Alt-BEAM Archive
Message #12343
To: beam@sgiblab.sgi.com
From: "Sathe Dilip" sathe_dilip@bah.com
Date: Wed, 22 Mar 2000 17:42:54 -0500
Subject: [alt-beam] Re: Solar panel solder
Guys, check the lower voltage limit at which the circuit can work. As
you know a Si junction has a forward drop of 0.6 volts. No matter how
cleverly you design a circuit, I don't think it will work at the 0.5
volts provided by a single solar cell.
Dilip
-------------------
BUDSCOTT@aol.com wrote:
>
> yes, i believe it is Wilf's LED pump. pretty neat idea!
>
> -Spencer
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The early bird may get the worm, but the second mouse gets the cheese.
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12344 Wed, 22 Mar 2000 14:53:33 PST [alt-beam] Re: Alternative Power beam@sgiblab.sgi.com "Timothy Flytch" Hi Corbit... I played with this idea some time ago... can't remember what
the power output was... but to me the size was a problem... It seems that if
you tune it to 60 Hz you can suck power from the walls of your house...
I did not get as far as testing... it was just a thought exercise... Let us
know what you find???
Interested,
Timothy...
>
>
>Any one out there know the power rates of those crystal radio thingys?
>The stuff that you can use to both receive the signal and produce power?
>I was thinking it may be interesting to try out on a night active bot. I
>found some kits for radios that are the size of a credit card, stack a
>few of them and the foot print would stay pretty small. Think of it, a
>dark seeking little bot that is powered by radio waves( maybe even throw
>on one of those luminescent sheets.- fire fly/glow bug)
>Do you think it could work??
>I cant find the link right now but once I do I'll post it.
> Corbit.
______________________________________________________
12345 Wed, 22 Mar 2000 18:28:49 -0500 (EST) [alt-beam] Re: RM-1 motors beam@sgiblab.sgi.com jester96beam@iname.com I alos ordered a few of these motors. They are DEFINATELY worth that price! I think they're a much better deal than the pager motors. I compared the data sheet with one I found for pager motors (not sure if they exactly the same as SBs, but very similar non the less) and the new motors actually come out on top - they 2mA lower current, and although they're heavier the torque make up for that - about 10X heavier but about 20X stronger. They are also slower.
Chris
---- you wrote:
> I just recently order from solarbotics, some nice cheap DC motors
>
> -http://www.solarbotics.com/products1.shtml#p-rm1
>
> Thought i'd comment, these motors are actually pretty nice to use. I think
> that people often underestimate anything that isn't a pager motor or a
> cassette motor, i recently scavanged the exact same motor out of a CD-ROM
> drive, it, however didn't have the nice little gear on the shaft, which
> brings me to my next point. If you build a gearbox out of a kitchen timer or
> oven timer the motors have nice mounting holes and the gear meshes in quite
> nicely! just thought i'd comment on a good decision on solarbotic's behalf.
>
> -Spencer
>
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12346 Wed, 22 Mar 2000 18:37:34 -0500 [alt-beam] Nu/Nv smt boards "Steve Jones"
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Hello All,
This is an old subject but I had need for a single inverter Nu/Nv and havin=
g seen Richard Poiters I made up the dip package on my schematic layout pro=
gram the same as Richards. Any ways I am having 100 made up for myself at a=
cost of about $1.50 U.S. a piece and I thought I would send an offer out t=
o the list to see if any one else would like some at the same time. Please =
send your replies to me privately at skylift@ora.auracom.com attention Stev=
e Jones
content-transfer-encoding: quoted-printable
>
skylift@ora.auracom.com attenti=
on =
Steve Jones
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