Harddisk hub motor
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Harddisk hub motor
It is indeed a BLDC motor. The coils are Y-wound.
The left pad goes to the center point N, the remaining are the 3 phases U,V,W. Single-coil-resistance is about 1.6 Ohm.
The disk's PCB contains a Hitachi HA13645 driver. Unfortunately I just can't find a datasheet for that.
From what I've read so far, driving these with back EMF detection on the un-driven coils could be quite difficult.
scholar.lib.vt.edu/theses/available/etd-09152003-171904/u...
www.atmel.com/dyn/general/tech_doc.asp?doc_id=10416
The left pad goes to the center point N, the remaining are the 3 phases U,V,W. Single-coil-resistance is about 1.6 Ohm.
The disk's PCB contains a Hitachi HA13645 driver. Unfortunately I just can't find a datasheet for that.
From what I've read so far, driving these with back EMF detection on the un-driven coils could be quite difficult.
scholar.lib.vt.edu/theses/available/etd-09152003-171904/u...
www.atmel.com/dyn/general/tech_doc.asp?doc_id=10416
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