Subject:
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Re: Does anyone know how to modify a train controler?
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 26 Oct 2001 09:34:31 GMT
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Viewed:
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809 times
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In lugnet.trains, Sonnich Jensen writes:
> My solution was to add a resistor over them (picture later).
>
> Yes the lowest is 2.9V. By adding a resistor over them all makes i affect
> the higher settings more than the lower ones. This is right for less that
> 2.9V is not enough for the motor to move.
>
> And there is no danger by supplying 12V or more, unless the regulator is
> modifyed it can NEVER give more than 9V. So one can not speed up the trains
> this way.
>
> By using another transformer it should be considered that there is a loss in
> the regulator, I don't the datasheets for the LM317 handy, but guessing that
> 1.2 volts is lost in the controller.
>
> Also it depends a lot whether it is AC or DC.
> The regulator says that it needs 9-10V AC which is some 13-14V DC. So if
> ones transformer says 9VAC it makes no difference as it is 13V DC and a
> stepdown of 1.2V is 11.8V so it can still supply the full 9V.
> 9VDC would make maximim app. 7.8V. But it would also make it so, that the
> last steps will be the same.
> Therefore a resistor still uses the full adjustment possible.
>
> See you in 2 weeks
> Sonnich
Well, I want to modify mine to output a constant 9V for powering technic
motor gadgets (e.g. point motors). I've just got some polarity switches,
and I want to fit them on my controller.
I've been advised to wire up my own 9V regulator with a heatsink - I'll let
you know if it works.
Jason J Railton
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Does anyone know how to modify a train controler?
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| (...) My solution was to add a resistor over them (picture later). Yes the lowest is 2.9V. By adding a resistor over them all makes i affect the higher settings more than the lower ones. This is right for less that 2.9V is not enough for the motor (...) (23 years ago, 25-Oct-01, to lugnet.trains)
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