest knife show West of the Mississippi." The epithet is still accurate, but is now insufficient. "Largest knife show in America" would also be accurate, but insufficient. According to the...

The attachment in this post is the derivation of the equation for calculating the output voltage of a 3-terminal adjustable linear voltage regulator using Millman's Theorem. All comments or questions regarding the writeup are welcomed. hgmjr

As promised, here is a brief article showing the application of Millman's Theorem to the derivation of the gain expressions for a couple of simple opamp topologies. Any comments or questions concerning the technique I have used in the attached document are welcomed. hgmjr

Many people who use Matlab might not be aware of the File Exchange over at Matlab Central. As described on the Matlab site: Files are organised into 26 different categories depending on application. Files include Matlab functions, help files, cheat-sheets, and mini-projects. These files...

Dynamic methods, a feature of .NET Framework since v2.0, provide a way to create a method at program run time. When I learned about this feature, it looked like an opportunity for me to learn more about the intermediate language (IL) that is at the heart of .NET Framework programming. By way...

The e-book here at AAC is an unfinished and continuous piece of work. We get weekly recommendations for corrections and improvements to the e-book, and as such the e-book relies on the many people who use it to improve the content. Although the editing of the final version of the e-book is...

I have found that half the challenge and 100% of the fun of electronics is being able to accurately predict what is happening in one's circuit. Fortunately, there are many powerful circuit analysis techniques available for use in predicting what is occuring in one's circuit. Most of these...

Proof of principle worked at Radcon 5, now we'll be rolling out the first prototype at Norwescon. I nested wo pieces of C-purlin, (2" web w/ 1/5" legs) to make a tube. I've got six adjustable lamps attached to the back (daylight CFs in them) and eight high-Kelvin color LED lamps slung below...

Originally I posted this work around on the forums, I have had some positive feedback from the posts so in order to prevent it getting lost on the forums I thought it a good idea to post it up here. For those of you that might be using Matlab R2006 onwards there is a bug which means if you...

The newsgroup archive is feature of the All About Circuits Forums that searches decentralized public discussion boards and replicates the discussions locally in a forum-format. Although presented in a forum-format, the newsgroup archive is not open for posting questions and answers like a...

All work and no play makes for a dull Thingmaker. Wiring in the basement is coming along well enough, despite the many interruptions. Work is going well enough, despite the odd customs of Planet Intel. Remodeling a lab (cable tray moving) is on tap for the morrow, followed by can-lights and...

The Socratic Electronics Project is a free project of worksheets and questions designed to support the material covered in the AAC e-book. The worksheets are available to download as PDF files, and available in the following topic categories: Basic electricity DC electric circuits AC...

For the first half of my time spent doing electronics, I was mostly a technician. Just over a year's education in electronics (courtesy of the U.S. Navy), and another 15 months learning about Univac computers and some of their peripherals made up my formal background. The reason that the armed...

Several people have asked me about downloadable versions of the e-book. All 6 volumes are available for download as PDF files: https://www.allaboutcircuits.com/assets/pdf/direct-current.pdf https://www.allaboutcircuits.com/assets/pdf/alternating-current.pdf...