Timeline for How do I safely drive a 500W inductive load with a computer power supply and suppress voltage spikes from switching?
Current License: CC BY-SA 2.5
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| Nov 10, 2010 at 10:42 | comment | added | Clint Lawrence | The inductance of the motor winding will act as a low pass filter for the switching currents. It is just the voltage when the fet turns off that you need to worry about. | |
| Nov 9, 2010 at 18:28 | comment | added | Dave.Mech.Eng | Thanks! I hadn't considered that. Is there a work around you know of? I can do obvious things like limit the angular acceleration of the motor. i.e. ramp up the speed slowly to keep average current draw down. But, to stop large current transients, what about some sort of low pass filter connected directly to the power supply, with everything else I talked about connected to its output, i.e, all the circuit protection and motor? | |
| Nov 9, 2010 at 16:28 | history | answered | mikeselectricstuff | CC BY-SA 2.5 |