3 ms·
I have a 5V-2A phone charger which whines. So it can happen even on low-powered devices.
by 21 8y ago
I have a 5V-2A phone charger which whines. So it can happen even on low-powered devices.
- jtbayly 8y agoYes, I have one, too. I can hear it from across the room on a quiet night. My wife thinks I'm crazy because I often go to unplug it, but she can't hear it.