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brushless motor experiment | 6 comments (6 topical, editorial)

Re: brushless motor experiment (3.00 / 0) (#1)
by donald77777 (donald7_44@hotmail.com) on Sun Mar 16th, 2008 at 10:29:20 AM MST
(User Info)

Talking as a computer repairperson, some HD motors require the fourth electrical pad to be used for the control signal. The motors will spin up but then they will stop after reaching full speed.

Re: brushless motor experiment (3.00 / 0) (#2)
by dinges on Sun Mar 16th, 2008 at 10:38:55 AM MST
(User Info)

Just tried out another HDD board. This one had the 4 pads as you describe. The motorconversion runs pretty fine on it, but with very little torque; it's easy to stop it from turning by holding the shaft.

Also, this other board seems to turn off power to the motor after -exactly- 60 seconds.

The driver IC is a Hitachi HA13481. Have got the datasheet for it now.

Good fun, but not of much use. Still, might be fun for someone to connect their axial flux generator to an old HDD board and see it run as a motor.

Peter.

[ Parent ]

brushless motor experiment | 6 comments (6 topical, 0 editorial)

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