Arduino components in multisim8/18/2023 This only applies to loads which have a significant inductive or capactive component (such as a motor). However to get the real power or "True Power" (Watts) apparent power must be multiplied by the power factor to make a true measurement of power in Watts. This is significant in AC applications as "Apparent Power" (Volt-Amperes) can be easily calculated using Voltage multiplied by Current. 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.
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