Alt-BEAM Archive

Message #10252



To: beam@sgiblab.sgi.com
From: Sathe Dilip sathe_dilip@bah.com
Date: Tue, 15 Feb 2000 15:32:19 -0500
Subject: Re: Solar cell Q



> The capacitor we connect in parallel with the solar cell acts like a
> current storage tank. You save enough current to last you for a small
> burst of motor (run) power. The level of current stored in the tank is
> indicated by the voltage on the capacitor. How much current you can
> store is decided by the size/value/capacity of the capacitor.
>
> I don't know about the American curriculum but we used to have math
> problems in school about a tank with a faucet filling it & another
> emptying it. If you have done those, you will understand the above
> analogy even better.
>
> Dilip
> -------------------------
>
> William Cox wrote:
> >
> > Q: All the solar cells in Solarbotics catalog have a small current
rating, I
> > mean, that the current they supply is smaller than the motors draw (30 -
> > 45ma). How does this work? I've got the MPJA motors, and someone said
that
> > they draw about 45ma, what type of solar panel should I use? I'm using a
> > FLED, so I guess I'd need something with >2.4 or so volts. What about
> > current? Right?
> > -William
> >
> > ____________________________
> > http://robot-central.webjump.com/
> > Robotics books, projects, resources,
> > links, news, and more!
>
> --
> ----------------------------------------------------------------------
> The early bird may get the worm, but the second mouse gets the cheese.
> ----------------------------------------------------------------------
>

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