Ron H said:
I have to confess I started this quagmire just to clarify the fact that there is a significant difference between average and RMS for a pulsed waveform.
Sorry, I'm not a priest, I don't take confessions :lol:
To try and make it easier to understand, how about this:
You have a 1KW electric fire, and turn it ON for an hour, energy consumed 1KWH - heat produced accordingly. You then turn the same fire ON for half an hour, and leave it OFF for the second half hour, energy consumed is 0.5KWH - heat produced is half of that previously produced.
The only difference between that and the LED is the frequency of switching.