Alt-BEAM Archive
Message #08537
To: beam@sgiblab.sgi.com
From: "Mike Kulesza" mikekulesza@hotmail.com
Date: Tue, 21 Dec 1999 22:15:56 GMT
Subject: [alt-beam] Re: How Long has yur Bot been alive?
My walkers so far didnt see that much of life before i got upset and made
plans for new better ones with the same parts, becasue they were reaaly bad.
My FLEDSE symet (looks like a viking probe (motro in centre, with cell on
top, and 4 caps sticking out from centre)) has lived for about a month, but
he doesnt get a lot of light...
>From: SG
>Reply-To: beam@sgiblab.sgi.com
>To: beam@sgiblab.sgi.com
>Subject: How Long has yur Bot been alive?
>Date: Tue, 21 Dec 1999 22:33:22 -0600
>
>You guys with RJP's...
>Who has the record for longest continually running solar bug without
>interuptions?
>is anyone up to a year?
>-Spark
>
______________________________________________________
8538 Tue, 21 Dec 1999 22:20:28 GMT [alt-beam] Si vs SC - custom cells beam@sgiblab.sgi.com "Mike Kulesza" You all know the blue radio shack cells - 300 mA, 0,55 V... sooo... if you
cut them into 8, and put in series, you get 37.5 A @ 4 V!!!! right?????
>From: Bob Shannon
>Reply-To: beam@sgiblab.sgi.com
>To: beam@sgiblab.sgi.com
>Subject: Re: silicon VS SunCeram
>Date: Mon, 20 Dec 1999 20:00:38 -0500
>
>adam-m wrote:
>
> > Bob,
> >
> > Suncerams do perform better in lower light levels than monocrystalline,
>i've
> > done tests.
>
>Can you show me the results? My testing shows the opposite to be true, but
>I can easily see from the V/I curves that this is a load-dependant
>question.
>
> >
> > Nasa uses monocrystalline because of their higher output under bright
> > conditions - it never rains in space... Its a matter of hourses for
> > courses, the environment i place my bots in is rarely outside - or in
> > space - so the amorphous ones are a better fit.
>
>Actually, the light on Mars is much dimmer than on Earth. Full sun on Mars
>falls within the range of some room lighting. If SunCerams were more
>efficient
>under these conditions, why does NASA use silicon cells there?
>
> > If you are so taken by monocrystalline PV cells, make a bot with them
>and
> > tell us how it works.
>
>I have built several bots with both types of cells. I have told you how
>mine
>work.
>
> > PS - Voyager, NASA's most distant explorer uses a reactor for it's
>power,
> > not PV cells.
>
>True. But all PV powered NASA craft use silicon cells rather than SunCeram
>type
>
>cells.
>
>Simply show me a SunCeram that delivers the same wattage as a silicon cell
>of
>the same
>surface area.
>
>
______________________________________________________
8539 Tue, 21 Dec 1999 17:40:36 EST [alt-beam] Re: Si vs SC - custom cells beam@sgiblab.sgi.com Bumper314@aol.com In a message dated 12/21/99 2:21:13 PM Pacific Standard Time,
mikekulesza@hotmail.com writes:
> You all know the blue radio shack cells - 300 mA, 0,55 V... sooo... if you
> cut them into 8, and put in series, you get 37.5 A @ 4 V!!!! right?????
I worked on that for quite a while...actually harder then you would
think...the cutting part was the hardest. If you have any success without
spending more then $10 I would be interested
Steve
8540 Tue, 21 Dec 1999 17:52:00 EST [alt-beam] chirp circuit beam@sgiblab.sgi.com Bumper314@aol.com what about adding some lifelike characteristics to this photopopper circuit.
Or maybe that 1381 chloroplast. It would sit in the sun and chirp...just for
run really...while it is maybe charging a bigger cap that makes it ready to
shoot off if the light source moves. Just a thought
Steve
8541 Tue, 21 Dec 99 17:00:27 +0600 [alt-beam] Re: Si vs SC - custom cells "beam@sgiblab.sgi.com" "Dan Larson" Gentlemen:
Please check out
http://www.plastecs.com
They have some "Mini Solar Panels" that are essentially what
you are describing here. They are compsoed of multiple
"Mini" silicon solar cells soldered in series and are very
small. This company also has a wide variety of other
silicon solar cell products are very reasonable prices.
Alas, they carry no Sunceram type solar cells....
I have no affiliation with these folks, so this is not
a spam message, however I have purchased cells from them
before and they are a very good company.
Dan
On Tue, 21 Dec 1999 17:40:36 EST, Bumper314@aol.com wrote:
>In a message dated 12/21/99 2:21:13 PM Pacific Standard Time,
>mikekulesza@hotmail.com writes:
>
>> You all know the blue radio shack cells - 300 mA, 0,55 V... sooo... if you
>> cut them into 8, and put in series, you get 37.5 A @ 4 V!!!! right?????
>
>I worked on that for quite a while...actually harder then you would
>think...the cutting part was the hardest. If you have any success without
>spending more then $10 I would be interested
>
>Steve
>
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