"John B." wrote in message
...

I'm not arguing that a PWM isn't efficient. I'm merely pointing out
that the general, run of the mill, 12 VDC LED fixture is either a
series wired bunch of LEDs or a series parallel wired bunch of LEDs,
possible with resisters in the series circuits. They normally draw
so
little current that there is no necessity for a wire wound resister.
John B.

FWIW, the 24" LED rope light that illuminates my keyboard shelf
indicates 8W on a KAW.