Timeline for High Voltage PCB
Current License: CC BY-SA 3.0
16 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 26, 2018 at 6:08 | comment | added | Reid | Thanks @KalleMP for bringing back this post that I forgot I wrote back in 2012. UPDATE: The first version of the board caught on fire multiple times. Not due to trace spacing, but due to poor isolation protection (Ahh, to be young, dumb, and working on a 38.4KW battery pack). Subsequent boards got significantly better as I progressed through my EE degree, and the final version ended up in commercial use =) | |
| Nov 6, 2018 at 11:39 | comment | added | KalleMP | OP has a single sided PCB. | |
| Nov 6, 2018 at 11:33 | comment | added | KalleMP | -1: DC is as big if not a bigger arcing hazard at 75V than AC. Also any surface contamination or breaks in the soldermask combined with humidity will cause possible progressive electrical corrosion that can cause tracking and arc formation, more likely with DC. While 75V is not a huge hazard the DC aspect does not make it safer. | |
| Sep 6, 2013 at 12:53 | history | edited | Stephen Collings | CC BY-SA 3.0 |
Minor english improvements
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| Apr 22, 2012 at 0:39 | comment | added | Emery King | .05 inch seems reasonable. I'm saying i probably wouldn't use any kind of math to solve it and just use the same gaping i'd use on anything else. | |
| Apr 21, 2012 at 21:42 | comment | added | Jason S | And a normal reasonable gap is... ? | |
| Apr 21, 2012 at 20:25 | comment | added | Emery King | I've seen plenty of boards with power traces of voltages in that range at normal reasonable gaps. So I'm not going to go as far as explaining about atmospheric pressures and circuit faults on this one and assume it will be fine at any reasonable gap. | |
| Apr 21, 2012 at 14:42 | comment | added | Jason S | To be precise: 75V may not be enough to initiate an arc (I'm trying to find this), but all you need is a momentary fault that causes current to flow and get interrupted, and trace inductance will initiate an arc, and it will be maintained until the arc is extinguished because the source of energy is gone or the traces burn up far apart. | |
| Apr 21, 2012 at 14:32 | comment | added | Jason S | -1: 75VDC will DEFINITELY arc. | |
| Apr 21, 2012 at 5:28 | comment | added | Emery King | I was wondering about that actually. After i wrote that i thought i remembered that they extend infinitely like gravity. | |
| Apr 21, 2012 at 4:59 | comment | added | tyblu | Note: electric fields extend to infinity (photons are massless outside plasmas). | |
| Apr 21, 2012 at 4:36 | vote | accept | Reid | ||
| Apr 21, 2012 at 3:55 | history | undeleted | Emery King | ||
| Apr 21, 2012 at 3:55 | history | edited | Emery King | CC BY-SA 3.0 |
deeper explanation
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| Apr 21, 2012 at 3:48 | history | deleted | Emery King | ||
| Apr 21, 2012 at 3:46 | history | answered | Emery King | CC BY-SA 3.0 |