What electronics component is this?

Question

amania_r · Accepted Answer

As others have said, it's an RF choke, used to block parasitic RF. This component can't fail (unless there's a dry solder joint)

? · Answer

It looks like 2 ferrite beads.  Inductors.  Chokes.

Steven · Answer

https://tttapa.github.io/Arduino/MIDI/Chap02-MIDI-Hardware.html

異域秦後人 · Answer

THIS IS A RF CHOKE TO BE USED TO BLOCK UNWANTED SPIKES.

qrk · Answer

Looks like two ferrite beads strung in series.

billrussell42 · Answer

what I see is part of a printed circuit board with a metal piece attached, which has two holes in it. The PC board has a transistor on the left, several resistors, several strange black components, and what appears to be a metal piece, perhaps a transformer.

the black components are a bit blurry.... except for the wires soldered to the top, they could be capacitors.

re other answers, yes, I see now that they are ferrite beads. large ones.

daniel g · Answer

I see several, a transistor, a couple 1/4 watt resistors, and what looks to be a pen, pointing to ferrite chokes. a heavy loop of solid wire for current, with ferrite beads to make a low inductance choke.
(power supply circuit perhaps)

Jim · Answer

That's weird I'm not sure!
- If 3 wires on their bottom they are transistors. Transistors are sometimes 'jumped'.
- If 2 wire, my best guess is they are capacitors, especially since I think I see a "-" sign and capacitors are directional (and resistors are not).
But I gotta say, I've never seen a jumper quite like that!!!

What electronics component is this?

8 Answers