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 Robotics / 3170
3169  |  3171
Subject: 
Re: AC Adapter Specs?
Newsgroups: 
lugnet.robotics
Date: 
Mon, 25 Jan 1999 01:31:25 GMT
Original-From: 
Sam Edwards <sam_guy@geocities.#AntiSpam#com>
Viewed: 
1006 times
  
I don't want to tread on anyones toes, but.......

I agree that the current rating cannot be too large for a regulated • supply,
but for an unregulated supply this is not the case.  The Maplin catalogue
has this to say about an Unregulated 800mA power supply:

"The unit is not stabilised and therefore at low current drains, the • voltage
can approach double the full load voltage"

Jaspers suggestion of 800mA may well be fine, but I'd be very cautious • about
connecting my RCX (or anything else) to an unregulated supply with a • large
current rating.

Apologies if this only confuses matters, but I thought I'd better add a • word
of caution.


Jim
O.k. Now I'm starting to be a little concerned.

Not to dispute what anyone is saying but I've been hearing a lot of
variations to this question. Has anyone found specifications that Lego
has posted anywhere about the recommended adapter for the RCX? Has
anyone contacted The Lego Group about it? I've been searching every
possible resource but I have yet to find any information about it.

I also find it odd that Lego didn't supply an adapter with Mindstorms or
that their web page does not provide specs for it.

It may seem like a trivial concern but if there is even the slightest
chance of frying a $100 RCX with a $10.00 adapter, I think it's worth
getting the proper specs.


Pete



I have successfully run (and not fried) the RCX with a 9v 300mA adapter.
Works fine.

----------------------------------------------------------------------------
---------------
                             Sam Edwards

"On the keyboard of life, always keep one finger on the escape key."

--
Did you check the web site first?: http://www.crynwr.com/lego-robotics



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