Black tons
Paul Förster
... just a small question: What are the black tons on the board
labelled FB2, FB3 and FB4? Are those things diodes? From the schematics
this definitely becomes not clear. Can someone enlighten me please?
--
cul8er
Peter Schepers
Paul F�rster <paul.f...@gmx.net> wrote:
>Hi,
>
>... just a small question: What are the black tons on the board
>labelled FB2, FB3 and FB4? Are those things diodes? From the schematics
>this definitely becomes not clear. Can someone enlighten me please?
FB - Ferrite Bead, used for noise suppression, like a coil.
PS
Paul Förster
On 2009-12-20 15:23:07 +0100, sche...@ist.uwaterloo.ca (Peter Schepers) said:
> FB - Ferrite Bead, used for noise suppression, like a coil.
... ah, good. That helps and explains some effect I have had. The
effect was that a display connector was connected between the ferrite
bead and the RF modulator. The display showed a few distortions,
nothing serious and not making the thing unusable but being somewhat
annoying after prolonged use. I moved that connection beyond the
ferrite bead as one would expect it to be connected and the distortions
appear a lot less now. So I take it that the RF modulator side of the
video connection, i.e. "before" the ferrite bead, produces some noise
which is filtered out this way. At least I *know* now why the image is
better and not have to speculate anymore. :-)
Thanks very much. :-)
--
cul8er