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Beppe Giannini
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1,696 Posts
Hi Narcis,

you mean that for the second year running Alcorcon and St.Celoni are on the same week-end ?
I thought we Italians had the monopoly for internecine rivalries !!!

Ciao
Beppe
 

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715 Posts
QUOTE Nico,
AFAIK Davic uses 2 x 5 A power supplies (one providing +18 V and the other - 18 V)

Nico, XLot

Davic runs the cars in DC, right? Why would one PS be running -18...unless the chips are built to look for that side of the sine wave and run the motors with it
?

I would have been satisfied with "2 18V PS's". was the "-" sign a typo? I sure hope so...

Thanks

-Maltese
 

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Beppe Giannini
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1,696 Posts
No, it's not a typo - I got it from the horse's mouth (David Laurent) - but it's nothing to be alarmed about

In DCC, power / message is a +/- 18 V (or so) square wave : it just depends on the internal circuitry of the base unit whether you obtain it from two opposite polarity PSs or a single, double ampacity PS

So, this really means that 15 cars, with NC1 / NC2 motors, are happy with 10 A - what's important is that PSs should be stabilized (not wall warts)
 
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