OP should also be aware of drive limitations of the Arduino pins. Transition times (off-to-on and on-to-off) can be very high power dissipation times, even more than on times.
Donald.
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-------- Original Message --------
On 11/23/24 09:52, Nuno Yahoo wrote:
24V stepper motors driven by 25V rated MOSFET¡¯s is a really bad idea.
That¡¯s too close to the their limit. A single coil spike could destroy them.
From this perspective, The BUZ seems a better option.
I¡¯m assuming those stepper motors will not consume anywhere near 11A.
As long as they have a good heat sink assembly, it¡¯s worth a try.
If you¡¯re going to buy them on purpose, I advise looking for something better.
If you already have them, and assuming a hand size stepper motor, 11A seems more than enough.
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So, yes, they might work. (I assume no responsibility for any smoke clouds! :D )
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Nuno T.
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From: [email protected] [mailto:[email protected]] On Behalf Of paul larner via groups.io
Sent: 23 November 2024 11:20
To: [email protected]
Subject: Re: [electronics101] transistor help needed
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well at the moment aan arduino uno is driving the aod472 fets to drive a nima 23 stepper,i have made a pcb in eagle the buz 72 would be better to mount on the pcb than the d2pak fets,i just wondered if they would work,i am using 24v for the stepper.
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Nuno T.
