So, it's cheaper to put a half wave rectifier in, instead of
a second coil of heater wire? I rather doubt that.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
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wrote in message
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what happens if, say, the Mrs plugs her
cheap blow drier into the same circuit as the primary of the
transformer is plugged in to, and she puts the blow drier on
low (it
uses a half wave rectifier to drop the power to the
heater) - and you
end up with a DC component on the primary - which saturates
the
primary without any increase in secondary (load) current or
power.