![Why do some AC adapters and power supplies generate a whining noise, and what can I do about it? - Super User Why do some AC adapters and power supplies generate a whining noise, and what can I do about it? - Super User](https://i.stack.imgur.com/144ui.png)
Why do some AC adapters and power supplies generate a whining noise, and what can I do about it? - Super User
![be quiet! on Twitter: "Coil whine is the result of vibrating coil windings within electrically operated PC components - the resulting friction creates the metallic noise. Our power supplies do not generate be quiet! on Twitter: "Coil whine is the result of vibrating coil windings within electrically operated PC components - the resulting friction creates the metallic noise. Our power supplies do not generate](https://pbs.twimg.com/media/FAhf9nbX0AEutEx.jpg)
be quiet! on Twitter: "Coil whine is the result of vibrating coil windings within electrically operated PC components - the resulting friction creates the metallic noise. Our power supplies do not generate
![Coil whine: Coil noise or coil whine is a phenomenon in electronics which produces undesirable audible sound. Mainly caused by the transformation of electricity… Coil whine: Coil noise or coil whine is a phenomenon in electronics which produces undesirable audible sound. Mainly caused by the transformation of electricity…](https://i.pinimg.com/736x/30/6d/5f/306d5fffa05534a9ae54542e5aeaa915--communication-electronics.jpg)