On Sunday, November 8, 2020 at 12:46:33 AM UTC-8, Andy Burns wrote:
brucek wrote:

i'd guess because they are non-sinusoidal outputs and one of the meters is not true rms
I'd say neither of them are true RMS.

Good point--measuring DC current average is the appropriate setting, and there's
no DC-scale on any of my meters that does RMS measure.

Voltage, averaged or RMS averaged, is going to deliver at-or-near nonsense numbers
for the purposes of evaluating an LED illuminator.