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by awelxtr 1108 days ago
I know that increasing voltage at those minuscule distances that usb-c opeates can cause electric arcs which is dangerous

Increasing current on the other hand heats stuff up which... is also dangerous
1 comments
parineum 1108 days ago
USB-C solves the arcing problem in a similar way that CCS (EV chargers) does. It doesn't engage the high voltage pins until a low voltage pilot makes contact.

I'm not sure exactly how USB solves that for disconnecting (CCS locks the connector in) but I imagine the pilot would disconnect first and that would kill the PD pins during disconnect.

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notjulianjaynes 1108 days ago
It seems that 48 volt USB-C might still have some issues with sparking during disconnect.

There's likely a better source but here's some discussion on the topic I found.

https://www.reddit.com/r/UsbCHardware/comments/106d7vi/usbc_...

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ilyt 1108 days ago
> but I imagine the pilot would disconnect first and that would kill the PD pins during disconnect.

Don't imagine, just look at USB-C socket. So the answer is "not really", at least I didn't noticed pins for the power being longer

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parineum 1106 days ago
The 240W cables have a different spec so that's not indicative of what you'll see for 48v.
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