[LAU] balanced <--> unbalanced

Ralf Mardorf ralf.mardorf at alice-dsl.net
Tue Jan 10 18:15:51 UTC 2017


On Tue, 2017-01-10 at 17:06 +0000, Fons Adriaensen wrote:
> On Tue, Jan 10, 2017 at 04:54:24PM +0100, Ralf Mardorf wrote:
> > I'm sceptic that it makes a difference to connect the - signal with
> > ground at the receiving device.
> 
> Depends on the type of output. If it is a transformer or a circuit
> that controls the voltage difference between the + and - signals 
> rather than each of them separately, then connecting - to ground
> at the input side would compensate for a ground voltage difference,
> while connecting it at the output wouldn't.
 
Hi,

I suspect a misunderstanding.

We are never talking about

  unbalanced out --> balanced in

we are only talking about

  balanced out --> unbalanced in


The difference would be

balanced out        unbalanced in
            + ─────
            - ┐
            0 ┴────

to

balanced out        unbalanced in
            + ─────
            - ────┐
            0 ────┴

IMO it doesn't make a difference.

Regards,
Ralf


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