They are both correct.  What you are missing is the idea that the + side
of an electrolytic cap must always be at a higher potential than the -
side of the cap.

In both circuits this is the case.  The second circuit shows the +
connected to gound and the - connected to the negative 15 volt supply,
which is at a lower potential with respect to ground.

-Adam

Tal Bejerano - AMC wrote:

>Hi 2 All
>
>Look at the attached files, it's a schemes from 2 sites , look at the
>capacitors mounted on the negative rail.
>which one is correct or I miss something here? in which order should be the
>capacitors on the negative rail?
>
>Regards
>
>Tal Bejerano
>AMC - ISRAEL
>
>

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