Subject:
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Re: More juice out of the standard motors.
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 22 Mar 2001 04:42:17 GMT
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Viewed:
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466 times
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> However, I don't know how to get more than 9V out of the RCX. If you put
> 12V into the adapter, you still only get 9V out of the motor ports.
Have you actually tried this? I've taken both my RCX's (1.0 & 2.0)
apart, but, while there is a 5V regulator for the MCU, I couldn't see
any regulator for the motor outputs. This doesn't mean it isn't there,
just that I couldn't find it if it is.
I haven't tried running the RCX 1.0 from an external supply yet. I'm
just assuming that the input voltage appears at the output less 2.4V
for the bridge rectifier and probably another volt or so across the
MLX10402 DC Motor Driver. Of course, that would leave around 9V
wouldn't it?? I guess I answered my own question. I still don't think
the motor outputs are regulated though.
Matthias Jetleb
VA3-MWJ
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Message has 1 Reply:
 | | Re: More juice out of the standard motors.
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| Yes, I tried it. I don't know how the internals of the RCX work; all I know is I put 12V in, and got 9V out. -- Mark Haye, mhaye(at)tivoli(dot)com "Matthias Jetleb" <jetleb@netcom.ca> wrote in message news:3ab97dfc.301576...net.com... (...) (23 years ago, 23-Mar-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: More juice out of the standard motors.
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| I used to regularly drive LEGO 9V motors at about 12V with no observed damage. I assume the increased power/torque would be proportional to the voltage, i.e. 33% more voltage gets you 33% more power/torque. However, I don't know how to get more than (...) (23 years ago, 15-Mar-01, to lugnet.robotics)
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