Nick,

You are doing a lot of work here, thanks for all the info :-))

Keep in mind that you need an oscilloscope to measure the real power rates.
There are current peaks that your DVM cannot pick up.

The Meridian PS have 40 watts see link in my last post.

Just calculate the power outputs together you get 60 watts, but it's specified to 40 watts. So when all loads at maximum together the PS will limit the outputs, but I suspect the real current requirements are much lower.

We will see when you measure the RMS current with your DVM.

Is there a special reason why you want to know the current consumption of the different supply voltages?

Robert

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