If you are flying in economy class how are you able to get power for your laptop? Most aircraft are equipped with sockets at regular intervals amongst the seating to allow cleaning staff to power their vacuum cleaners (refer image). Laptop power supplies can fortunately handle a broad range of voltages. In fact the mentioned power sockets run off the aircraft 112VAC 400Hz system. Just plug your laptop into one of these and presto! Your powered up able to kill those hours away on long flights doing laptop work. Incidentally I carry a DVD or two to watch on those Pacific Ocean crossing flights rather than be subjected to the airline movie programming.
For the 747-400 row 45 (A or J seat), second seat from the back, works for Qantas.
