On Friday, April 9, 2021 at 12:19:10 AM UTC-7, wrote:
wrote:
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This blows Phil's statement out the water which is rare, there is no TRMS in DC.


" true RMS " = DC equivalent value for the *heating* effect on a resistance.

Known. but a DC meter might not be set up for that.
** You are not paying proper attention.

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.