In article ,
Meat Plow wrote:
On Mon, 31 Dec 2007 21:27:39 -0500, mm wrote:

It seems I mailed home the powersupply cord and transformer for my IBM
ThinkPad 600E, instead of putting it in my suitcase.

So I need something to use until the package I mailed comes.

It says 15.5 to 17 volts DC, 56 watts, and I have a whole bunch of
possible adaptors to use, but if I have to make one from a transformer
and diodes, how much ripple filtering would I likely have to do to
simulate the original power supply. None at all? So many microfarads
worth before and so many after the diodes?

Your basic regulated full wave bridge supply with a 470 uf cap across the
output will work just fine. Make sure it can deliver a steady 2 amps.

That seems a bit low to me. I'd make it 6,800µF for 2 amps. But 56 watts
even at the high end of voltage is over 3 amps - not 2.

--
*Time is fun when you're having flies... Kermit

Dave Plowman London SW
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