"Gordon Wedman" wrote in
news:rCf0f.291283$tt5.93571@edtnps90:

Could be good for the laptop as well.

Switching power supplies like the laptop could care less. The first thing
they do is digest any waveforms fed to them into unregulated DC to feed the
hungry power FETs doing the switching. Notice how it says any voltage is
fine between 85 and 280VAC at any frequency?

--
Larry