3 ms·
Yes, I was confused because my Dell laptop power input doesn't have 3 wires (unless there's somehow a third wire buried in the barrel connector), so I was assum
by tgflynn 5y ago
Yes, I was confused because my Dell laptop power input doesn't have 3 wires (unless there's somehow a third wire buried in the barrel connector), so I was assuming that the ID signal is somehow just combined with the actual input voltage.
- camtarn 5y agoYes, the barrel connector actually has three contacts. The inner and outer part of the metal barrel are insulated from each other - the outer is ground and the inner is +V. The pin in the middle only carries data.
- tgflynn 5y agoThanks, that's useful information that I haven't seen anywhere else.