Has anyone removed a motor from a cd player and found a lead from it with 11 connectors on a plastic strip.
Does anyone know what the wires are for and as such how to power the motor?
thanks.
Flat flex cable - probably using multiple pins for each motor phase to carry more current,
flat-flex connectors normally have small pins, so you'd use more than one for higher current,
rather than a larger pin.
If its a bare motor then you ought to be able to measure the winding resistances and determine
which pins are commoned together.
It could conceivably be a whole motor controller integrated into the motor case, in which
case good luck!
thanks for the reply.
the flat cable solders to a piece of circuit board on the back of the motor.
It looks as if each pin does its own job and isn't connected for higher current use.
EDIT :- I think you might be right < each motor phase to carry more current > I thought you meant wires connected together to carry more current.
Why so many wires? Surely the motor isn't a stepper motor is it? Might it be that the more wires you supply with power, the faster the cd turns? Do cd's run at different speeds? its not like tape recorders with ff and rew is it?
I wonder if there is a shift register of some sort on the circuit board under the motor, I will try to get it apart tomorrow.
EDIT :- or maybe to carry more current, I will disassemble it tomorrow and see.
Most likely a BLDC motor with motor wires (thicker tracks) and hall sensors going to an external chip.
Google "CD spindle motor", images.
The "need for data" for the D/A converter sets the spindle speed.
Therefore a CD spins faster when the first track is played (inner track).
Leo..
There are three motors in a CD drive.
A disc spinning motor
A head search motor
The ejector mechanism motor
Which one are we talking about?
the disk spinning motor, as photo below.
the nearest I can get is :-
here
but it only has three wires.
