Date: Tue, 22 Aug 2006 07:40:17 -0400
From: "Bill Cotton" <[EMAIL PROTECTED]>
Subject: Re: AW: [LIB] Libretto solar powered?
----- Original Message -----
From: "David Chien" <[EMAIL PROTECTED]>
To: "Libretto" <[email protected]>
Sent: Tuesday, August 22, 2006 1:32 AM
Subject: Re: AW: [LIB] Libretto solar powered?
Date: Mon, 21 Aug 2006 22:32:04 -0700 (PDT)
From: David Chien <[EMAIL PROTECTED]>
Subject: Re: AW: [LIB] Libretto solar powered?
Now the next steps are to research the specs for solar panels
(voltage/current/light-diagrams) and to search for a 15V stabilizer which
operates lower input-voltage. Perhaps it is worth to look to the original
12V-Adapter. - My first idea was to avoid this extra piece... :-((
I use a 12 volt card adapter, extra cell and a folding solar panel. this is
the setup I used before the gps had maps.
http://www.billcotton.com/tripmate.htm My latest trip usind a solar panel is
here. http://www.billcotton.com/quest_on_bicycle.htm
They do have electronic power supplies that run off what? charge-pump
theory,
that will boost a lower voltage source to a fixed voltage source you want.
I
think one of the most common usages is in LED flashlights. A battery
fluctuates over time, and the voltage is often lower than needed to power
a
LED, so these converters boost the voltage to a higher one and allow you
to
power the device just fine off lower voltage batteries.
My Luxeon 5 watt light use a unit called a power puck to do this
http://www.billcotton.com/luxeon_light_bar_and_gps_mount.htm
In any case, I'm sure a quick search will do it....
One idea is to see if there are any car chargers out there that can power
the
Libretto(I think there are - search Mailing List archives). Then, you can
easily start with a lower input voltage, and rely on the charger to boost
the
power to something the Libretto can use. but the problem here is to see
if the
charger can handle a wide input voltage fluctuation, or if what you really
need
is another power supply converter....
Of course, the other idea would be to simply see if there's a way to
expand
the battery pack out front by another set of cells -- then, you can run up
to
6-8 hours on a single charge.....
adorable toshiba libretto
The latest news and information for the Toshiba Libretto owner.
http://www.silverace.com/libretto/
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