Robert Rolf wrote:
>>> Why would DC draw be bad? Full wave rectifier transformers draw DC
>>> on each half of the secondary, so that can't be an issue.
>>
>> But that doesn't lead to a DC bias on the line side, does it?
>
> Does it matter WHICH transformer sees only half cycle loading?

It matters whether the AC line sees the DC, since that's what we're talking
about.  If the DC is in the secondary of a transformer which is not directl=
y
connected to the AC line, then it is irrelevant.

Once again, the question was whether it's bad to draw net DC **from the AC
power line**.  How exactly do you imagine a transformer-coupled full wave
rectifier has any bearing on this?

To be clear (since you weren't I'm going to pick something), the AC line is
driving the transformer primary.  The secondary is center tapped with the
center tied to ground and each end of the secondary drives the positive
supply thru a diode.  Please explain how that presents a net DC load on the
AC line, or is even relevant to the discussion.  Invoking dead fish or phas=
e
of moon is not allowed.


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