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Jan Lategahn (Germany) has put together a series of articles and links describing simple ways to calibrate amateur electronic instruments with a fair degree of accuracy without having to spend a bundle on a professional calibration lab. Methods and devices include DC and AC voltages, resistance, current, RF level, and frequency. Above are Jan’s homemade resistance and DC reference voltage calibrators.

Calibration standards

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of a dozen books on technology, DIY, and geek culture, including the first book about the web (Mosaic Quick Tour) and the Absolute Beginner’s Guide to Building Robots. He is currently working on a best-of collection of his writing, called Borg Like Me.


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