On Wed, 3 Sep 1997, Joost Kooij wrote:

Hi Joost Kooij,

[..}
> > Does anyone know how efficient normal transformers (230V => e.g. 6V) with
>  diode
> > based rectifiers are? If it is high enough so that a DC/DC switching
 regulator
> > like the LM2574-5.0 (only about 77% efficiency :-( ) could be used? This
 would
> > be pretty easy, because the mentioned inductors are very easy to get ...
>
> Why do you care so much about efficiency if you are going to feed it
> from mains voltage anyway?

I have already many devices at home that run 24hours a day (2 video recorder,
sat receiver, TV`s, ...) and I want to reduce costs ... So, why waste lots of
energy for *nothing* ????? (I have more efficient possibilities to heat my
rooms ;-) )

--
CU.
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