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What is this power adapter for?

liamur

Active member
Title says it all...but I'm thinking it's for a Powerbook.
 

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AndyO

Well-known member
7.5v 2amp - if nothing else, that looks a lot like a PowerBook 100-series adapter. Or at least the black and white and greyscale models - I think the color ones were 3amp.
 

liamur

Active member
Thanks. I got it for free, and I figure I'll keep it, as I want to own a 68k PowerBook at some point. If only I had the money for that 180c over on Trading Post...
 

k24a1

Well-known member
I think almost all PBs take 24V, but I could be dead wrong. Sure isn't a yo-yo, and you wouldn't easily find one for free. /hj
 

AndyO

Well-known member
I think almost all PBs take 24V, but I could be dead wrong. Sure isn't a yo-yo, and you wouldn't easily find one for free. /hj

With the exception of the PB 100 (which I don't know about) and the 190 (which wasn't really a 100-series model anyway), I think the 100s all run on 7.5v. And even though these old Apple power adapters aren't all that rare, new replacements can be had on Amazon (and elsewhere) for under $10. I use one each on my 145B and 180.
 

Johnnya101

Well-known member
If you want to use it, keep in mind that you should really recap it. I think almost all of them are starting to fail by now.
 

liamur

Active member
If you want to use it, keep in mind that you should really recap it. I think almost all of them are starting to fail by now.
Never thought of recapping a wall wart before. Makes sense.

How do you open it? Crack the seal and hope it goes back together?
 

Johnnya101

Well-known member
Pretty much, yeah. I forget what I did with mine a few years ago. Think I had to cut the seal with a saw/blade? It's going to be a bit of a hack job unless you really go slow and take your time. Someone else may have better tips.

I think the caps in these really affect the output voltage. If you search this forum, I'm sure there is more info.
 
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