Buzzy electronics

[stolzy]

What causes that buzzy sensation that you get from some laptops and other portable devices when you run your fingers over them. They only do it when they're plugged in.

I know I shouldn't be stroking them, but I have a new MacBook Pro and I can't help it.

 

[Deleted account 190920001]

It will either be the hard drive or a fan assuming a CD isn't in there. Power management turns everything down when not plugged in so drives and fans spin slower to save the battery.

 

[cookie]

it's a lack of earth on apple products.

some do it, some don't. my ipad 4 does it very noticeably, my old ipad didn't, but mrs cookie's did. don't think my macbook does it.

should go away if you can get an earth on the charger. most apple chargers have little metal strips inside the slots where the plug adaptor slides in, this is the earth, but the UK plug itself is plastic, so it's not connected.

some macbook charger extension leads have the earth connected via a metal toggle. fit one of these and the buzzing should go away.

 

[stolzy]

it's a lack of earth on apple products.

some do it, some don't. my ipad 4 does it very noticeably, my old ipad didn't, but mrs cookie's did. don't think my macbook does it.

should go away if you can get an earth on the charger. most apple chargers have little metal strips inside the slots where the plug adaptor slides in, this is the earth, but the UK plug itself is plastic, so it's not connected.

some macbook charger extension leads have the earth connected via a metal toggle. fit one of these and the buzzing should go away.

Thought it would be something like that, especially since the MacBook has neither CDROM, fan or harddrive.

Interestingly the French MacBook charger has no earth (two pins only)

 

[cookie]

it's a weird phenomena. there's a load (100s) of posts and theories about the subject on apple's discussion forums.

 

[Fanum]

 

[cookie]

it was always only a matter of time