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 Robotics / NXT / 957
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Subject: 
Re: The Future of Trains
Newsgroups: 
lugnet.lego, lugnet.robotics.nxt, lugnet.trains
Date: 
Mon, 8 Oct 2007 15:11:26 GMT
Viewed: 
9300 times
  
In lugnet.lego, Brian Davis wrote:
In lugnet.lego, Philippe Hurbain wrote:

A practical value is about 1A - NXT motor driver itself
limits the current around 1A too.

Ah, thank you - so running two stalled train motors would exceed the NXT output,
but running one train motor up to a stall conditions should be fine. Out of
curiosity, along with the output limitations on the NXT (1 A) and RCX (500 mA),
does anyone have the output limitations (voltage and current) on the train
transformer?

The linear regulator inside is a 1.5A version if I remember well, but I may be
wrong. Cross posted to lugnet.trains trying to get train guru opinion...

Philo



Message has 2 Replies:
  Re: The Future of Trains
 
(...) At BayLTC we usually run four train motors on one loop using stock Controller with a 1.2 amp wall wart. Bruce (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
  Re: The Future of Trains
 
(...) The Australian LEGO wall wart is marked 10V @ 7VA on the secondary. I don't recall all the stuff I learnt about the relationship between VA and W, but that seems to me to indicate about 0.7A. I believe this generally reduces as load increases, (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)

Message is in Reply To:
  Re: The Future of Trains
 
(...) Ah, thank you - so running two stalled train motors would exceed the NXT output, but running one train motor up to a stall conditions should be fine. Out of curiosity, along with the output limitations on the NXT (1 A) and RCX (500 mA), does (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt)

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