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Subject: Re: Smallest component to step down 240VAC to 18VDC?
Date: Wed, 9 Oct 2002 03:04:31 -0500
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can't you get a small enough transformer? what do they use for the adapters
that come with the laptop?
"Paul Burke" wrote in message
> The little lost angel wrote:
> > Are transformers with a AC->DC circuit the only way to step
> > down mains AC to low DC voltages? Are there no small IC that can
> > convert 240V to something like 16V to 24V range?
> > Reason being... I lost my 16V 4.5A laptop charger and need to
> > make one small enough to pack in my bag. :(
> > The wall wart(?) I'm using now is way too big for that.
> For a charger you'll have to handle the thing, you can get fingers
> across the power pins- you MUST have isolation. A transformer in the
> circuit somewhere is the only acceptable way. Don't even think of trying
> an alternative.
> Paul Burke
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