whit3rd wrote:
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DC voltage and true RMS voltage are equivalent.
DC meters read the average, DC value of a wave.

The voltage, though, for an LED lighting system is NOT
proportional to current; it's the current average that makes
the light output bright or dim. Neither average DC nor RMS
are suitable measures unless it's on a CURRENT scale rather than voltage.


** As previously posted *here* by me - the *power* delivered by a DC source is:
I average x DC voltage.

A moving coil DC meter or regular DMM will show you both.

Do the math any way you like.




....... Phil