| Electronics > Beginners |
| Why are Darlington transistors used to drive the 28BYJ-48 |
| (1/1) |
| Sudo_apt-get_install_yum:
Hi everyone! So I’ve been playing around with some cheap Chinese stepper motors (28BYJ-48) and I have no idea why they use a ULN2003 "stepper motor driver". It’s just a Darlington array. Why not used mosfets? Could someone shine a light on this? |
| capt bullshot:
Because the ULN2003 is old, dead cheap and has free wheeling diodes built-in. |
| Ysjoelfir:
--- Quote from: capt bullshot on July 12, 2019, 10:25:14 am ---Because the ULN2003 is old, dead cheap and has free wheeling diodes built-in. --- End quote --- In addition to that, for those steppers even the faked, even more cheaper ULNxxxx knockoffs are absolutely fine. |
| Navigation |
| Message Index |