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Sep
24
awarded  Autobiographer
Jul
1
comment Does a computer use more electricity when charging USB devices?
The OP was referring to charging from a practical computer. While I have no doubt that one could artificially add dissipative elements which switch in under certain circumstances, to prove a point, that would constitute increased load, (for the purposes of trying to prove a point), and not increasing loss. But if there's a reasonable and practical power supply design that exhibits a negative loss function, and is not improved measurably in terms of cost or performance by eliminating the negative loss function, then I'd like to see it.
Jul
1
awarded  Editor
Jul
1
revised Does a computer use more electricity when charging USB devices?
grammatical improvement for clarification of meaning
Jun
29
comment Power to VAIO laptop ports while plugged in
The schematic here shows a laptop charger. The Y-capacitor causing most of the leakage current is shown as C11. The X-capacitor is C1.
Jun
29
answered Power to VAIO laptop ports while plugged in
Jun
29
answered Does a computer use more electricity when charging USB devices?
Jun
29
awarded  Supporter
Jun
29
awarded  Teacher
Jun
29
answered Adding a CRT display to my HP Mini laptop