Swapping power supplies

I've no idea what the outcome would be, so why not colour-code the power supplies?

Jim

For the love of the *Gods* man, what are you doing?!

Jim

Does any of the documentation say what the specs of each are?

The transformers are very different sizes, so I presume different wattages. Connecting the MBP to the MB psu would therefore be contraindicated.

Other way around would be fine.

OTOH, the MB psu is 60W and I've never managed to push the laptop beyond 35W, so you'll probably be okay.

Cheers - Jaimie

65w MacBook & 85w MacBook Pro

Oh. Not the same then. I'd probably swap 'em around though.

If it were anybody else asking, I'd point out that Apple's engineers would have to really hate the people in Apple's warranty department to provide incompatible power supplies with identical connectors. I'd also point out that the 45W and 65W iBook/PowerBook power supplies had identical connectors and were interchangeable, despite different ratings.

But as it's you, just go for it dude. We all know they're gonna die young, so they may as well live fast.

Tim

In your case a definate yes.

My 60W MacBook supply is American, but I thought they were universal.

J

I don't think it matters - the MBP will just charge a little slower if you feed it with a MB PSU rather than an MBP PSU.

Paul

Actually looking, mines a 60w too, that'll teach me to work from memory. MBP definitely 85w though.

The rated wattage of a power supply is the maximum wattage that it would be happy delivering. What actually get delivered into the computer is only whatever the computer requests. If the computer needs 35W, it gets 35W, whether the psu is "85W" or "60W".

(this is _not_ a place where analogies of voltage as waterfalls is any use at all!)

Absolutely positively no problems there at all.

(for completeness sake, I should say that "60W" is a bit of oversimplification. What it really means is more like "40W max on the 12V line, and 20W on the 5V line". If you demand more than those per-line wattages, then the psu starts getting upset and squirting pus. My PC here runs off a 580W psu, even though it peaks at just 250W - because the 580W psu supplies 200W on the 5V line, which I need for these dual xeons)

Cheers - Jaimie

On Apr 26, 11:37 am, zoara wrote:

Will using a MacBook Pro power supply on a MacBook, or vice versa, cause any damage?

-zoara-

--
"I'm sorry, that's not a hair-related question."

SHUT UP YOU VAGINA-FACED WOMAN!!!!!

HAHAHA HAHAHAHA GO BLEED FROM YOUR MENSTRUAL CYCLE YOU DYKE

I BET YOU ARE A BUTCH DYKE , NOT A SEXY LESBIAN LIKE IN PLAYBOY

On Thu, 26 Apr 2007 22:43:03 +0100, zoara wrote:

I just realised that my statement was ambiguous; it's plugging the MacBook into the 85W supply that's possible. But from what you say above, I can see you must have understood what I meant.

Certainly did, and it's fine. I didn't even see the ambiguity, in fact.

... I was reading thedailywtf earlier, and a chap had posted a bit of buggy code with a - ho ho - infinite loop in, to catch the unwary. Which I couldn't spot. Turned out that he'd autocorrected the bug as he typed.

I do that a lot with my eyes, just don't see typos/thinkos sometimes. Until I press "send", of course.

Cheers - J

Been doing that for ages with no ill effect.

Cheers,
Ian

Give it a go. What harm could it do?

Joke of The Year
"...don't worry, I shan't be posting here again." - Sarah Balfour

Whereas I've just accidentally discovered that an 85W G4 Mini psu won't power on an Intel Mini (110W psu). How odd, given that it actually draws under 30W.

Cheers - Jaimie