Timeline for Arduino HF Interference Protection
Current License: CC BY-SA 3.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 13, 2016 at 16:13 | vote | accept | Aubury | ||
| Dec 13, 2016 at 16:08 | answer | added | Richard Crowley | timeline score: 0 | |
| Dec 13, 2016 at 15:46 | comment | added | Aubury | I asked him first and what he said didn't seem to make sense to me, that's why I went here to ask you guys for help :) | |
| Dec 13, 2016 at 15:44 | comment | added | Bimpelrekkie | Indeed, why ask here and then say you're going to consult with your dad anyway. Geez. Anyway, testers test, that does not mean a tester knows how to solve it if it fails the test (in my experience, they aks me for help ;-) ). | |
| Dec 13, 2016 at 15:41 | comment | added | Andy aka | Aha that's what he tells you but with that amount of radio gear at home he might be a spy and possibly know very little about EMI. Is that a consideration? I'm also interested in why you would ask a question on this site when your Dad "appears" to be a great source on tap all day? | |
| Dec 13, 2016 at 15:34 | comment | added | Aubury | Ok. I'm going off of what my dad told me since he knows much more about interference than I do since he does EMI testing at his job. | |
| Dec 13, 2016 at 15:28 | comment | added | Bimpelrekkie | You worry too much about this. Unless your wire is within a couple of feet next to an HF transmitter antenna, it will not be a problem. The trick is to keep the line at a low impedance level. This means: use a low value resistor to detect the reed switch closing, I'm thinking 1 kohm. That way any HF energy coupling to the wire will not have the chance to generate a high voltage in the wire. Also add capacitors in parallel with the reed switch and also one at the Arduino input. Start with 10 nF at both sides. | |
| Dec 13, 2016 at 15:25 | comment | added | Aubury | Shielding was something I was looking at. I haven't started the project quite yet because I haven't gotten the components in the mail yet. I figured some advice on how to do it properly would be good before I get too far into the project. | |
| Dec 13, 2016 at 15:18 | comment | added | vofa | That page describes how to protect your circuit from damage associated with long wire runs, not how to keep out noise. Still an important topic. Have you tried shielded wire? Ground one end of the shield, and leave the other end floating. Then you have a grounded metal braid surrounding your signal wire, and that should help reduce external noise coupling into your signal wire. If you ground both ends of the shield, current can flow in the shield, which can couple noise into your signal wire. | |
| Dec 13, 2016 at 15:15 | review | First posts | |||
| Dec 13, 2016 at 15:35 | |||||
| Dec 13, 2016 at 15:11 | history | asked | Aubury | CC BY-SA 3.0 |