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Lagging power factor visualised. Thought it would be interesting to show the mains and current input waveforms from a magnetic choke without the PFC fitted. You can clearly see the current draw lagging behind the voltage waveform by several milliseconds.

Lagging power factor visualised.

Thought it would be interesting to show the mains and current input waveforms from a magnetic choke without the PFC fitted. You can clearly see the current draw lagging behind the voltage waveform by several milliseconds.

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Album name:FrontSideBus / Tests & Experiements
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Date added:25 Mar, 2016
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Comment 1 to 7 of 7
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AngryHorse   [27 Mar, 2016 at 03:11 PM]
That is interesting to see it, but I still don`t get why this would cause it to use more power than its rated at?
FrontSideBus   [27 Mar, 2016 at 04:56 PM]
Trying to explain "real" and "apparent power" is a pain in the arse so I'm not going too! Smile
AngryHorse   [27 Mar, 2016 at 08:51 PM]
In short, is it like its reading the load twice? Confused
Andy   [27 Mar, 2016 at 08:59 PM]
I had this explained to me by a electronic engineer and it was rather complex. The main issue I was pleased to establish was that using magnetic gear with low power factor on a domestic meter doesn't cost you more whilst it would if you were a commercial premises.
Kev   [27 Mar, 2016 at 09:53 PM]
Only if you are metered for it. A lot of properties they don't bother these days. Factories years ago used to have massive capacitor banks to reduce power factor from all the different motors and shit around the factory!
FrontSideBus   [27 Mar, 2016 at 11:27 PM]
We've got some big PFC's in our substation at work!
XmasLightGuy   [28 Mar, 2016 at 03:49 AM]
Interesting to see this. So with those ballasts that they call a 'lead/lag', does that mean one lamp is running like this and the other would be opposite? so it works out to give s correct power-factor?

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