Thansk Dave,
Do you mean that your diodes are in series with the wires to the motors?
The circuit I am using has diodes from each motor wire to ground but it
would seem safer to put some in the motor wires as well. The only worry
I would have is the breakdown voltage of the diodes - as I understand
it, the voltage spikes produced by such motors can be many times the
operating voltage so I'm not sure how I should choose the diodes working
voltage to be on the safe side.
Ian
DRigotti@... wrote:
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From: DRigotti@...
Ian,
I do not use opto-isolators on my controller boards. I DO use
blocking diodes between the driver IC and the stepper motor coils. I use 35V
max at 1.5A. This may not be "powerful" enough to bypass the diodes to
destroy a motherboard. I have never had a problem....
Dave
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