Re: Midas Board Power Supply

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Harold Weiss" <hweiss-at-new.rr-dot-com> 

Hi Malcolm,

They were in the output side of the supply, the unit had a Corecom filter on
the line side of the main supply.  These appeared to be part of the low
voltage regulator system or part of the supply linking system.  The
regulator board looked almost identical to a Plasmasonic, but drove a single
mosfet with discrete components for each of the supplies.  I couldn't dig
much further as I had to send it back to the audio company.  I also haven't
been able to dig up a schematic on the manufacturers website to shed some
light on what caused the big pahooie mushroom cloud of death.  At least it
killed some major dead time during the load infor the sound crew.

David E Weiss


 > Original poster: "Malcolm Watts" <m.j.watts-at-massey.ac.nz>
 >
 > Hi David,
 >            Forgive me for not asking earlier:
 >
 >
 > Can you infer from looking at the board what job they might have been
 > doing e.g. were they on the primary side in which case they might
 > have been part of an input filter or were they on the secondary side
 > in which case they may have been part of output filtering? If the
 > latter, the cores would most likely be iron powder in which case they
 > may have been subjected to excessively high ripple or AC currents,
 > something which causes iron powder cores to dissipate an awful lot of
 > power. Horribly speculative but trying to be helpful.
 >
 > Malcolm
 >
 >
 >