23 Nov
2011
23 Nov
'11
2:34 p.m.
I like to keep the magnets. I've not found a use
for the spindle
motor: can you actually run it without the drive electronics?
The spindle motor in most small HDDs is a polyphase thing, a bit like a
stepper motor. Sometiems, particularly on older units, there are hall
effect devices to detect the rotor position, I think many modern drives
just feed the windins with the right waveforms and the rotor starts spinning.
So yes, you need drvier electroncis, but it's not hard to design.
CD/DVD/FDD motors seem better for that.
Actually, most modern-ish FDD motrs are similar to the HDD motors. I
guess the big difference practically is that in many cases (although
certainly nor all), the motor and its control electronics is on a
separate PCB in a dloppy drive so you can extract the whole model and
have soemthign that just needs power and an enable signal to get it to spin.
-tony