Timeline for Why does not my power stop when alternating current goes at 0 between positive and negative?
Current License: CC BY-SA 3.0
6 events
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| Mar 10, 2017 at 9:42 | history | edited | CommunityBot |
replaced http://upload.wikimedia.org/ with https://upload.wikimedia.org/
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| Apr 13, 2014 at 19:20 | vote | accept | jpell | ||
| Apr 12, 2014 at 22:35 | answer | added | wbeaty | timeline score: 2 | |
| Apr 12, 2014 at 22:18 | comment | added | jpell | Yes but since it is a new direction wont the motor need to stop before it changes directions? Or am I missing something? | |
| Apr 12, 2014 at 22:13 | comment | added | Anthony X | Household power is delivered at 60Hz or 50Hz, depending on where you are in the world. In either case, the zero-crossing is a rather small amount of time. Motors, being mechanical beasts, have mass, and therefore inertia. During the brief period when current (and therefore torque) is zero, the inertia of the moving parts keeps it turning. True, the mechanical load will cause it to slow down a bit, but when the current builds back up, so does the torque, which speeds it back up again. | |
| Apr 12, 2014 at 21:42 | history | asked | jpell | CC BY-SA 3.0 |