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Topic: drive a bipolar stepper with l298, without current limiter (Read 864 times) previous topic - next topic

copachino

Nov 13, 2012, 06:16 pm Last Edit: Nov 14, 2012, 11:37 pm by copachino Reason: 1
hi, i know this IC its for unipolar stepper,but there its a chance to drive a bipolar stepper???? or i need a h bridge to do so??

MarkT

If the motor's 4-wire you can't drive it unipolar.  So you can't use ULN2003 array.  If its 8, 6 or 5 wire you can use unipolar drive since the middles of the windings are available.
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copachino

i think i will go for the L298, but, i think my stepper its 1A, but i cant get a l297 for the current limiter...

any sugentions, maybe transistors based chopper

MarkT

Any more information on the motor?  What is the winding resistance?  Do you want it to step fast?
[ I won't respond to messages, use the forum please ]

copachino

its an small stepper, 37.5 ohms, it doesnt say any voltage, i will supply it with 12V, i have the l298N to drive it, but i need, the current limiter.

about how fast, i rather have power than speed, a dont care if it move to 30rpm, as long as it can deliver all the pawer he can(without getting burn)....



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