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IAC inputs by Tugboat
Started on: 07-17-2004 08:39 AM
Replies: 1
Last post by: Mark on 07-17-2004 10:37 AM
Tugboat
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Report this Post07-17-2004 08:39 AM Click Here to See the Profile for TugboatSend a Private Message to TugboatDirect Link to This Post
Does anybody know how the inputs to the IAC stepper motor work? GM shows the motor as having two coils. Are they energized alternatively to step one way or the other? Or do they have to alternate to keep stepping in the same direction? Does polarity come into it?

I'm trying to figure out a simple manual control for a EFI project. Thanks for any help.

GL

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Mark
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Report this Post07-17-2004 10:37 AM Click Here to See the Profile for MarkSend a Private Message to MarkDirect Link to This Post
The polarity of the coils does change. Here's a link to a tutorial on stepper motors.

http://www.cs.uiowa.edu/~jones/step/types.html

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