Subject:
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Re: Powering motors from the mains
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 18 May 2002 03:42:20 GMT
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Viewed:
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2324 times
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Those who can use a soldering iron, and know their anode from their
cathode, could build something like what I did:
http://members.rogers.com/swatsons/power4small.jpg
The black box is a 7809 9v positive voltage regulator. See the data
sheet here:
http://www.fairchildsemi.com/ds/KA/KA7809.pdf
I used a 12v wall wart to power the whole thing. It works very well too,
this is how i powered my entry in my last robotics competetion.
Jonathan Spitz wrote:
> I have the RCX 2.0 and it doesn't hace any power connector. Lego should have
> thought about that and at least sell a special adapter. Anyway, they didn't.
>
> ----- Original Message -----
> From: "Larry Pieniazek" <lpieniazek@mercator.com>
> To: <lego-robotics@crynwr.com>
> Sent: Friday, May 17, 2002 9:53 AM
> Subject: Re: Powering motors from the mains
>
>
>
> > In lugnet.technic, Steven Lane writes:
> >
> > > I find batteries a pain, especially as there output isn't constant over
> > > their lifetime, therefore I'd love to be able to power my motors from the
> > > mains. I'd like to know what methods their are are doing this. I'd prefer
>
> a
>
> > > purist option but I do know which end is the dangrous one on a soldering
> > > iron. It also has to work in the UK, home of the three pin plug.
> >
> > Purist approach is to use a 9V train speed reg and LEGO(r) wires from the
> > speed reg to your motor(s), possibly through the polarity reverser switch
>
> to
>
> > give control. The speed reg is powered from a wall wart trafo so if you
>
> buy
>
> > a UK train set or UK used speed reg (should not be too hard to come by) or
> > even pay LD's high price for a new one, you should be all set. The UK wall
> > wart will have the appropriate 3 pins for your funky mains points and will
> > be 220v compatible.
> >
> > The wall wart from a speed reg can also power an RCX that has the power
> > connector (1.0 but not 1.5. I do not know if they put it back for 2.0 or
> > not) if you want to go that way...
> >
> > Hope that helps.
>
>
>
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Message is in Reply To:
 | | Re: Powering motors from the mains
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| I have the RCX 2.0 and it doesn't hace any power connector. Lego should have thought about that and at least sell a special adapter. Anyway, they didn't. ----- Original Message ----- From: "Larry Pieniazek" <lpieniazek@mercator.com> To: (...) (23 years ago, 17-May-02, to lugnet.robotics)
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