MS - SOUND decoders MS440 to MS990 and MN - NON-SOUND decoders MN170 to MN340 Page 13
MS580N18 Top side (with Next18)
NOTE: External energy storage with MS580N18
The “Next decoder” MS580N18 contains a bigger internal capacity with
a voltage of 5 V. The Tantal capacitors provide the sound amplifier and the
motor (only with 5 V, which is enough for slow driving) in case the track voltage
is interrupted. The internal capacity is enough for a stay-alive of about 0.1 sec
and thereby prevents cracking noises and gets through short powerless sections.
This internal capacity can be expanded externally, either by
• further Tantals of the same type (to be connected via a small wire bridge) or
by Elkos. The total capacity is NOT limited, a dielectric strength of the capaci-
tors of 6.3 V is enough, or
• two miniature Goldcaps connected in series (best possibility, if there is
enough room, but it can also be put at any other place within the loco con-
nected via wires). Types with 12 x 4 mm (length x diameter) are available as
MGOGURT with 2 x 0.3 F at 2.7 V, which enable a stay-alive of 1-2 seconds.
Goldcaps or Super caps with higher energy density are to be expected in fu-
ture.
If (for example because of the lighting) the buffer of the 5 V voltage is not
enough, but the full running voltage shall be buffered, capacitors (practically with-
out limitation) can be connected like to every other decoder, to “Gem. Pluspol”
(common positive), although, WITH additional components and a dielectric
strength suitable for the running voltage (at least 25 V), additionally to the tantals
described above or Goldcaps or alone:
Bottom side (with optional external extension of the stay-alive capacitor)
Stay alive time 1 - 2 sec!
Bottom side of type MS580N18G
(WITHOUT Tantals on the decoder, but wires to the external stay-alive capacitor).
Two connected Goldcaps are delivered with the package, they should be
soldered to the open ends of the wires. OBSERVE THE POLARITY (+/-)!
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