Alt-BEAM Archive
Message #10939
To: beam@sgiblab.sgi.com
From: "Timothy Flytch" flytch@hotmail.com
Date: Sat, 26 Feb 2000 23:26:02 PST
Subject: [alt-beam] Re: printer caps?
>I'm confused. What does the voltage reading actually have to do with it??
>-William
I have been meaning to through this out for a long time...
when I was in high school some of my friends and I built a Tesla coil...
well we also built the capacitors for it... were talking thousands of
volts... we learned that the aria of the plates determines the capacitance
and the distance between determines how much voltage it can handle... Too
high of voltage and you get arcing between the plates... we used aluminum
foil and glass plates... A little crude but it was what we could scrounge as
high schoolers...
how dose this apply to beam??? caps are made using metal foil and an
isolative layer of plastic film which is then rolled up kinda like a
sleeping bag... the higher the voltage the thicker the plastic film is...
this directly affects the size and weight of the guts of the cap get... It
then needs a bigger heavier container to hold it (can)...
hope this made sense :)
Timothy...
______________________________________________________
10940 Sat, 26 Feb 2000 23:38:54 PST [alt-beam] Re: walker beam@sgiblab.sgi.com "Timothy Flytch" >-bet you're REALLY confused now!
>-Sparky
No Sparky,
That made a lot of sence... Thank you :)
Timothy...
>At 09:58 PM 2/26/00 PST, you wrote:
> >Sparky,
> >Could you elaborate on this... Do you mean make all the changes so that
>the
> >body stays at the same angle at the end... or to change angle too???
>(angle
> >being relative to the ground)
>
>well, to get more "LIFT" you would increase the angle of the front motor
>(towards the sky. BUT...
>if your legs where already configured so that the body was PARELLEL with
>the floor, they would then be to short, (having been lifted UP a bit more
>you see)
>
>thats what i meant by lenghening front legs, but mabe a slight adjustment
>(turning leg assembly IN towards body would lengthen the leg reach enuff.
>-bet you're REALLY confused now!
>-Sparky
>
______________________________________________________
10941 Sun, 27 Feb 2000 00:33:14 -0800 (PST) [alt-beam] Re: YEAH!!!! beam@sgiblab.sgi.com Max Inggal WHen I first told everyone on teh list about my window
probes they asked me the samething and refered me to
your site. I checked it out and the idea is the same
as your carbots just different structure. If I can
get my hands on a digital camera or scanner I'd be
pleased to show you
__________________________________________________
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10942 Sun, 27 Feb 2000 04:27:42 -0600 Solar Cell tests FCO Enr.
> greetings,
>
> I did some tests with some various solar cell configurations
> and here is some of the data I gathered as well as some questions
> for those of you who can explain this phenomena.
>
> First off, I tried various combinations to find the most efficient
> low light (my ambient light level) setup. The winner is surprising
considering
> even my Solarbotics catalogue seems to point in the wrong direction.
>
> A - SC2422 (3.5v @ 6ma)
> B - SC2433 ( 2.7v @ 16ma)
> ( I also experimented with the SCPDs but I didn't write down and time
> the results so I won't include them).
>
> The goal was to see how fast the circuit could gain .01v in my ambient
> light. I did my best to avoid any movement of cells.
>
> A 11.5 seconds
> A + B in series 6 seconds
> A + B in parallel 2.5 seconds
> B 3.5 seconds
>
> Now this is pretty odd considering it seems like wiring these
> cells in parallel improved their low light capability (not by much
> considering the space it takes up).
>
> WEIRD: When the voltage in the circuit reached 2.2 something volts
> I noticed it was takin MUCH longer.. from 2.23v - 2.24 it took
> 1 minute 7 seconds!!! I looked at my meter again and it hasn't
> budged from the 2.24v mark in over 2 mins!!
>
> I also noticed the times I stated above were between 1.4 and
> ` 1.58v. It seems like the charging between 1.1v and 1.2 is almost two
> times faster! Why does it vary depending on circuit voltage and why
> did the voltage sort of plateau at 2.24v?
>
> Now the light level hasn't changed AT all and I tried again when it got
> to 2+ volts the cycling was a LOT slower to get the same 0.01v
> WHY? So this also means if I get the lowest rated trigger it would
> improve low light capability DRASTICALLY!
>
> I would appreciate any feedback on this.
>
> Andy
> fco@total.net
>
> hrdware's digital sanctuary - mindless oddities
> http://www.angelfire.com/pq/hrdware
>
> The Factory - TF Map Making Tutorial
> http://www.planetfortress.com/factory
>
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