Subject:
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Re: 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 06:50:52 GMT
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Original-From:
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Rahul Tarkunde <{rtarkund@ptc.}StopSpam{com}>
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Viewed:
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423 times
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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. If you want a specific 10 V
adapter and do not mind doing some electronics work you can buy a 12
volt adapter, cut the positive 12 V supply cable and insert 3 diodes (
Type 1N4001 Silicon) in series. They will give you approx. 2 volt drop.(
.7 x 3)
+ from PA ---------------|>|---|>|----|>|-------------------- + to RIS
0 from PA --------------------------------------------------- 0 to RIS
regards
-Rahul
Cyborg wrote:
>
> 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 is in Reply To:
 | | What AC adapter to use for RIS 1.0?
|
| 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 (...) (24 years ago, 22-Feb-01, to lugnet.robotics)
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