- Joined Aug 3, 2014
Will do.. Thanks..Hello there welcome to AAC
Could you possibly take a photo of your fan drive specifically the circuit board if you could open it up or have access to it thank you
Good suggestion, spidey. It is reasonable and simple to try.
I will have to do a test. I wonder if the pot is adjusted toward the low side, will the pot to wiper resistance not return 5volts?
My bad for getting the terminology wrong. Rheostat, pot, variable resistor, I kind of think of these as the same. Yes this is indeed a 3 wire potentiometer. From the circuit board label it is +5v, Signal (connected to the wiper), and ground. The connectors shown in the image are, left to right. Speed control, 12v - 5A DC, and the brushless fan motor. On the back board the labels for the speed control areFor starters now, we have no information about what the actual voltages at the speed setting potentiometer are. AND, it is not a rheostat, they only have two connections. It is indeed a potentiometer.
The fan is clearly not a simple small fan, it is driven by a variable speed brushless motor.
So I was able to try this and it works!
From the board photo it is a brushless DC motor, and from the capacitors on the control board I would guess 24 volts DC supply.Is fan motor AC or DC & @ what voltage.
12VDC - 65 watt air blower. Low noise, 35,000 rpm nominal, 45,000 max rpm at shut off.From the board photo it is a brushless DC motor, and from the capacitors on the control board I would guess 24 volts DC supply.
OK, so my guess was off a bit. 35K RPM is screaming. That could be a supercharger for a small engine. The ones on dragsters take about 20HP at speed.12VDC - 65 watt air blower. Low noise, 35,000 rpm nominal, 45,000 max rpm at shut off.
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