I need a blower so I’m looking at your squirel cage blower RB SPA 718 33mm. It’s rated 6-12v dc. Economically speaking (cost and estimated time runable per battery capacity) what batteries (voltage etc) would I need for this and how long could I reasonably expect them to last? Should I get a setup for 6v, 9v or 12v? Should I get a 12v with a pot? Is there a way to set it up connected to ac?? Maybe both?? Please help!! Thanx
Hi,
The 12V, 16CFM, 33mm Blower Fan pulls about 1Amp at 12VDC. Here is what Sparkfun mentions about the power requirements of this blower fan :
They recommend using this 12V/5V, 2A Power Supply with this blower fan.
Hi,
The RB-Spa-718 specifications indicate that it is rated for 6-12 V DC and has a rated power of 12 W. The manufacturer indicates it draws about 1 A @ 12 V DC, which would make that about 12 W. Therefore, it is roughly 83% efficient, which sounds about right.
If you decide to use an AC->DC adapter, then you can have a look here. Anything that can provide more than 1 A should be fine. Something like the RB-Hli-14 should serve well.
For batteries, the choice will depend on the battery chemistry you wish to use. If you go for NiMH, a 12 V Dc pack would be the logical choice, such as RB-Sta-12 (12 V DC, 1600 mAh) and RB-Sta-14 (12 V DC, 2800 mAh).
Recommended NiMH charger: RB-Ten-02.
For LiPo, you should go for a 3S (3 cells in series) model, such as RB-Sta-03, RB-Sta-16 or RB-Sta-15.
Recommended charger for 3S LiPo: RB-Hui-06.
Since the rated discharge rate of these battery packs is much higher than 1 A (the RB-Sta-12 can provide 3.2 A, the RB-Sta-14 5.6 A, the RB-Sta-03 well over 30 A, etc.), you should get roughly the same capacity as it is rated for.
Therefore, for a 1600 mAh battery, you would get 1600 / 1000 = ~1.6 hours or ~96 minutes of useful operation.
If you go for a more powerful battery pack, such as the 4000 mAh, you would get ~4 hours.
We hope this helps.
Sincerely,