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. wlevak@sdf.lonestar.org SDF Public Access UNIX System - http://sdf.lonestar.org Message was sent through the cbm-hackers mailing listReceived on 2012-02-03 07:00:03
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