Subject:
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Re: A/C Adapter for RCX 1.0
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Wed, 31 Mar 2004 02:01:58 GMT
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Viewed:
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3578 times
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In lugnet.robotics.rcx, Ross Crawford wrote:
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You can safely power it with a DC supply, however I wouldn’t recommend
leaving it on for a long time, as there have been reports of the rectifier
burning out. If that happens, you should still be able to use batteries. You
could also reverse the polarity of the input voltage, but that would probably
burn out the other half of the rectifier eventually.
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When a fellow MichLUGer brought up the question of hooking up an external power
supply to a 2.0 RCX, a lot of these interesting little facts popped up. From
the way it sounded, the RCX has a maximum amperage draw, and each side of the
bridge rectifier is designed to handle half of it. If that’s true, it’ll work
fine with DC power as long as you don’t exceed half of the maximum draw. As you
increase your draw from that point, you increase the likelihood that you’ll burn
it out. The problem isn’t so much figuring out what the max draw is, as it is
figuring out what half of the max draw is and making sure you don’t exceed it
by much. Given the secondary market price on a 1.0 RCX, it sounds like it’s a
lot cheaper to just suck it up and buy the AC adapter.
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Message is in Reply To:
 | | Re: A/C Adapter for RCX 1.0
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| (...) The RCX has a bridge rectifier inside, that converts the AC to DC. It also has a voltage regulator that allows it to take a fairly large input voltage range. You can safely power it with a DC supply, however I wouldn't recommend leaving it on (...) (20 years ago, 31-Mar-04, to lugnet.robotics.rcx, FTX)
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