What does "FB" mean? I can only guess it's some kind of protective device because of F, like with FU for fuse.
Is there any comprehensive online guide for such kind of symbols?
\$\begingroup\$
\$\endgroup\$
3
-
1\$\begingroup\$ Can you provide an example schematic? \$\endgroup\$– RenanJul 11 '13 at 14:39
-
1\$\begingroup\$ This symbol was on power source board. The device itself is small black ("metallic") cylinder without any visible signs on it. There were 3 of them. \$\endgroup\$– Roman SusiJul 11 '13 at 14:42
-
\$\begingroup\$ Can you provide image? \$\endgroup\$– Always ConfusedJul 1 '16 at 19:18
Add a comment
|
\$\begingroup\$
\$\endgroup\$
1
From your description, sounds like an abbreviation for Ferrite Bead.
answered Jul 11 '13 at 14:50
-
\$\begingroup\$ There is no other explanation. Its magnetic, resistance is minimal in both directions, appears among jumpers, color is right. And it is also protective device. Thanks. \$\endgroup\$ Jul 11 '13 at 14:55
\$\begingroup\$
\$\endgroup\$
FB is the designator for a ferrite bead. A FB acts a lot like an inductor, in that it filters out AC, and they slow transition of DC signals.
Best list of designators I've run across is in Wikipedia.
