Problema con alimentatore duale

Se il cablaggio è fedele allo schema strano che non scoppi

Capacitors C1 and C2 prevent the input of various electromagnetic no ises (EMI).
Following the above, these voltages are respectively applied to resistances R1-R2 and
R3 - R4 and are used to ensure soft starting of the charging of electrolytic capacitors
C11, C13 and C12, C14, diminishing the danger of absorption of a great mass of
power during initial powering (which would go through the rectifying diode
bridge).This could destroy them.
Bridges C3-R5, C4-R6, C5-R7, C6-R8, and C7-R9, C8-R10, C9-R11 and C10R12,
are used to diminish the noises and the harmonic oscillations produced by the
transference of power by the diodes during the rectifying function, from the diodes.
In practice they are used as EMI filters.
Finally, to the pins of the rectifying bridges attach the two big electrolytic capacitors
which undertake to leve l the switching power given by the rectifying sequences.

capacitors are C11, C13 and C12, C14 respectively for each channel. Instead of these
you may use capacitors from 4700μF - 47000 μF depending on the power required.
Polyester capacitors C15, C16, C16, C18 are connected in parallel with the
electrolytic capacitors and improve the performance of the power supplier especially
at high frequencies.
The continuous symmetric output voltages are given by the respective pins devoid of
noises, parasites and ripples ready to supply.
The grounding of the board is designed to participate in the rejection of noise, with
negligible ohm resistance of the soldered paths. The final points of all the groundings
are connected to one pin (star type grounding). The above techniques are well-known
and tested by most of the serious manufacturers of sound machines.