[geeks] Ran the numbers - V240

[Jochen Kunz]

Am 09.11.17 um 18:28 schrieb Jonathan Patschke:
> It claims a
> maximum input draw (not including the initial inrush) of 500VA, and a
> maximum DC output of 320W.B  Yours claims 650VA in and 400W out, making it
> somehow worse, despite being physically larger.
VA != W
Energy conversion efficiency is based on active power.
The 320 W DC output is active power.
The 500 VA AC input is complex power. To get active power you have to
multiply it by the power factor cos( phi).

More details: https://en.wikipedia.org/wiki/AC_power
-- 

tschC<C,
       Jochen