Alt-BEAM Archive
Message #10273
To: beam@sgiblab.sgi.com
From: Steven Dang az-anuxm1@usa.net
Date: 15 Feb 00 18:48:43 CST
Subject: [alt-beam] Re: Solar cell Q
But what happens when the solar cell is able to provide more than enough
current for the circuit.
> > > 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 sm=
all
> > > burst of motor (run) power. The level of current stored in the tan=
k is
> > > indicated by the voltage on the capacitor. How much current you ca=
n
> > > 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 curren=
t
> > rating, I
> > > > mean, that the current they supply is smaller than the motors dra=
w
> (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 a=
bout
> > > > 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 chee=
se.
> > > -------------------------------------------------------------------=
---
> > >
> >
> >
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10274 Tue, 15 Feb 2000 21:57:56 -0500 (EST) [alt-beam] Re: UBB? beam@sgiblab.sgi.com Aaron Letts
--- TurtleTek@aol.com wrote:
>> This thread is sounding very familar...
>>
>> Oh, sheesh, not this again.
>>
>> -Brien the TurtleTek
____________________________________________
My poiont exactly, you won't have to ready everything
that it posted.
Aaron
bakery@treherne.com
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10275 Wed, 16 Feb 2000 14:24:01 +1100 [alt-beam] Re: Cheap head beam@sgiblab.sgi.com Elmo
Richard Weait wrote:
> Five rubles; same as in Kiev.
Some one had to do that kinda joke :)
So far my PSH has cost me about $AUS11 for the circuit plus i am using a
nasty $AUS2 motor (not a pager) and then what ever it costs for the body
part (i am still building that bit).
Elmo
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