Subject:
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What AC adapter to use for RIS 1.0?
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 22 Feb 2001 05:51:10 GMT
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Viewed:
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571 times
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I just got a second RIS, this one is the RIS 1.0 with the power adapter
input. I tried to find that AC adapter on S@H , but couldn't find it.
There is not even any info about it in the RIS 1.0 itself.
All the info I found was, that I need a 10V 7VA adapter for it.
Where can I find such an adapter?
RadioShack sells universal PA, but they have no 10V setting and most
adapters I can see have a mA or a A rating, e.g. 12V 500mA or a 7V 1.8A
Would a 9V adapter work? and what are 7VA in mA or A (I guess 1000mA=1A)?
And in case I could use a universal PA, what side is the positive (inside or
outside)?
Thanks for the help.
--
David
--
David
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Message has 7 Replies:
 | | Re: What AC adapter to use for RIS 1.0?
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| Hi, Seven VA stands for 7 volt-ampere. To arrive at the ma/A rating divide 7 VA by 10 Volts. In this case it will be 700 ma ( 0.7 Amp). I do not have the mindstorm, neither have I tried the 9 Volt adapter but in general a 9 volt adapter should work. (...) (24 years ago, 22-Feb-01, to lugnet.robotics)
| | | Re: What AC adapter to use for RIS 1.0?
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| There's usually somebody selling the original Lego adapters on eBay for about $18. I suppose that's highish compared to a Radio Shack 9v unit. He must have a case or so - I bought 2 and they've been on regularly for a couple months. While I haven't (...) (24 years ago, 22-Feb-01, to lugnet.robotics)
| | | RE: What AC adapter to use for RIS 1.0?
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| In a pinch - and if you don't mind spending some extra money - you can always by a train set like 4561 "Railway Express" for $129.99 or 4548 "Speed Regulator" for $41.99. Both are in stock at S@H, and include a suitable AC adapter. The first is also (...) (24 years ago, 22-Feb-01, to lugnet.robotics)
| | | Re: What AC adapter to use for RIS 1.0?
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| (...) Interesting point. I haven't run the RCX with an external adapter yet and hadn't even noticed that it didn't come with one. The documentation doesn't specify the input requirements, nor does the RCX itself. I was alway under the impression (...) (24 years ago, 23-Feb-01, to lugnet.robotics)
| | | Re: What AC adapter to use for RIS 1.0?
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| Thanks a lot guys I guess Lego should have thought about this and sell power supplies for their units (or at least let people know what kind they need) What I really wonder is why nothing has been done, I just got this unit 2 days ago, but Lego (...) (24 years ago, 23-Feb-01, to lugnet.robotics)
| | | Re: What AC adapter to use for RIS 1.0?
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| (...) This is a follow-up to your earlier questions about what adapter to buy. I took apart my RCX this evening and started poking around inside. The bulk of the electronics is powered through a National Semiconductor LM2936M SO (Small Outline) (...) (24 years ago, 1-Mar-01, to lugnet.robotics)
| | | Re: What AC adapter to use for RIS 1.0?
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| (...) A final word on this subject. I've posted two replies already but have missed the obvious until today. Unfortunately, it's so obvious that it's embarrassing. I made a comment that I was surprised that there were no instructions in the manual (...) (24 years ago, 11-Mar-01, to lugnet.robotics)
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