[Werner Almesberger Do 15. Oktober 2009]: > Aaron Carroll wrote: > > LED+ to GND, because I want to include the power lost in R1763. > > Okay, this would explain about 10% of the loss.
Nope it won't, as the converter is powering the LED plus R. So the loss on R isn't of any relevance to estimate the efficiency of the converter. It *is* relevant for the efficiency of the whole LCM-backlight system though. But that's not exactly what we're concerned about here. /j
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