DIY voltage and current reference

DIY voltage and current reference

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Petteri Aimonen designed and built his own voltage and current reference:

When developing a data acquisition system, I ran into a need of having fairly accurate current reference to compare against, 0.1% accuracy or better. This is not a particularly high standard, but unable to find a suitable device in my price range, I chose to design my own.

The gold standard when it comes to calibration references is tying them to some reproducible physical behavior. For current references, that would be a Kibble balance and could achieve accuracy on the level of 0.1 ppm (i.e. 0.00001%). Obviously that is not cheap or easy to build.

DIY voltage and current reference – [Link]

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Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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