Welcome to a collection of articles by Jon Chandler. Most of these articles have been published elsewhere and are collected here for convenience. Unless otherwise noted, these articles are licensed under a Creative Commons 3.0 BY SA agreement. You are free to use articles under this license provided the source is attributed and the material is shared under the same terms. Additionally, I'd like to know if you find these articles useful or post or link to them. Please email me.
The sidebar to the left lists the articles available. I hope you find them useful.
Be sure to check out the TAP-28 PIC Application board, designed from the start for embedded projects using most 28-pin PIC microcontrollers. A number of applications are presented showing the versatility of the low-cost TAP-28 platform.
Featured Article: AC-DC Power Supplies - Using Wall WartsHack-A-Day Listing
Everything You Need to Know About Wall Warts
posted Apr 6th 2011 5:02am by Kevin Dady
If you work with electronics at any skill level you need juice. Jon has a great, and clearly worded tutorial about Wall Wart Power Supplies with pretty much everything you need to know about those little black boxes hanging off of your outlets.
The whole thing starts off with the basics like transformers, rectification smoothing and regulation, then moves on to the different basic types, dedicating a page to linear, regulated and switching types, giving output performance charts under different situations.
Also included is a run-down of DC barrel jack structure so you get the right plug every time, wall wart type identification, a random sample comparison test, and a good selection of formulas to even keep the old hats reading along. Although you might want to set aside a little time at 9 pages and some Q/A in the comments, it might take a moment to read.
Comment From Hack-A_Day Reader G8erB8, Posted at 8:24 pm on Apr 6th, 2011
Thank you so much for writing this. I’ve been putting off getting a power supply for my project just because I didn’t fully understand everything. This is a huge help.
Comment From SparkFun Forum Reader UNTEngineer, Posted: Fri Apr 08, 2011 9:14 pm
What a useful tutorial. I'll be sure to bookmark it for future reference.
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