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Black
Gate (II)
Unconventional
BG-WK POWER TANK is born: suppresses noise completely!
Remove an unavoidable
self-interference occurred in a common power supply handles pulse: The most
important process for your set!
A lot kind of electronic equipment
which handles with pulse such as a television has a cathode ray tube imaging
display device inside.
Without exception, it has a horizontal fly back circuit for an electron-beam
deflection of fairly large voltage. In fact, this is the biggest source of
noise generation.
The noise invades other numerous circuits connected with a same power supply
directly, and self interference occurs inside because the noise is unexpectedly
larger than that of coming from outside.
(1) Removing
a harmful effect on picture quality especially for color reproducing circuit
While horizontal output pulse flies back, a large ringing power including odd
numbers harmonics generates. (See Figure 1)
This is the cause of noise generation, and the ringing power goes through a
power supply and hits other circuits directly.
It damages Y signals enormously that deciding the picture quality, and also
deteriorates the color signals of I and Q and the operation of a phase
detecting circuit particularly.
A conventional electrolytic
capacitor for smoothing noise is polarized, so it can smooth noise in only one
direction. The opposite direction is left uncontrolled, and makes the
performance of other circuits connected with the same power supply bad.
Then, to replace such a capacitor with non-polarized Black Gate, the noise has
vanished completely and picture quality has improved drastically because BG can
work in the both directions. Now, Black Gate has got much attention for the
perfect non-polarized operation of wide voltage range by even a single piece.
(2) The new
brand BG-WK, the revolutionary structure
This Black Gate looks like a
polarized electrolytic capacitor in appearance, yet it is entirely different.
The inside is asymmetrical and non-polarized structure which has two different
working voltages: the +pole is 200V and the -pole is 100V.
This is unconventional as well as
the most reasonable structure because when a pulse voltage at its peak 100V adds
to the ringing power that superposes on a driving DC voltage of around 130V that
is rectified by 100V power supply can be smoothed and bypassed as no
distortion, low loss, and ultra high speed. (See Figure 2)
At last, Jelmax has completed a
state-of-the-art BG-WK 200V 220uF: high performance and very efficient capacitor
for various characteristics in the same size as a conventional one.
Ordinarily, a ringing noise superposed on a conventional smoothing capacitor is
all under 100V, therefore BG-WK can eliminate the noise completely.
This is certainly the indispensable weapon against self-interference which HDTV
has to face in the near future. We are going to explain why is the capacitor a
power tank type in the next issue for a switching power supply.
(3) The
power increases a lost and the life becomes longer by several times
In a conventional capacitor, the reverse pulse is directly absorbed inside and
becomes loss power that would make the temperature of electrolyte rises.
It dries up faster and the life of the capacitor becomes shorter. TV monitors,
image receiving devices and PCs, all of them which are very frequently used
suffer much for this.
On the other hand, the inner loss of BG-WK is the only E.S.R. due to a
non-polarized structure, so the temperature rises just a little.
The electrolyte inside is consumed as less as 1/100 compared to conventional
ones. Therefore the power has increased and the life has become as much as 3 to
5 times longer!
We believe that these are wonderful new for TV stations that have to spend a lot
of money to maintain VDT, for companies using OA, and medical institutions using
high class medical equipment.
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venerd́ 20 giugno 2008
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