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A/C and D/C run on the same wire at the same time

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mikeeastman:
 I just spoke with a guy that claims  a company has developed a way  to run A/C and D/C power  on the same wire at the same time.  I have PDF of their brochure  and I will PM or E-mail a copy to anyone interested. Anyone ever heard of this?

_Scotty_:
It sounds like one would have +24v DC sitting on the same line as your 120AC. A transformers core is going to want to saturate from the presence of DC on the line and it will need a serious DC blocking filter on its AC input to deal with this.
Scotty

HAL:
Wire is wire.  It carries both DC and AC at the same time anyway.   

For AC-DC power as Scotty said, it will have massive problems with toroidal transformers, but might work with some E-I core styles.  If nothing else it will make the transformers run very hot if a DC voltage is used without a blocking cap. 

Then you need to clean all the AC line noise off the DC power.  More AC filters. 

dBe:
DC on AC is a bigger and bigger issue as time goes by.  A good DC blocking circuit is almost essential these days.  Elevating AC above a DC floor sounds like a recipie for disaster and blown speakers.

Mike, please send me the article.

mikeeastman:
It's not an article but a broacher I can send you a JPC or PDF of it if you want.

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