Ask HN: Why is coil whine in electronics so prevalent?

45 points

4 years ago

I'm talking about the whine, buzzing and similar noises. Here's an explanation of how they happen: https://www.youtube.com/watch?v=4D6PKusyvUU.

Now, I've heard of some simple DIY remedies that work, like putting glue in/around the inductors.

So, I want to know why this doesn't get properly fixed in the manufacturing process. Because nobody cares? Is it too costly? I wouldn't mind paying a small price premium for a product if there was a guarantee of no coil whine.

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