3 ms·
They tend to have different barrel connectors, because barrels can't negotiate voltage.
by sukilot 6y ago
They tend to have different barrel connectors, because barrels can't negotiate voltage.
- cushychicken 6y agoNot at all. That's part of the drawback of barrel jack connectors. There is no standard voltage output. You can undervoltage your product input, or overvoltage it and break something.
- userbinator 6y agoBefore the whole USB-C thing, the majority of laptops had already settled on something like 18-20V (with some of the smaller ones at 10-12V). The input tolerances are relatively wide and you are highly unlikely to cause damage unless the polarity is reversed. Here's some comments I made a few years ago explaining why that voltage: https://news.ycombinator.com/item?id=12618406 https://news.ycombinator.com/item?id=12618406 https://news.ycombinator.com/item?id=7594383 https://news.ycombinator.com/item?id=7594383