In article , Robert Nichols says...

Topologically in parallel, yes. Consider that when you connect a light
bulb across a battery, they too are topologically in parallel, but that
isn't a particularly useful way to look at the circuit.

No, they're in series.

The example I gave before was what is classically known as
a parallel tuned tank circuit. The internal current of
the two devices are flowing as though they are in series,
but the combination, as connected to the outside world,
are in parallel.

Your light bulb example doesn't work, because there is
noplace for current to flow besides in the single loop
battery - load.

In the "parallel" tank circuit, as in the rotary converter,
each node in the circuit has more than one other connection.

Jim


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