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Electronics For All (EFA)

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About EFA Community: For People around the world, who are interested in Embedded SW/HW, Electronics, Industrial Automation, Robotics, OSH, OSS, Beacons, 3D Fab,Professional N/W'ing, knowledge sharing & discussions on these technologies & engineering.19 Servers

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15 Dec 2019
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20 Dec 2019
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31 Dec 2019
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4 Jan 2020
20:09:48@danielp3344:matrix.orgDaniel PetersonI'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
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9 Jan 2020
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5 Jan 2020
12:33:26@analogmind:matrix.organalogmind
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@danielp3344:matrix.orgDaniel PetersonI don't really know...
18:32:18@analogmind:matrix.organalogmind
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:matrix.treyead.techApplePiYou could use the induced emf to calculate the voltage present
18:40:46@analogmind:matrix.organalogmind
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
11 Jan 2020
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17 Jan 2020
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