68kMLA Classic Interface
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| Click here to select a new forum. | | Power Conversion Question 120 to 240v AC | Posted by: techstep on 2025-08-01 23:54:35
I have a Mac Plus in my collection that was originally sold in Europe. Thus, it has a 240v compatible PSU. I'm in the US, and here the standard voltage is 120v.
I bought this converter on Amazon, as I wanted to 1) try out the computer but 2) keep the internals original
When I read the manual, I realized this only converts voltage, and doesn't adjust the frequency. EU is 50hz, and US is 60hz. Is this going to be a problem? Are there any other recommended solutions besides swapping out the analog board?
EDIT: Oops, this can go in the Lounge, doesn't need to be under 'Conquests', although I did get this mac recently 🙂 | Posted by: cheesestraws on 2025-08-02 00:07:40
It's a switch-mode power supply in there, so frequency really doesn't matter. I do the opposite for a couple of machines with 120V PSUs. | Posted by: RetroTheryboy on 2025-08-02 00:16:06
The 240v version of Mac Plus is using the international version of the analog powersupply board which can be converted to 110v with only a jumper wire. It's marked on the board where to do this , if you don't mind opening the Mac. | Posted by: bibilit on 2025-08-13 07:51:55
Yes i agree with RetroTheryboy, most are the International type and are clearly stated that way, so a jumper wire and you are done. | Posted by: techstep on 2025-08-15 23:59:38
Thanks everyone! We're all set and the mac works! Now just need to rebuild the floppy drive. | | 1 |
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