I would take this to mean the other way.... modifying an automotive inverter to
put out 400Hz output. I'm guessing this would be to power some funky avionics requiring
400Hz from a 14V plane. If it's a PWM output, it probably wouldn't even be all that hard
to do, since it's still 120v. I don't think it'd be a good idea for a plane though.
Consumer-grade stuff doesn't quite have the robustness and interference requirements to
make it adequate on a plane.

-Cory

karel adams wrote:

: "B2431" schreef in bericht
: ...
: Could you figure a way to convert the automobile inverters for laptops
: to 400z?

: if I understand your question allright,
: you are wondering how a commercial automobile converter
: can be used to power a laptop off the 400hz 3phase
: electrical power available in larger planes?

: well i suppose you first rectify the 400 Hz into DC
: using diodes that will withstand the currents involved
: (between 5 and 10 amps maximum, I should reckon)
: then you reduce whatever DC voltage results to some 12-15 volts
: then you feed this into the car inverter
: don't forget to include some inductances (=chokes)
: and ceramic C's to reduce HF-disturbance

: KA



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