Re: plus4 power supply

From: Julian Perry <>
Date: Fri, 21 Sep 2012 09:50:03 +1000
Message-ID: <>
Hello Gerrit,

Friday, September 21, 2012, 1:37:26 AM, you wrote:

> On 09/20/2012 02:31 PM, Julian Perry wrote:
>> Hello Hegedūs,
>> Thursday, September 20, 2012, 9:39:20 PM, you wrote:
>> When replacing my C64 power supply innards with a regulated switchmode
>> version, I noted a voltage drop of 0.2V across the power lead into the
>> C64 under load - so the PSU needed to output 5.2V, to have 5V
>> available at the C64. (I adjusted it by measuring the voltage of the
>> 5V rail on the PCB, with the C64 operating).

> Which one did you use? has a perfect fit for the old C64
> and Plus/4 supplies for less than 5 Euros: Astrodyne OFM-0101 (5V,2A).
> Order nr. is 350 765. If you clean out the empty space in the PSU 
> completly, the PCB fits perfectly.
> It's also adjustable, so you can have the 5.2V if you need them.

I used a 3A, over-voltage, over-load and surge-protected one from Element14
It's (too) pricey, but did the job nicely.

I wrote up the whole business on

> Again: You need to work on 230V for this, don't, unless you know what
> you're doing.


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Received on 2012-09-21 00:00:32

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