Subject:
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Re: Basic Train Electrical Questions
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Newsgroups:
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lugnet.trains
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Date:
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Sat, 14 Dec 2002 09:05:18 GMT
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Viewed:
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1532 times
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I wrote an artive on powersupplies some time ago.
Find it on www.hot.ee/sonnich/lego/ under modifications.
There are link to 2 other pages describing that, electrical details and
power changes.
BR
Sonnich
Frank Filz <ffilz@mindspring.com> wrote in message
news:3DFA764F.D7ABD2B3@mindspring.com...
> Do we have the answers to these in the FAQs? This question comes up
> alot...
>
> Jan-Albert van Ree wrote:
> >
> > Justin Pankey wrote:
> > > Hi All, I've had a HUGE town display with train, monorail, etc.; but • am
> > > now curious about some issues. For instance...
> > >
> > > How many motorized engines can be hooked together to maximize power, • but not
> > > over-burden the controller?
> >
> > 2 is the max with the default powersupply.
>
> Hmm, I haven't done pull tests, but we've successefully run at least 4
> motors on a single controller without overheating.
>
> > > Can you hook up more than 1 controller to a track for added power • without
> > > harming the engines?
> >
> > Won't harm the engines, but possibly damages the controllers. Not
> > recommended. Better is to replace the wall outlet power supply by a
> > heavier one, the controller can handle a larger amount of current. That
> > way up to 4 train engines can be powered.
>
> I'm not sure using a larger wall wart gets you much, but I'm not
> familiar with all the guts. I'm guessing that the overload protection is
> current based though, which means a larger wall wart doesn't help.
>
> Connecting the outputs of two controllers has almost no risk. A real
> power supply (idealized as a constant voltage supply) always has
> resistance in series with the power supply. This resistance means you
> never have a real short. Besides, if too much current started to flow
> (because you had the two controllers set to opposite extremes of the
> output range), the overflow protection would kick in.
>
> Frank
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Message is in Reply To:
 | | Re: Basic Train Electrical Questions
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| Do we have the answers to these in the FAQs? This question comes up alot... (...) Hmm, I haven't done pull tests, but we've successefully run at least 4 motors on a single controller without overheating. (...) I'm not sure using a larger wall wart (...) (22 years ago, 14-Dec-02, to lugnet.trains)
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