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I_dont_have_a_waifu t1_ixd7lhq wrote

Reply to comment by FourierXFM in How exactly is the "direction" of the flow of power measured in a alternating current system? by Landhund

See, in that situation, I'd say that there was a DC and AC component of the signal.

The AC component is the high frequency ripple, with an average value of zero. Then the total signal is the AC signal added to the DC signal.

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VulfSki t1_ixd9umy wrote

Yes. I think in their example tho they are thinking about power supplies that rectify and the smooth ac into a useful DC signal. And on practical terms many people consider the ripple negligible and call it a DC power supply.

But I think they are coming from a pretty simplified explanation and then the added nuances don't exactly work with the simplified explanation

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I_dont_have_a_waifu t1_ixda5h0 wrote

You're right, and it's not often that I would bother thinking much about the AC ripple on a power supply like that. I think the only I really gave it much thought was when I was designing rectifiers, and switching converters back in power electronics.

Otherwise I'd just throw a filter on it and call it a day.

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