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what are the + and - leads on this hard drive motor? Answered

please tell me the + and - on this hard drive motor

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steveastroukBest Answer (author)2011-05-06

It doesn't have any. Its an AC motor, and relies on you putting three sine waves between the pins.

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frollard (author)steveastrouk2011-05-06

+1. it's a three phase AC motor. It can be driven with square waves, but doesn't like it.

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user
steveastrouk (author)2011-05-06

A DC motor's speed won't be constant, an AC motor like this, driven by the right signals, stays absolutely rock solid.

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iceng (author)steveastrouk2011-05-06

+1
Unlike, some very old floppy disk drives I have seen.

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steveastrouk (author)iceng2011-05-07

Yes,but they had feedback from the index hole I suspect.

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