ehsjr <e.h.s.j.r.removethespampunctuation@[EMAIL PROTECTED]
> wrote in
news:8vU8k.58$BR.4@[EMAIL PROTECTED]
> Kris Krieger wrote:
>> ehsjr <e.h.s.j.r.removethespampunctuation@[EMAIL PROTECTED]
> wrote in
>> news:u3E8k.54$WJ.12@[EMAIL PROTECTED]
[edited]
>>
>> Only *after* I know all that, can I select the specific cells, and
>> configuration therof...
>>
>> - Kris
>
> As you said, you are working backwards. You don't yet understand
> that doing it that way can result in a specification for cells
> that are "unobtanium".
>
> Ed
>
"Unobtanium"??, it's a modest LED night-lamp, not an air****t beacon :p
I *already* know the batteries and their output, and the input needed by
the LED driver and what it will output to run the LEDs (which will run off
the batteries at night) - those are not the problem.
To charge my 4 little 1.2V AA NiMH batteries, I have seen the following
solar cells (and more, this isn't an all-inclusive list):
0.5V, 200mA
0.5V, 450mA
0.5V, 800mA
0.5V, 2000mA
1V, 200mA
2V, 200mA
3V, 400mA
4V, 25mA
etc.
I also know that, depending upon how I connect cells, I can up the Volts
or
up the Amps, or both if it's a series-parellel combination. The biggest
Q.
is the volts. I read that, using a 5V solar cell, charging time would be
the battery mA divided by the cell mA, but what if it was a 2V cell, or a
..5V cell?
Well, I'll write to Maxim, since it's their components I'm interested in.
They can prob. best tell me the input I need for the battery-management
IC.
- Kris
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