Battery Powering a CPU fan?

Guest
I'm trying to figure out a lightweight ventilation solution for my
terrarium[1], and am considering a battery powered 80mm fan as a solution.
I don't need a lot of circulation, just a little flow.

How many days could an 80mm fan run off of a 9v battery? Is there anything
(ie, resistor) that I can put between the two to lengthen the life of the
battery?

Are there any commercial solutions that would meet my needs?



[1] I have a 3"x3" opening at the top back of the terrarium hood[2],
which I plan to cover with a screen and use for venting. I'm thinking
I can cover it with a cpu fan pushing air in, and the air can exit using
the various other nooks and crannies in the lid.

[2] There's also an 8W Fluorescent light on the hood. Is there a simple
way to make use of the power to power a CPU fan?



--
..............................................................................

"Listen to those who are seeking the truth; doubt those who have found it."

Andre Gide

..............................................................................
dswan@m3m3t1ccand1ru.com http://www.memeticcandiru.com
 
On Fri, 19 Dec 2003 04:59:50 GMT,
hym3n_h0l0c4$t@salmahayeksknockers.edu wrote:

I'm trying to figure out a lightweight ventilation solution for my
terrarium[1], and am considering a battery powered 80mm fan as a solution.
I don't need a lot of circulation, just a little flow.

How many days could an 80mm fan run off of a 9v battery? Is there anything
(ie, resistor) that I can put between the two to lengthen the life of the
battery?

Are there any commercial solutions that would meet my needs?



[1] I have a 3"x3" opening at the top back of the terrarium hood[2],
which I plan to cover with a screen and use for venting. I'm thinking
I can cover it with a cpu fan pushing air in, and the air can exit using
the various other nooks and crannies in the lid.

[2] There's also an 8W Fluorescent light on the hood. Is there a simple
way to make use of the power to power a CPU fan?
Click to expand...



heres a bone for ya




battery capacity (milliamp­hours) / total current (milliamp) = battery
life (hours)


hurc ast
 
On Fri, 19 Dec 2003 04:59:50 GMT,
hym3n_h0l0c4$t@salmahayeksknockers.edu wrote:

I'm trying to figure out a lightweight ventilation solution for my
terrarium[1], and am considering a battery powered 80mm fan as a solution.
I don't need a lot of circulation, just a little flow.

How many days could an 80mm fan run off of a 9v battery? Is there anything
(ie, resistor) that I can put between the two to lengthen the life of the
battery?

Are there any commercial solutions that would meet my needs?



[1] I have a 3"x3" opening at the top back of the terrarium hood[2],
which I plan to cover with a screen and use for venting. I'm thinking
I can cover it with a cpu fan pushing air in, and the air can exit using
the various other nooks and crannies in the lid.

[2] There's also an 8W Fluorescent light on the hood. Is there a simple
way to make use of the power to power a CPU fan?
Click to expand...

9v battery=500 to2000 milliamp hours

hurc ast
 
As a followup, I've found a solar powered battery charger on Ebay that
outputs a small ammount of juice. This would be ideal, as it would just
run off of the residual light off of the hood lamp.

It's at:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3164930751&category=3240

Does anyone have a feel if it would power a 80MM fan or not? Would I be
better off considering a slightly smaller fan?




--
..............................................................................

The rank and file are not philosophers, they are not educated to think for
themselves, but simply to accept, unquestioned, whatever comes.

-Susan B. Anthony

..............................................................................
dswan@m3m3t1ccand1ru.com http://www.memeticcandiru.com
 
Why not buy a voltage regulator that steps down 120 to >>>>6,9,or 12 volts
instead of buying batteries?

@Radio Shack !

Jd

<hym3n_h0l0c4$t@salmahayeksknockers.edu> wrote in message
news:aBvEb.112507$bC.84784@clgrps13...
I'm trying to figure out a lightweight ventilation solution for my
terrarium[1], and am considering a battery powered 80mm fan as a solution.
I don't need a lot of circulation, just a little flow.

How many days could an 80mm fan run off of a 9v battery? Is there
anything
(ie, resistor) that I can put between the two to lengthen the life of the
battery?

Are there any commercial solutions that would meet my needs?



[1] I have a 3"x3" opening at the top back of the terrarium hood[2],
which I plan to cover with a screen and use for venting. I'm thinking
I can cover it with a cpu fan pushing air in, and the air can exit using
the various other nooks and crannies in the lid.

[2] There's also an 8W Fluorescent light on the hood. Is there a simple
way to make use of the power to power a CPU fan?



