Alt-BEAM Archive

Message #09441



To: beam@sgiblab.sgi.com
From: "Sathe Dilip" sathe_dilip@bah.com
Date: Fri, 21 Jan 2000 10:30:09 -0500
Subject: [alt-beam] Re: jameco


I could be wrong but from the dimensions it sounds like one of those
flexible cells that are very thin & very light.

Dilip
----------------------------

Bumper314@aol.com wrote:
>
> In a message dated 1/20/00 6:21:20 PM Mountain Standard Time,
> dibst11+@pitt.edu writes:
>
> > that's a big solarcell.
SNIP
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When everything's coming your way, you're in the wrong lane.
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9442 Fri, 21 Jan 2000 11:23:35 -0500 [alt-beam] Re: Score: BEAM Roboticist 3 - Model Railroader 0 beam@sgiblab.sgi.com "Sathe Dilip" The IC seems OK if one just wants to use the H bridges. Though the
description says PWM, for PWM, you still need external PWM control. The
charge pump could be useful but it is not clear what kind of current it
can supply (it is also not clear if Vg is internally connected to the
predrive for supply). Too bad the package is a 32 pin surface mount.

Dilip
------------------------------------------
Wilf Rigter wrote:
>
> Now this looks very exciting indeed!
>
> http://www.rohm.com/products/databook/optdisc/pdf/bh6511fs.pdf
>
SNIP
------------------------------------------------------------
When everything's coming your way, you're in the wrong lane.
------------------------------------------------------------



9443 Fri, 21 Jan 2000 17:46:18 +0100 [alt-beam] SV: Battery/Solar Power "Thomas Pilgaard" Why not just breadboard it?

> Solar Panels are a little expensive for experimenting,
> and I'm sure someone agrees with me out there, and has
> experiance in what I am looking for. [snip]

Cheers,

Thomas



9444 Fri, 21 Jan 2000 15:21:21 -0500 [alt-beam] Re: Grounding??? beam@sgiblab.sgi.com Richard Weait At 11:49 AM 1/20/00 -0500, Ed Spike wrote:
>COMMON, EARTH, and GROUND.
>All can be the COMMON connection as explained below. One can have a
>COMMON that
>is not the GROUND and is not connect to the EARTH (as the HYDRO service EARTH
>grounding rod).

[snip]

Above, Ed refers to "HYDRO." In Ed's location the local electrical
power company is called "Ontario Hydro" because of their emphasis on
hydro-electric generating stations. That is, electricity generating
turbines driven by a waterfall. This common reference to "Hydro" as
electricity can be confusing to those who refer to "hydro" with respect
to water.

Is this any clearer?

Cheers,

Richard.

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