Tagged Questions

3
votes
2answers
1k views

Inductive kick-back voltage calculation

I am controlling a stepper motor (M42SP-5P) with BUZ11 MOSFETs. The winding resistances are \$22\Omega\$ and each winding is 18 mH as I measured. I am driving it with 24V, so let's say the drive ...
2
votes
1answer
418 views

Do automotive relays come with TVS diodes?

The 500W inductive load question got me thinking. Cars have large radiator fans that often draw more than 15A and are pretty inductive. Do automotive relays have any sort of protection from ...