What is cool whine and how can it be decreased?

Question

I’ve seen a lot about “coil whine” over the years, referring to laptops mostly, and a lot more complaints more recently.

Is this bad manufacturing and design?

How can it be alleviated?

In: 1

Answer 1

Coil whine is a high-pitched noise that is caused by electrical current flowing through the coils of a laptop’s power supply. It is usually caused by components vibrating due to the current and can be heard when the laptop is in use. It is often caused by poor manufacturing and design, as components can be poorly soldered or not properly secured. It can also be caused by components running at higher frequencies than they were designed for. To reduce coil whine, it is important to ensure that components are properly secured and that the laptop is running at the manufacturer’s recommended frequencies. It is also important to ensure that the power supply is of good quality and that the laptop is running at the correct voltage.