Subject:
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Re: Questions from a trains idiot
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 19 Nov 1999 22:37:35 GMT
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Viewed:
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1264 times
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In lugnet.trains, Larry Pieniazek writes:
> Frank Buiting wrote:
> >
> > In lugnet.trains, Richard Marchetti writes:
> > > Hey Y'all:
> You can run more than one. As you add more, you get a slow down,
> especially on grades. I have run 4 successfully. Very slow. Running 5
> trips an internal reset and the speed reg shuts down (it thinks there's
> a short circuit).
It's no short cirquit,but an overheated regulator, who reduces the output
voltage with increasing heath.
Using a larger heathsink on the regulator can reduce this problem.
The used regulator 'chip' is a LM317T, capable to deliver 1.5 Amp. maximum, but
the transformer can't deliver this (maximum 0.7 Amp. - 10 volts / 7VA).
Using a transformer with a higher Amp. rate ( example 1.5A /10 volts)reduce
the problem of slowing down when running more than one train motor.
Note also that the used rectifiers are rated at 1 Amp. (1N4001 ... 1N4007)
you have to let it cool off and it works again.
>
> --
> Larry Pieniazek larryp@novera.com http://my.voyager.net/lar
> - - - Web Application Integration! http://www.novera.com
> fund Lugnet(tm): http://www.ebates.com/ ref: lar, 1/2 $$ to lugnet.
>
> NOTE: Soon to be lpieniazek@tsisoft.com :-)
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Message is in Reply To:
 | | Re: Questions from a trains idiot
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| (...) Yes. (...) It varies. 3225 comes without track or a regulator. 4565 comes without a regulator but with track. 4559 comes with both. 4561 comes with both. There is a version (europe only, I think) of 4561, numbered 4560, that comes without a (...) (25 years ago, 19-Nov-99, to lugnet.trains)
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