This can be also be done purely through code including the ability to measure non-linear loads, which I will aim to cover in another instructable.įor the benefit of any beginners reading this, power factor is the ratio of true power to apparent power and can be calculated by finding the cosine of the phase angle between the supply voltage and current (see attached image from Google). This is a hardware solution to the problem of measuring PF in linear loads. Warning! If you are not trained or do not know how to work correctly with mains voltage I suggest you don't proceed with that part of the instructable and I will show you a safe method of proving the circuit works.
This will NOT work with NON-LINEAR (e.g.This will ONLY work with LINEAR loads (e.g inductive motors, transformers, solenoids).Before we start theres a few things to bear in mind: Hi everyone! This is my third instructable, hope you find it informative :-) This will be an instructable on how to make a basic power factor measurement using an Arduino.
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