--

.............................................................................
Click to expand...
..
"Listen to those who are seeking the truth; doubt those who have found
it."

Andre Gide


.............................................................................
Click to expand...
..
dswan@m3m3t1ccand1ru.com
http://www.memeticcandiru.com
Click to expand...
 
<king@ star.net> wrote in message
news:2l45uv44pm777svoa7caast686nu2d2cco@4ax.com...
On Fri, 19 Dec 2003 04:59:50 GMT,
hym3n_h0l0c4$t@salmahayeksknockers.edu wrote:

I'm trying to figure out a lightweight ventilation solution for my
terrarium[1], and am considering a battery powered 80mm fan as a
solution.
I don't need a lot of circulation, just a little flow.

How many days could an 80mm fan run off of a 9v battery? Is there
anything
(ie, resistor) that I can put between the two to lengthen the life of the
battery?

Are there any commercial solutions that would meet my needs?



[1] I have a 3"x3" opening at the top back of the terrarium hood[2],
which I plan to cover with a screen and use for venting. I'm thinking
I can cover it with a cpu fan pushing air in, and the air can exit using
the various other nooks and crannies in the lid.

[2] There's also an 8W Fluorescent light on the hood. Is there a simple
way to make use of the power to power a CPU fan?


9v battery=500 to2000 milliamp hours

hurc ast
Click to expand...
It sounds like numerology to me, kindly take this crap to an appropriate
newsgroup. -Daryl S. Kabatoff
 
On Tue, 23 Dec 2003 22:44:32 GMT, "Marcia and Me"
<marciaandme@hotmail.com> wrote:

king@ star.net> wrote in message
news:2l45uv44pm777svoa7caast686nu2d2cco@4ax.com...
On Fri, 19 Dec 2003 04:59:50 GMT,
hym3n_h0l0c4$t@salmahayeksknockers.edu wrote:

I'm trying to figure out a lightweight ventilation solution for my
terrarium[1], and am considering a battery powered 80mm fan as a
solution.
I don't need a lot of circulation, just a little flow.

How many days could an 80mm fan run off of a 9v battery? Is there
anything
(ie, resistor) that I can put between the two to lengthen the life of the
battery?

Are there any commercial solutions that would meet my needs?



[1] I have a 3"x3" opening at the top back of the terrarium hood[2],
which I plan to cover with a screen and use for venting. I'm thinking
I can cover it with a cpu fan pushing air in, and the air can exit using
the various other nooks and crannies in the lid.

[2] There's also an 8W Fluorescent light on the hood. Is there a simple
way to make use of the power to power a CPU fan?


9v battery=500 to2000 milliamp hours

hurc ast

It sounds like numerology to me, kindly take this crap to an appropriate
newsgroup. -Daryl S. Kabatoff
Click to expand...
yea but these numbers use REAL MATH


hehehehehehehehe

see ya fruitcake

hurc ast
 
king@ star.net wrote in message news:<9vhhuvokbvb0o6ua6acd0mjitsq8p575es@4ax.com>...
On Tue, 23 Dec 2003 22:44:32 GMT, "Marcia and Me"
marciaandme@hotmail.com> wrote:


king@ star.net> wrote in message
news:2l45uv44pm777svoa7caast686nu2d2cco@4ax.com...
On Fri, 19 Dec 2003 04:59:50 GMT,
hym3n_h0l0c4$t@salmahayeksknockers.edu wrote:

I'm trying to figure out a lightweight ventilation solution for my
terrarium[1], and am considering a battery powered 80mm fan as a
solution.
I don't need a lot of circulation, just a little flow.

How many days could an 80mm fan run off of a 9v battery? Is there
anything
(ie, resistor) that I can put between the two to lengthen the life of the
battery?

Are there any commercial solutions that would meet my needs?



[1] I have a 3"x3" opening at the top back of the terrarium hood[2],
which I plan to cover with a screen and use for venting. I'm thinking
I can cover it with a cpu fan pushing air in, and the air can exit using
the various other nooks and crannies in the lid.

[2] There's also an 8W Fluorescent light on the hood. Is there a simple
way to make use of the power to power a CPU fan?


9v battery=500 to2000 milliamp hours

hurc ast

It sounds like numerology to me, kindly take this crap to an appropriate
newsgroup. -Daryl S. Kabatoff


yea but these numbers use REAL MATH


hehehehehehehehe

see ya fruitcake

hurc ast
Click to expand...
This is basic math at best.
Just what is "real" math?
 
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