Subject:
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Re: New page about #4548 Train Controller.
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Newsgroups:
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lugnet.trains
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Date:
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Sat, 27 Jul 2002 09:04:30 GMT
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Viewed:
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705 times
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Just remember to add a resistor in serie with the variable resistor, so the
total value never reaches 0.
Something like 4k7 + 22k variable resistor... ?
Steve Barile <steve.e.barile@intel.com> wrote in message
news:GzvKFx.8Fo@lugnet.com...
> I have been intesrted in this topic as well. Thanks for doing the • schematic
> work. I was thinking about about mounting a linear variable resistor aka
> Thumbwheel Trim Pot (see: http://www.meci.com/images/450-0233.GIF) on the
> PCB board opposite the power connector. (see:
> http://www.hot.ee/sonnich/lego/ 1st picture). Then drilling a small hole • in
> the plastic case (again opposite the power connector hole) so that a small
> screw driver and be used to adjust the Vmax output.
> SteveB
>
>
> In lugnet.trains, Sonnich Jensen writes:
> > Once upon a time (...) there was a discussion about the 4548 Train
> > Controller about how to limit output in order to limit speed of trains.
> > That inspired me to create a page describing the problems with the Train
> > Controller.
> > I have created a schematic of the Train Controller and added different
> > information about it on 2 new pages.
> >
> > You will find it all here:
> > http://www.hot.ee/sonnich/lego/
> >
> > Click on the "new" link. As always, LMKWYT.
> >
> > Suggestions are also very welcome. Especially if anyone knows more about • the
> > heat zink in it (how much power can it handle?)
> >
> > Leg godt
> > Sonnich Jensen
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Message is in Reply To:
 | | Re: New page about #4548 Train Controller.
|
| I have been intesrted in this topic as well. Thanks for doing the schematic work. I was thinking about about mounting a linear variable resistor aka Thumbwheel Trim Pot (see: (URL) on the PCB board opposite the power connector. (see: (URL) 1st (...) (22 years ago, 26-Jul-02, to lugnet.trains)
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