At first, with the adapter disconnected from the notebook, I charge the capacitors inside of the adapter by connecting and re-connecting repeatedly (1-2 seconds intervals). The first 5 times the breaker trips, but eventually the capacitors are charged, so no initial high current is drawn from the socket, and the breaker is happy.
Only then I connect the notebook to the adapter. I never tried to draw too much power from the airplane socket by playing GPU/CPU intensive games.
Wish you productive flights!
If someone is drawing 120w - 1 amp - your only control as a power source is to try to lower the voltage (voltage potential). Problem one: that will go out of spec with what devices expect, if you try to provide 80 vac instead. Problem two: switch mode power supplies that can handle sagged voltages will just try to draw more amps to get the same net power.
There's really not a good way to "cap out" power. The device just sees voltage potential (volts) and doesn't know to go lower. Blowing a fuse is the only real indicator we have.
It "just" requires both sides to support that. Which won't happen as we already have USB-C if you want to negotiate the power usage.
Maybe the source sends S-O-S in Morse code. Maybe it sends a requested max power.
We can invent signalling strategies to communicate yes. EV chargers use HomePlug Green for example to commitcate. This could be consumerized & put into all devices, used to perform negotiations. https://en.m.wikipedia.org/wiki/HomePlug
>We can invent signalling strategies to communicate yes. EV chargers use HomePlug Green for example to commitcate. This could be consumerized & put into all devices, used to perform negotiations. https://en.m.wikipedia.org/wiki/HomePlug
I'm kinda surprised that's relatively rare approach, in-band communication like that saves 2 wires so would technically allow USB-C to get extra 20% power boost over same connector. I think I saw it used in some solar stuff to coordinated various devices of same manufacturer.