It will take 10 NiMH rechargeables to run a +12V fan.I only have rechargeable ones.
Sometimes you can use an appropriate supply and the fan will move. In other cases you may need to provide a PWM signal to get movement.@Reloadron They are 4 wire.
You can, as mentioned, try tying the PWM input to a logic high. Beyond that you will need 12 volts from your batteries.@Reloadron They are 4 wire.
Don't be silly. You need to provide info from the sticker on the fan- which will either be +5VDC at some amperage, or +12VDC at some amperage... Specs. We need Specs!I only have rechargeable ones.
It is 12VDC 300mA.Don't be silly. You need to provide info from the sticker on the fan- which will either be +5VDC at some amperage, or +12VDC at some amperage... Specs. We need Specs!
Well then good. Surprised it is 12 Volts 300 mA as I would have expected the current to be less. So with that you can figure your battery life expectancy.@Reloadron It turned on without a PWM signal.
So it will run about 2/0.3 = 6 hours on a fully-charged set of 10 AA NiMh batteries.It is 12VDC 300mA.
by Aaron Carman
by Jake Hertz
by Jake Hertz