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| 4 Jan 2020 |
| 20:09:48 |  Daniel Peterson | I'm building an electronic ignition system for a small engine, timing is accomplished by a coil positioned next to a magnet on the flywheel of the engine. Is a simple reverse biased diode adequate to prevent damage to the mcu? (probably an arduino) |
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| 5 Jan 2020 |
| 12:33:26 | analogmind | In reply to @danielp3344:matrix.org
I'm building an electronic ignition system for a small engine, timing is accomplished by a coil positioned next to a magnet on the flywheel of the engine. Is a simple reverse biased diode adequate to prevent damage to the mcu? (probably an arduino) I think it depends on how much current the coil will generate when the magnet passes by... |
| 14:08:18 | Daniel Peterson | I don't really know... |
| 18:32:18 | analogmind | In reply to @danielp3344:matrix.org
I don't really know... There is some ratio between the velocity of the magnet, the distance to the coil, and the sizes of the magnet and the coil. Only way to then find out, is to measure. |
| 18:40:09 |  ApplePi | You could use the induced emf to calculate the voltage present |
| 18:40:46 | analogmind | In reply to @analogmind:matrix.org
There is some ratio between the velocity of the magnet, the distance to the coil, and the sizes of the magnet and the coil. Only way to then find out, is to measure. http://www.physics.gsu.edu/hsu/LCh23.pdf |
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