3 ms·
Most of them report power factor, which requires measurement of reactive loads.
by mrob 4y ago
Most of them report power factor, which requires measurement of reactive loads.
- hanche 4y agoThanks, that is helpful to know. However, a switch-mode power supply is quite different from a reactive load. Cheap ones tend to draw power only near the voltage peaks, whereas better ones improve on that. See [1] and [2]. So the question remains how well these cheap power meters cope with such a nonlinear load. [1] https://en.wikipedia.org/wiki/Switched-mode_power_supply#Power_factor https://en.wikipedia.org/wiki/Switched-mode_power_supply#Pow... [2] https://en.wikipedia.org/wiki/Power_factor#Power_factor_correction_(PFC)_in_non-linear_loads https://en.wikipedia.org/wiki/Power_factor#Power_factor_corr...