This is part of the audio board of my teac a-l700p amp. I know what resistors and caps look like, but I have no idea what the long slinder gray component is. Is it a resistor in disguise or something else? The board labels it as BD86 or BD85. Thanks for your time in this matter, Kevin.
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Mr. Evil has it right...
We use these a lot in the products I work on, as RF filters. We mostly use SMT versions, though.
Mr Evil said:
We use these a lot in the products I work on, as RF filters. We mostly use SMT versions, though.
Do ferrite beads affect the sound in a good way or bad way? I am just curious since tripath never mentions it in their spreadsheet.
No components are inherently good or bad for the sound; it depends how they are used. They will look pretty much like a plain piece of wire at audio frequencies, so they shouldn't do any harm, but applied appropriately they will keep high frequency nasties out (or stop them escaping, if they are internally generated), which is of particular importance for switching amps.
Yes, they are ferrite beads, but they do not create a small inductance to filter RF. Some of you guys need to read up on the basics................
Jocko
Jocko
ferrite beads
What else are they doing? A short explanation would be very kind. 🙂Jocko Homo said:
I'd say some of them would indeed build a small inductor but that is depending on the ferrite materials used.
Most work by introducing magnetic losses at RF.
Regards
Charles
Most work by introducing magnetic losses at RF.
Regards
Charles
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