Re: 48 v phantom power to 9 v circuit



Richard Crowley wrote:

> "Pooh Bear" wrote ...
> > It's perfectly possible to 'ground lift' with a phantom powered DI.
> > I.e.
> > break the common connection between source and destination.
>
> You'll have to demonstrate your theory with a real schematic
> (or equivalent). I can't see how it is possible to run something
> on phantom power without access to the ground node. Assuming
> that putting a transformer on the DI box *input* (the high-impedance
> side) is even more impractical.

It's simple. The active circuit draws current from the phantom supply
with the console ground as the return path.

A transfomer provides the galvanic isolation ( aka ground lift ) from the
source.

Graham


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