Timeline for Can I exceed the rated voltage of a motor if I limit its current?
Current License: CC BY-SA 3.0
5 events
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| Aug 5, 2015 at 19:44 | comment | added | supercat | @SpehroPefhany: Motors behave interestingly when the loop resistance goes negative. >:*3 If the net loop resistance is exactly zero, applying a certain amount of torque will cause the motor to produce equal and opposite torque, thus remaining where it is. If it's slightly positive, the motor will produce opposing torque that's not quite sufficient to prevent it from moving. If it's negative, the motor will produce opposing torque which makes it turn in the direction opposite the applied torque, which can be fun as long as the motor is always free to move. | |
| Aug 5, 2015 at 14:23 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 3.0 |
added 73 characters in body
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| Aug 5, 2015 at 12:46 | comment | added | Spehro 'speff' Pefhany | @ScottSeidman Output voltage goes up slightly as current draw increases, so it behaves like an ideal voltage source in series with negative value resistor. Not a physical negative resistor, of course. The total resistance in the loop should be positive for stability. | |
| Aug 5, 2015 at 12:20 | comment | added | Scott Seidman | What is negative series resistance? | |
| Aug 5, 2015 at 12:14 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 3.0 |