| Electronics > Beginners |
| Do inductors sing in old age? |
| << < (3/4) > >> |
| CJay:
Yes, they can do, I've also heard inductors/transformers 'singing' because of other components going faulty (electrolytics usually), changing those bits silenced the inductors |
| NivagSwerdna:
I attached the clock to a lab power supply and gave it 12v and then adjusted the voltage down. Interestingly at about 11v it is considerably quieter and then gets louder again towards 9v. I also notice that it is quieter when not under load. I really don't remember it being this noisy and putting my ear close I can perceive what might be described as fizzing or at a stretch crackling. Perhaps I should preemptively replace the input electrolytic? (Which is a PITA since it is SMD flavour) Just checked my schematic and I'm pretty sure I ended up with... "EEEFTH101XAP - SMD Aluminium Electrolytic Capacitor, Radial Can - SMD, 100 µF, 50 V, 0.34 ohm, FT Series" on the input side. That looks like a good choice... not sure I have any spares. |
| soldar:
I had an old hard disk that would sing the Travi-ATA. The newer ones do the Travi-SATA |
| CJay:
Could be input or output, could be both, could be neither and it could be a loose winding on the inductor as well. |
| Mechatrommer:
yes they do sing old or new... if you have more time to kill you can build something useless and have a life by getting 50K likes, and possibly participate in america got talent or hope george lucas will hire you and then have some stories to tell your grand children. |
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