small motor

t.man

New Member

• Nov 1, 2009

• #1

hi,

i've scrapped this motor out of a floppy disk drive. it has four wires; yellow, white, red and blue.
i just don't know which wire is which.
anyone know of this?

 

B

bobledoux

Member

• Nov 2, 2009

• #2

It sounds like a bi-polar stepper. Use an ohm meter to find the pair of windings. It requires distinct pulses to each coil to make it turn.

 

arhi

Member

• Nov 3, 2009

• #3

3.5" floopy, the one that moves the head? with long worm shaft? .. that is bipolar stepper, google for how to drive bipolar stepper and you will find many resources

 

t.man

New Member

• Nov 8, 2009

• #4

arhi said:

3.5" floopy, the one that moves the head? with long worm shaft? .. that is bipolar stepper, google for how to drive bipolar stepper and you will find many resources

Click to expand...

i have uln2803 chip. Can i use to control this motor?

 

Mr RB

Well-Known Member

• Nov 8, 2009

• #5

Nope. You need a dual h-bridge chip to drive a bipolar motor.