Re: 110V 60Hz / 220V 50Hz power supply

From: didier derny <>
Date: Fri, 03 Feb 2012 09:33:57 +0100
Message-ID: <>
I've started to create a source for the french 8096 set of roms.
but it take time... I'm using the tools found in cc65


Le 03/02/2012 07:01, William Levak a écrit :
> On Wed, 1 Feb 2012, MikeS wrote:
>> No, it's not about the power supply in the 9090, but the 
>> "transformer"; some 220V to 110V converters are not really 
>> transformers but effectively switching 220V in/110V out AC power 
>> supplies that instead of nice clean sine waves can generate some very 
>> nasty spiked waveforms that are OK for steam irons, hair curlers etc. 
>> but can damage electronic equipment. Then again, maybe the regulator 
>> just failed by coincidence.
> Transformers shift the phase of the voltage relative to the current.  
> the typical Commodore power supply is a transformer with filter 
> capacitors. Adding another external transformer may produce enough 
> phase shift that the filter capacitors no longer do an adequate job.
> SDF Public Access UNIX System -
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Received on 2012-02-03 09:00:10

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