Re:EU agrees on total ban of bee-harming pesticides
by exabrial on Sunday April 29, 2018 @12:56PM
(#16952791)
In fact, it does. A lot of transmission energy is wasted as heat when powering devices with a terrible power factor. Replacing a 60w incandescent with a 15w device that has a .5 power factor isn't netting the environmental savings advertised.
Re:EU agrees on total ban of bee-harming pesticides
by apcragg on Saturday April 28, 2018 @12:01AM
(#16946000)
I'm similarly skeptical that replacing 70 watt bulbs with 15 watt bulbs with poor power factors would end up being a wash. IR loses from the increase in reactive current would not cover the 55 watt gap.
Re:EU agrees on total ban of bee-harming pesticides
by zAy0LfpBZLC8mAC on Saturday April 28, 2018 @01:38AM
(#16946227)
There isn't even any reactive current, it's just a non-sinusoidal load current because there is a rectifier and capacitors for smoothing the rectified voltage at the input.
A power factor is not what you think it is (has zero to do with efficiency).