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(...) 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 (...) (25 years ago, 25-Jan-99, to lugnet.robotics)
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| | Re: AC Adapter Specs?
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(...) 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 (...) (25 years ago, 25-Jan-99, to lugnet.robotics)
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| | Re: AC Adapter Specs?
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I use a LEGO 9V train transformer on my RCXs .... and haven't had any difficulty. Keep in mind that LEGO works very hard to make their stuff "child proof". - - - Nick - - - (...) -- Did you check the web site first?: (URL) (25 years ago, 25-Jan-99, to lugnet.robotics)
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| | RE: AC Adapter Specs?
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To make things things simpler, you can purchase an adapter (and a spare RCX, you deserve it)at Pitsco Lego Dacta: (URL) Info: RCX, Robotics Command System #W979709 $110.00 Adapter #W979833 $25.00 To order (USA only), call Pitsco LEGO Dacta at (...) (25 years ago, 25-Jan-99, to lugnet.robotics)
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| | Re: AC Adapter Specs?
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Rich Thompson wrote in message ... (...) Dacta: Please, somebody do this and tell the rest of us what the adapter really is! BTW: I use a 9VAC 500ma wall wart from an old modem. Seems to work OK. (25 years ago, 25-Jan-99, to lugnet.robotics)
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| | Re: AC Adapter Specs?
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The LEGO "toy transformer" outputs "12VAC 7VA" -Ben (...) (25 years ago, 25-Jan-99, to lugnet.robotics)
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| | Re: AC Adapter Specs?
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I hooked up my amp meter to the lego motors that come with the Mindstorm and they were drawing <= 100 ma. If my readings were correct I would think any 9-12V transformer that is greater than 300ma would work with the Mindstorm. It is not the current (...) (25 years ago, 25-Jan-99, to lugnet.robotics)
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| | Re: AC Adapter Specs?
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(...) That explains why the internal CyberMaster motors when running at speed 1 sometimes make the unit tremble fast, almost like if the motors were being turned off and on at high speed. The effect is more noticeable when the batteries are weak and (...) (25 years ago, 25-Jan-99, to lugnet.robotics)
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