Without the chopper board the connection is like your diagram, but if the power supply voltage is higher than the stepper voltage you would also have a resistor in series with each common connection.
The chopper board sits on top of the 3 axis driver and gives 2 common connections for each stepper lined up with the 4 phase connections below.
Last edited by tachus42; 09-12-2004 at 09:34 AM.
Reason: Beer
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