About this Site:
Circuit Exchange International (CXI) is my personal, non-profit home page. First created back in March 1999 and intended for electronics hobbyists, engineers and enthusiasts everywhere. Currently there are 310 schematics divided into 11 categories. Also included are tutorials, design and simulation sections. If you ever type Circuit Exchange International, then you'll realise why I abbreviate it to CXI.
This site has been viewed from over 220 Countries in all 6 Continents. Although largely a single effort, I do welcome contributions to this site. This website is made entirely on Linux using Bluefish All graphics are produced with the Gimp.
The web has become an "Internet of Things" (IoT), and many of you reading this, may be viewing on tablets, mobile phones, or even Smart TV's. When I first created Circuit Exchange, I only had to create content for PC's and laptops. Now with various devices and different display resolutions, it is a much more difficult job to create a consistent look.
People like interactive sites and animated graphics, and using HTML5, CSS3 and jQuery my site is undergoing continuous changes. Whilst most internet browsers adhere to the rules laid down by the W3C, some do not, most notably early versions of Microsoft's Internet Explorer. IE10 and higher now follow the standards of other browsers, but if something does not look correct, and you use Windows, you can always try Google Chrome or Firefox. (The circuit pages should always be view-able though.)
This site is also Android friendly and will work with most tablets. I currently test with an Android Tablet, Samsung Smart TV @ full 1080p resolution and a PC monitor at 1280x1024. Some pages may be a little hard to see on smaller displays, so I recommend a minimum resolution of 1024x768 pixels.
To combat spam the email address below is an image, not text. You need to enter the address directly, it is not a link.
Because of extended contributions and support the people named below have full permission to use or reproduce any article, circuit or content from Circuit Exchange International:
1. This site may contain technical inaccuracies or other errors.
2. Please DO NOT copy from this site. If you would like to use circuits please email me.
3. Linking to this site is actively encouraged, but please create a working link back to Circuit Exchange International
5. You may link to this site or any page, but please make a reference to the original contributor.
6. Some sites have taken circuits from this site and claimed it as their own work. They are without honour.
This web site is free from commercial advertising and is totally free. The only cookies used on this site are for the web counter, domeus newsletter and stat-counter. Information collected by the web counters includes your ISP (internet service provider), country code, operating system, browser, date and time, and pages visited, and referral link. Google widgets is used for translation and search site. No information is sold or passed on and counters serve to indicate popularity of pages.
Frequently Asked Questions
i) Most components are labeled using the System International numbering system.
ii) Please don't ask for schematics for domestic electrical or electronic equipment, I don't have any.
iii) This site is non-commercial, I do not sell or buy, components or circuits on this site.
iv) The update page contains links to the newest pages on my site.
v) I regret that I cannot help with college/school/university/project work, but see links below.
Help on the Internet
Sorry but I cannot help with college or course work. However, before asking for help, try to solve your problem yourself or search on google. Remember that anyone who helps is a volunteer and gives their time freely, demanding that you need an answer by a specific date will not help your plea. If you are still stuck try the following forums:
About the Web Master
As a hobby, electronics can be rewarding, sometimes challenging. It is always good to hear from fellow hobbyists around the world. Some recommended books, "The Art of Electronics" by Harrowitz and Hill, and if you are interested in circuit simulation, "The Spice Book" by Andrei Vladimerescu is a great technical reference. These may be available in a library near you.
Currently "on my workbench", shown right I have a motor control and torque circuit, and a Raspberry Pi Analog Interface. These circuits will be published shortly.