Subject:
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Re: Power to RCX
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Thu, 14 Feb 2002 06:39:10 GMT
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Viewed:
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2964 times
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On Wed, 13 Feb 2002 12:24:17 GMT, Juergen Stuber <stuber@loria.fr>
wrote:
> Jetleb@Netcom.ca (Matthias Jetleb) writes:
> > d) the adapter must not produce more than 12V. The motor
> > controllers aparently have a 12V maximum and I haven't found any
> > evidence of a regulator for them.
>
> Putting a regulator in front of the motor controllers would
> be utter nonsense IMHO.
Utter nonsense until you destroy the controller itself. Remember,
while the Lego motors can take a fairly substantial voltage without
being destroyed, the same is not true of the motor controller within
the RCX. There is a voltage limit for it. I've tested my motors (well,
one of them anyway) up to 20V for brief periods. I've never tested one
to the point of failure, so I don't know what they actually can take.
The data sheet on the controller (http://www.sploids.com/10402.htm
and announced here: http://news.lugnet.com/robotics/?n=17203)
indicates a maximum of 12V (IIRC). Presumably the chip could take a
bit more than this before self destructing, but I leave it to you to
test it to the point of failure and let the rest of us know.
Matthias Jetleb
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Message has 1 Reply:
 | | Re: Power to RCX
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| (...) Yes, but any regulator would convert power uselessly into heat, probably too much if you use a much higher voltage and draw some current. It would be better to use higher voltage motor controllers directly (if they exist). And of course this (...) (23 years ago, 14-Feb-02, to lugnet.robotics.rcx)
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Message is in Reply To:
| | Re: Power to RCX
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| (...) Putting a regulator in front of the motor controllers would be utter nonsense IMHO. (...) Plus the data sheet of the motor controllers. Jürgen (23 years ago, 13-Feb-02, to lugnet.robotics.rcx)
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