Motor Digrama and Schmatics

[KronoLeginaire]

Ok, I'm doing a fan mod and I am in search of electric motor Digrams & Schematics. Thanks

[morriswindgate]

What are you trying to do that you need the schem? The DC brushless motors in the pancake fans are basically sealed and there isn't anything you can do to them other than add a variable resistor or run them at 7 volts.

[KronoLeginaire]

Actuall, I was going to eliminate the PCB board w/ all the resisitors and such on it and run the power directly to the magnent rotator

[morriswindgate]

PCB board w/ all the resisitors ????
What fan are you talking about?

[KronoLeginaire]

This cheap case fan I got. So cheap it dose not even have a name to it.

[morriswindgate]

Buy a Sunon or Anteck Ball Bearing fans and forget about all the trouble.

[Paul Victorey]

Well, if you aren't sure what the PCB does, I wouldn't think about removing it.

Identify the function of the PCB first, then attempt your mod, or you'll be in trouble.

[bosco]

I smell smoke.....
If you're gonna modify that fan, run it out of the case first to avoid any major incidents.

[morriswindgate]

I think that you are getting a little bit carried away with the Moding.
The PCB that you are talking about is what creates the apparant rotating magnetic field to get the motor to turn, since these motors are brushless.
Also if by a magnetic rotator you are talking about a magnetic coupling (Motor with a magnet attached to it for turning a device without it being physically connected to the motor) I think you are living a little on the risky side. Putting a magnet inside the computer case, much less one that will be rotating therefore potentially inducing a current into metal parts, is not a very good ideal around the drives and chips.
Just buy a 5 buck ball bearing fan.

[Hpro]

It will not even work as the PULSE isn't given - as those - as Morris correctly said need a pulse to rotate - so if you like to get a high speed fan then take a 12 volt brush fan - and you will regret it because it will add noise to your system - also a good brush fan motor will be about 4 times that expensive than a regular brushless fan..
If you remove the pcb then tell me where you get the rotation from there? as the magnetic field has to move to get the rotor turning so if you have DC current on stator - with only TWO lines where is the start then - for a AC brushless motor you will need Three lines the third one connected be a capacitor to either terminal so that there is a change of currentflow which then makes the magnetic field to move within the stator - causing the rotor to turn..
Edit - Oh I almost forgot - and thern where you get the AC from - because this is exactly what this pcb does..convert DC to AC and this is necessary to get that brushless fan rotor moving.
Hpro