Quote:
Originally Posted by Kos-Mos
No because it is not the same circuit as the fan. It is only driving the transistor.
As for increasing, I am not sure if the transistor will still switch with a highger value. We just don't want to to enter triphase.
*edit*
forgot to say on the last post that these fans are made to run at only 5v, so you can drive them off a lithium battery (CR123A or any photo battery)
|
thanks kos-Mos. Yeah I was debating between 5v and 12v(using 9v rechargable battery). Was having a hard time finding a 5v low dba fan for cheap.
I did like the Shicoh ICFAN 25105 25x25x10mm 2510-5 5v
http://www.alancomputech.com/2510-5.html
but I was thinking 5v might just be a bit too weak (Did not find Dba specs either). But anyhow if you have connections to laptop fans for very cheap this would be a good option, and can add two fans if cooling was not enough.
Also I have a 9v batter recharger but not one for CR123A, so that was another factor I had to consider.
edit found specs for the 2510 in 5v and 12 v but the Dba is kind of high for almost identical CFM
http://www.keyelectronic.com/2510.htm
the stealth fan looks like a winner.
Now I will compare the two 12v fans:
Stealth Fan from OP
Airflow: 1.6 CFM---0.045 CMM
Weigh: 6.5 grams (.22oz)
RPM: 8000