Like many hackers, [Matthias Wandel] has a penchant for measuring the world around him, and quantifying the goings-on in his home is a bit of a hobby. And so when it came time to sense the current … ...

Download this article in PDF format. If you're seeking a way to measure current and power in a circuit, you need to know about current-sense amplifiers (CSAs).

Learn how electric circuits work and how to measure current and potential difference with this guide for KS3 physics students aged 11-14 from BBC Bitesize.