I have always been afraid to plug in any sensitive electronics into that plug as typical North American voltage is 115V 60Hz and that socket is 115V 400Hz. I have seen the groomers on the aircraft and they use a BIG stepdown transformer when plugging in their vacuum cleaners.
How would a step-down transformer help change the frequency?
We have two, one 115v 400Hz AC and a 28v DC. Both have the exact same design.
Some pretty smart design that. To give those two different plugs identical designs.
