Re: 110V to 220V

From: Didier Derny <>
Date: Mon, 11 May 2015 17:23:54 +0200
Message-ID: <>
on the very old CBM-II  the 50hz, was coming directly from the AC frequency
I saw some PSU with the chip used for the 50hz just burnt giving
a cbm II apparently with a  non working keyboard

(I had to fix one)

On 11/05/2015 17:20, Christian Dirks wrote:
> Am 11.05.2015 um 13:00 schrieb MichaƂ Pleban:
>> Good observation! I think the only problem will be the TOD of the
>> CBM-II's will be off, I can live with that.
> I think the 50 Hz signal from the CBM-II PSUs is generated by a timer,
> so it would be indepented from the mains frequency.
> Accordingly, there are no 50 / 60 Hz ROMs, like the PET editor ROMs.
> Christian

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Received on 2015-05-11 16:00:42

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