DC fan for PID control

Community General Discussion
1

Hello everybody,

I am following a project consisting of levitating a ping pong ball in a tube using a PID controlled fan.

From my research on internet and my own preferences, I would like to buy a (powerfull) DC fan to be able to elevate and regulate the height of the ball. I have actually 2 DC fans of different voltages 12 and 24V but they are not powerfull enough (Noctua fans PWM regulated)

From other projects, I observe that they rather use simple 32V DC fans such as hairdryer fans. The idea is that they connect the PWM output of the Arduino board to the gate of a (big) transistor. The exit of the transistor is then connected to the fan itself, thus regulating its voltage/rpm and consequently its power so no PWM fan is needed (or at least it is not a necessary condition).

However, looking on amazon or internet in general I can not find such fans...
Does anyone knows where I could find powerfull DC fans ? Not easy to find even on amazon or else.

Many thanks for your help

With Very Kind Regards,

Guillaume Masure

2

Image

Would this one be big enough or do you need a bigger one?

1 Like
3

You probably have to buy the whole hairdryer, to get a hairdryer fan.

4

Really?

Capture.PNG
Capture.PNG809×447 27.3 KB

5

Pretty tiny wires for 100A....

6

Data sheet said they were made out of uobtainium.

7

That must be a highly conductive substance!
Maybe a even a room temperature super conductor.

1 Like
8

Search for "high speed server fan". They are usually 12 or 24v.
Example:

9

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.